Terrestrial nematodes from the Maritime Antarctic

Milka Elshishka; Aleksandar Mladenov; Stela Lazarova; Vlada Peneva

doi:10.3897/BDJ.11.e102057

. 2023 Sep 14;11:e102057. doi: 10.3897/BDJ.11.e102057

Terrestrial nematodes from the Maritime Antarctic

Milka Elshishka ^1,^✉, Aleksandar Mladenov ¹, Stela Lazarova ¹, Vlada Peneva ¹

PMCID: PMC10552655 PMID: 37809281

Abstract

Background

Soil nematodes are one of the most important terrestrial faunal groups in Antarctica, as they are a major component of soil micro-food webs. Despite their crucial role in soil processes, knowledge of their species diversity and distribution is still incomplete. Taxonomic studies of Antarctic nematodes are fragmented, which prevents assessment of the degree of endemicity and distribution of the species, as well as other aspects of biogeography.

New information

The present study is focused on the nematode fauna of one of the three Antarctic sub-regions, the Maritime Antarctic and summarises all findings published up to April 2023. A species list that includes 44 species, belonging to 21 genera, 16 families and eight orders is provided. A review of the literature on terrestrial nematodes inhabiting the Maritime Antarctic showed that the sites are unevenly studied. Three islands (Signy, King George and Livingston Islands) revealed highest species richness, probably due to the highest rates of research effort. Most species and four genera (Antarctenchus, Pararhyssocolpus, Amblydorylaimus and Enchodeloides) are endemic, proving that nematode fauna of the Maritime Antarctic is autochthonous and unique. Several groups of islands/sites have been revealed, based on their nematode fauna. The study showed that species with a limited distribution prevailed, while only two species (Plectusantarcticus and Coomansusgerlachei) have been found in more than 50% of the sites. Based on the literature data, details on species localities, microhabitat distribution, plant associations and availability of DNA sequences are provided.

Keywords: endemics, distribution, DNA sequences, species

Introduction

Soil nematodes are one of the most important groups of the terrestrial fauna in Antarctica (Maslen and Convey 2006) as they are abundant, taxonomically and functionally diverse and occupy a central position in the soil micro-food webs (Adams et al. 2014) and may have an impact on nutrient cycling and carbon dioxide emission, when soils thaw for a longer period of the year under climate change (van den Hoogen et al. 2019). In the challenging environmental conditions of the Antarctic, their distribution is limited to ice-free areas, where they have evolved throughout millions of years of climatic fluctuations in refugia (Ebach et al. 2008, Convey et al. 2020, Stevens and Mackintosh 2023). The glaciations, long-term isolation, harsh climate and the patchy distribution of ice-free areas (present today where at least partially ice-free throughout repeated glacial maxima (Newman et al. 2009)) are the main factors affecting the Antarctic nematode fauna origin/genesis (i.e. the formation of fauna under the influence of multiple factors - historical, geographic and ecological) (Andrássy 1998, Convey and Peck 2019). In order to survive in the extreme environments, nematodes have developed exceptional cryptobiotic adaptations to manage freezing and desiccation stress (e.g. Pickup (1988), Wharton (1995), Treonis and Wall (2005), Kagoshima et al. (2019)).

Knowledge of the impact of climate change on nematode communities from extreme habitats and how they respond to these changes is insufficient (Freckman and Virginia 1997, Nielsen et al. 2011a). One of the main problems in predicting the effects of climate change in Antarctica is the limited knowledge on the diversity of terrestrial fauna, especially nematodes and the lack of comprehensive long-term studies (Gantait 2014). Data on species distribution and biogeography are not enough and the taxonomic information still remains confused or scarce (Andrássy 1998, Maslen and Convey 2006, Adams et al. 2014, Kagoshima et al. 2019). Nematodes possess high indicator potential for assessing various environmental changes in the soil environment because they are abundant, ubiquitous, utilise diverse trophic and live strategies and, thus, occupy key positions in soil micro-food webs (Neher 2001, Ferris et al. 2001, Neher 2010, Chauvin et al. 2020, Taylor et al. 2020, Ara Khanum et al. 2022, Du Preez et al. 2022). This highlights the need for research on the fauna of nematodes and their communities in extreme environments in view of the already occurring global change.

Antarctica represents three distinct climatic regions: the Sub-Antarctic, Maritime and Continental Antarctic (Holdgate 1977), with the Sub-Antarctic being the most favourable (mean air temperatures of most islands are low, but positive during the whole year), with the Continental Antarctic having the harshest conditions (the average monthly temperatures remain below freezing) (Convey 2017). The Continental Antarctic covers the territories of the continent, the Balleny Islands and the eastern side of the Antarctic Peninsula (Convey 2017). The Sub-Antarctic is the boundary zone that lies north of 56°S (Chown and Brooks 2019). The flora and fauna in this region are rather typical of temperate latitudes. In this paper, we focused on terrestrial nematodes from the Maritime Antarctic. This is a region with a strong influence of the Southern Ocean; it includes the western coast of the Antarctic Peninsula to ca. 72°S, the South Shetland, South Orkney and South Sandwich Islands and the isolated Bouvetøya and Peter I Øya (Convey 2006, Convey 2017). The Maritime Antarctic is characterised by more favourable conditions compared with the Continental Antarctic: mean air temperatures are positive for 1–4 months of the year (Convey 2017), the vegetation is predominantly cryptogamic (algae, mosses, liverworts, lichens); higher plants are represented by two species, Deschampsiaantarctica Desv. (Poaceae) and Colobanthusquitensis Bartl. (Caryophyllaceae) (Greene 1970, Longton 1979, Smith 1984).

Studies on nematodes in the Maritime Antarctic started at the beginning of the 20^th century, with the contribution of the Romanian biologist Emil Racoviţă during the first scientific Antarctic expedition in winter (Andrássy 1998). This resulted in a description of the first Antarctic nematode species, Mononchusgerlachei (= Coomansusgerlachei (de Man 1904) Jairajpuri and Khan 1977), followed by three other species, Plectusantarcticus de Man 1904, P.belgicae de Man 1904 and Dorylaimus sp. Following these first data, targeted investigations on the terrestrial nematode fauna from this part of Antarctica started from the early 70s of the 20^th century (Spaull 1972, Spaull 1973a, Spaull 1973b, Spaull 1973c, Loof 1975, Maslen 1979a, Maslen 1979b, Caldwell 1981, Maslen 1981, Spaull 1981, Pickup 1988, Shishida and Ohyama 1989, Tsalolikhin 1989, Pickup 1990, Janiec 1996, Peneva et al. 1996, Andrássy 1998, Peneva and Chipev 1999, Convey et al. 2000, Nedelchev and Peneva 2000, Peneva et al. 2002, Convey and Wynn-Williams 2002, Holovachov and Bostrom 2006, Maslen and Convey 2006, Nedelchev and Peneva 2007, Kito 2009, Peneva et al. 2009, Nielsen et al. 2011b, Velasco-Castrillón and Stevens 2014, Velasco-Castrillón et al. 2014a, Russell et al. 2014, Elshishka et al. 2015a, Elshishka et al. 2015b, Elshishka et al. 2017, Kagoshima et al. 2019, Newsham et al. 2020). Antarctic nematodes have been studied mainly in easy to access areas near to the research bases/stations; therefore, there are still many remote locations never sampled for nematodes which raise questions on how widespread the species are (Adams et al. 2014, Convey et al. 2020).

According to Andrássy (1998), numerous studies have reported species as new records with no morphological description making it impossible to confirm identifications, especially when the collected material is no longer available for subsequent examination. Further, this has an impact on the potential to assess fauna endemicity, which is critical for examining Antarctic biogeography within a global context (Andrássy 1998). There are numerous cases of misclassification and underestimation of the diversity for most microfaunal groups in Antarctica, likely due to poor taxonomic resolution caused by insufficient sampling and their difficult identification (Adams et al. 2006, Iakovenko et al. 2015, Carapelli et al. 2017, Short et al. 2022, Collins et al. 2023), as well as the low degree of the development and application of molecular taxonomy.

In recent years, molecular studies have become more important in these marginal habitats, as a powerful toolkit to complement the traditional taxonomy, species identification and descriptions and to assess biodiversity and biogeography (Courtright et al. 2000, Velasco-Castrillón et al. 2014b, Elshishka et al. 2015b, Elshishka et al. 2017, Czechowski et al. 2017, Velasco-Castrillón et al. 2018, Kagoshima et al. 2019).

The integrative approach (combining morphological and molecular data) is an effective way to understand the scale of endemism, evolution and distribution of the Antarctic nematode fauna. However, the main problem of not linking molecular data with morphology still remains for the vast majority of Antarctic nematode species.

The present paper aims to summarise all records of nematode species occurrence in the Maritime Antarctic between the years of 1904 and April 2023 as a basis for further studies and to present a snapshot of nematode species diversity in this part of the Antarctic.

Materials and methods

The nematode species list has been composed, based on literature data and refers to the Maritime Antarctic. This list includes all species recovered in the Maritime Antarctic, as well as the islands and sites from where each species was reported, along with data on microhabitats and plant associations, accession numbers of published sequences in GenBank also included, if available. The type of microhabitat is reported as in the original paper, the scientific names of the plants being adapted according to the current systematics (Ochyra 1998). Geographical coordinates are presented additionally for each site if missing in the original paper. For the literature search, online bibliography search engine Google Scholar and the academic databases Scopus, Web of Science and CABI were used with search keywords “terrestrial nematode species*” and “Maritime Antarctic*”. We focused on studies reporting nematode species (see Holovachov (2014a)) from the Maritime Antarctic and omitted those that provide data only at the generic or family level.

Several papers recording multiple unidentified taxa at generic level (Maslen and Convey 2006, Nielsen et al. 2011b) probably contain many undescribed nematode species from those regions suggesting that the nematode diversity there might be underestimated to a great extent. Overall, nematodes from 37 sites (34 islands and three localities on the Antarctic Peninsula) are included in the review. The taxonomic position of the Antarctic species was presented according to the current nematode nomenclature. Classification follows Andrássy (2005), Andrássy (2007) and Andrássy (2009); only for order Plectida classification follows Holovachov (2014b). The analyses are based on species presence/absence data and Wizard > Matrix display function in PRIMER v.7.0 software (Clarke and Gorley 2015). The Matrix display wizard performs a sequence of sample and species resemblance calculations and clustering and seriation steps resulting in a shade plot which visualises the species presence/absence data and sites similarity.

Checklists

Checklist of terrestrial nematodes from the Maritime Antarctic

Dorylaimida

DB2E6DDD-5A83-5FAD-AA05-491530706589

Nordiidae

02036AD4-B115-5ACB-9D3A-C365D4FFFBE3

Enchodeloides signyensis

(Loof, 1975) Elshishka, Lazarova, Radoslavov, Hristov, Peneva, 2017

F37166B3-37C5-55AA-A12F-64A130AA896F

Enchodelus signyensis Loof, 1975

6C015E2C-BEF0-56CA-AF5D-8AE0D3404203

Pararhyssocolpus paradoxus

(Loof, 1975) Elshishka, Lazarova, Radoslavov, Hristov, Peneva, 2015

D9585A55-9B26-58B4-9516-DDC1BC9EB469

Eudorylaimus paradoxus Loof, 1975|Rhyssocolpus paradoxus (Loof, 1975) Andrássy, 1986

Dorylaimidae

671787FE-3946-5420-9619-FACA9D2FA213

Calcaridorylaimus signatus

(Loof, 1975) Andrássy, 1981

F5A9037F-584C-56F6-A44A-63714ACBC6D2

Mesodorylaimus signatus Loof, 1975

Mesodorylaimus antarcticus

Nedelchev and Peneva, 2000

EE444A29-4179-5887-B2A1-F41ADCCD81D6

Mesodorylaimus chipevi

Nedelchev and Peneva, 2000

9CD6CDD3-2EF8-5BAE-9D2A-2BCBC01ADE36

Mesodorylaimus imperator

Loof, 1975

9515D5C8-859D-5A66-A87E-9B42936469F3

Mesodorylaimus masleni

Nedelchev and Peneva, 2000

2A2130FE-3C7C-5B1D-9ADE-2B200FCE8D50

Aporcelaimidae

75CC4343-89B8-5900-94FC-936112411653

Amblydorylaimus isokaryon

(Loof, 1975) Andrássy, 1998

B044B3FC-B769-5B49-BA3E-B9BC91BE6581

Eudorylaimus isokaryon Loof, 1975

Aphelenchida

28744625-5C08-5291-98C0-3794406ED313

Aphelenchoididae

01714A28-F5E0-5D6B-B774-10899E47322D

Aphelenchoides haguei

Maslen, 1979

D4AC79D2-B450-5D13-9DCB-9E7FA2223288

Aphelenchoides vaughani

Maslen, 1979

A1301FE0-4F0B-5836-89C5-9246F2546124

Laimaphelenchus helicosoma

(Maslen, 1979) Peneva and Chipev, 1999

EFACFF62-976B-52D8-9526-5BA5A58C10E2

Aphelenchoides helicosoma Maslen, 1979

Alaimida

ADEC0201-921A-524A-B652-7B828938C15C

Amphidelidae

CBF633E8-7E83-5A54-A021-9C64861B55ED

Paramphidelus antarcticus

Tsalolikhin, 1989

D52EDC6A-5219-5C6E-A1F5-5F16A09027F6

Monhysterida

6748B1A9-7801-5159-8BB2-F159B2314D3E

Monhysteridae

7F94800F-CCCC-5B15-A41F-FBDDAE8C6CF3

Eumonhystera filiformis

(Bastian, 1865) Andrássy, 1981

87224B84-E25A-58B9-8B24-D9603402ED4E

Eumonhystera vulgaris

(de Man, 1880) Andrássy, 1981

33E17069-31EC-5865-A580-6DC42A82B918

Geomonhystera villosa

(Bütschli, 1873) Andrássy, 1981

6766505C-8E58-5AA4-BA98-A18390B2F1C0

Plectida

195B637E-A81D-5EC0-9837-4C8317666230

Bütschli, 1873

E97AA054-492C-5A21-B20B-198B5E58EB7B

Ceratoplectus armatus (Bütschli, 1873) Andrássy, 1984

Tylenchida

266FDC27-9624-596A-AD7A-24842C567356

Psilenchidae

A315F1BF-3304-582D-BB2C-CC87EF8EFC52

Antarctenchus hooperi

Spaull, 1972

8412463F-2F6C-5DB8-AF9A-7E4457E73FC2

Anguinidae

8DA64EBF-3D67-5C57-A8D9-9D104D5B8277

Ditylenchus parcevivens

Andrássy, 1998

E2215FCD-DAF8-5AB4-819E-30C2BA885C08

Rhabditida

51F7A518-984C-5256-93F6-F883548EFB18

Teratocephalidae

CDEA95B0-7F13-5883-9856-2C609C4E06F1

Teratocephalus tilbrooki

Rhabditis marina -group

410838AE-0F98-5B3C-AE3E-0CCB5F4D407A

Peloderidae

8C42EF21-19F7-5F43-A2E3-1A7D323A102B

Pelodera teres -group

F43B566C-DE04-54B9-881E-D65B10FA9A59

Pelodera strongyloides -group

C5A2BEFB-7A41-50C1-9050-C7E4AC3EA8F9

Pelodera parateres -group

D1D7791E-0B8D-5994-A75E-6FF0B8A08B8F

Mononchida

417FEFF6-89BD-5372-82DA-295F4AF64FC8

Mononchidae

CCA60FEF-1D5F-5DB5-A53E-25427B4590F4

Coomansus gerlachei

(de Man, 1904) Jairajpuri and Khan, 1977

4DDB6E9C-AEB1-54D8-95B5-28D16F93D36D

Mononchus gerlachei de Man, 1904|Clarkusgerlachei (de Man, 1904) Jairajpuri, 1970

Analysis

Results

To date, 44 species of terrestrial nematodes, belonging to 21 genera, 16 families and eight orders have been recorded in the Maritime Antarctic (Table 1, Fig. 1). Nematodes have been reported from 34 islands and three sites on the Antarctic Peninsula (Fig. 2). Several groups of islands/sites have been revealed, based on their nematode fauna. Those groups form a gradient from north (the group of Livingston, King George and Signy Islands) to south (the group of Adelaide, Charcot, Alexander, Leonie and Alamode Islands).

Table 1.

Distribution of terrestrial nematodes in the Maritime Antarctic.

* Taxonomic paper; ** Paper with molecular data; ***Paper with molecular and morphologica data

Terrestrial reference sites (SIRS) at Signy Island for long-term monitoring of the various biotic and abiotic components of Antarctic moss-peat communities (for full descriptions, see Tilbrook (1973)). These sites no longer exist and no studies have been done since the late 1980s.

SIRS 1 (Polytrichastrumalpinum (Hedwig), Chorisodontiumaciphyllum (Hook. f. & Wilson) Broth. (60°43.5'S, 45°35.6'W))

SIRS 2 (Sanioniauncinata (Hedw.), Warnstorfiasarmentosa (Wahlenb.), Warnstorfialaculosa (Müll. Hal.), Cephaloziellavarians (Gottsche) Steph. (60°43.7'S, 45°36'W))

¹ Geographical coordinates according to original paper. ² Geographical coordinates additionally added.

Nematode species	Locality / Coordinates	Microhabitat and plant species	DNA / Accesion number in GenBank	Reference
Enchodeloides signyensis	Signy Island (type locality) ^1,260°43’S, 45°38’W	Syntrichiafilaris (Müll. Hal.) (type habitat); D.antarctica; C.quitensis		Loof (1975) *
				Maslen (1979b)
		SIRS 1; SIRS 2		Caldwell (1981)
		SIRS 1; SIRS 2		Maslen (1981)
	Alamode Island ^1,268°43'S, 67°32'W	S.uncinata		Loof (1975)*
				Maslen (1979b)
		Moss		Maslen and Convey (2006)
	Alexander Island ²71°0′0″S, 70°0′0″W	Moss, lichen, soil, microbial mat		Maslen and Convey (2006)
	Alexander Island¹71°52’40’’S, 68°15’57’’W			Convey and Wynn-Williams (2002)
	Blaiklock Island ^1,267°33’S, 67°00’W	P.alpinum, Pohlianutans (Hedw.)		Loof (1975) *
	Blaiklock Island ^1,267°33’S, 67°00’W			Maslen (1979b)
	Coronation Island ^1,260°38’S, 45°35’W	D.antarctica		Loof (1975)*
	Coronation Island ^1,260°38’S, 45°35’W			Maslen (1979b)
	Charcot Island ^1,269°45'S, 75°15'W	Soil, moss clumps, algae, various lichens		Convey et al. (2000)
	Charcot Island ^1,269°45'S, 75°15'W	Moss, lichen, soil		Maslen and Convey (2006)
	Dream Island ²64°44′0″S, 64°14′0″W	Moss mats with green algae		Shishida and Ohyama (1989)*
	Elephant Island ^1,261°10’S, 55°14’W	D.antarctica; Polytrichum sp.		Loof (1975)*
	Elephant Island ^1,261°10’S, 55°14’W			Maslen (1979b)
	Galindez Island ^1,265°15'S, 64°15'W	D.antarctica		Loof (1975)*
	Galindez Island ^1,265°15'S, 64°15'W			Maslen (1979b)
	King George Island ¹62°09‘32“S, 58°27‘58“W	D.antarctica, C.quitensis, Sanionia sp., S.filaris, Syntrichiamagellanica (Mont.)		Russell et al. (2014)
	King George Island ²62°2′S, 58°21′W	Moist brown soil without vegetation, surrounded by moss	18S rDNA KY881720.1 28S rDNA KY881719.1	Elshishka et al. (2017)***
	Livingston Island ²62°36′S, 60°30′W	D.antarctica; D.antarctica+S.uncinata; D.antarctica+S.uncinata+C.quitensis; P.alpinum; S.uncinata; Bryum sp.; Usnea sp.+P.alpinum; Cladonia sp.+S.uncinata+P.alpinum; Polytrichumjuniperinum Hedw.+S.uncinata; S.uncinata+Bartramiapatens Brid.		Peneva et al. (2002)*
				Elshishka et al. (2015a)
		Moss; Soil under moss crust; Soil		Elshishka et al. (2017)*
Eudorylaimusconiceps	Signy Island (type locality) ^1,260°43’S, 45°38’W	S.filaris (type habitat); Andreaeagainii Card.; C.quitensis; W.laculosa and W.sarmentosa		Loof (1975)*
		SIRS 1		Maslen (1979b)
		SIRS 2		Maslen (1981)
		Andreaea sp.		Pickup (1988)
				Wharton and Block (1993)
	Alexander Island ²71°0′0″S, 70°0′0″W	Moss, lichen, soil, microbial mat		Maslen and Convey (2006)
	Ardley Island ¹62°12‘38“S, 58°56‘40“W			Russell et al. (2014)
	Charcot Island ^1,269°45'S, 75°15'W	Soil, moss clumps, algae, various lichens		Convey et al. (2000)
	Charcot Island ^1,269°45'S, 75°15'W	Moss, lichen, soil		Maslen and Convey (2006)
	Coronation Island ^1,260°38’S, 45°35’W	D.antarctica		Loof (1975)*
	Coronation Island ^1,260°38’S, 45°35’W			Maslen (1979b)
	Elephant Island ^1,261°10’S, 55°14’W	D.antarctica		Loof (1975)*
	Elephant Island ^1,261°10’S, 55°14’W			Maslen (1979b)
	Emperor Island ^1,267°52'S, 68°43'W	S.uncinata and Bryumpseudotriquetrum (Hedw.)		Loof (1975)*
	Emperor Island ^1,267°52'S, 68°43'W			Maslen (1979b)
	Guebriant Island ²67°48′S, 68°25′W			Maslen (1979b)
	Halfmoon Island ¹62°35‘45“S, 59°54‘06“W			Russell et al. (2014)
	King George Island ²62°2′S, 58°21′W	Mosses		Kito (2009)
	King George Island ¹62°11‘48“S, 58°59‘28“W; 62°11‘50“S, 58°56‘33“W; 62°11‘53“S, 58°56‘47“W			Russell et al. (2014)
	Leonie Island ²67°36′S, 68°21′W	Mixture of soil, moss, lichen, liverworts, algae and cyanobacteria	18S rDNA LC457670.1 LC457669.1 LC457668.1 LC457667.1 LC457666.1 LC457665.1 LC457664.1 LC457663.1 LC457662.1 LC457647.1 LC457646.1 LC457645.1	Kagoshima et al. (2019)**
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
E.pseudocarteri	Signy Island (type locality) ¹60°43’S, 45°38’W	A.gainii (type habitat); W.laculosa and W.sarmentosa; D.antarctica		Loof (1975)*
				Maslen (1979b)
		SIRS 1; SIRS 2		Maslen (1981)
		Andreaea sp.		Pickup (1988)
				Wharton and Block (1993)
	Adelaide Island ²67°15′S, 68°30′W	Moss, lichen		Maslen and Convey (2006)
	Alexander Island ²71°0′0″S, 70°0′0″W	Moss, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Ardley Island ¹62°12‘38“S, 58°56‘40“W			Russell et al. (2014)
	Charcot Island ^1,269°45'S, 75°15'W	Moss, lichen, soil		Maslen and Convey (2006)
	Coronation Island ^1,260°38’S, 45°35’W	D.antarctica		Loof (1975)*
	Coronation Island ^1,260°38’S, 45°35’W			Maslen (1979b)
	Elephant Island ^1,261°10’S, 55°14’W	Polytrichum sp.		Loof (1975)*
	Elephant Island ^1,261°10’S, 55°14’W			Maslen (1979b)
	King George Island ²62°2′S, 58°21′W	Puddle		Tsalolikhin (1989)*
	King George Island ¹62°09‘32“S, 58°27‘58“W; 62°11‘48“S, 58°59‘28“W; 62°11‘50“S, 58°56‘33“W			Russell et al. (2014)
	Livingston Island ¹62°39‘14“S, 60°36‘39“W			Russell et al. (2014)
E.spaulli	Alamode Island (type locality) ^1,268°43'S, 67°32'W	Soil around S.uncinata (type habitat)		Loof (1975)*
		Moss, lichen, soil, microbial mat		Maslen and Convey (2006)
				Maslen (1979b)
	Adelaide Island ²67°15′S, 68°30′W	Moss, lichen		Maslen and Convey (2006)
	Alexander Island ²71°0′0″S, 70°0′0″W	Moss, lichen, soil, microbial mat
	Anchorage Island ²67°36′14.01″S, 68°12′32.78″W	Moss, grass, lichen, soil, microbial mat, freshwater
	Blaiklock Island ^1,267°33’S, 67°00’W	P.alpinum, Pohlianutans		Loof (1975)*
	Blaiklock Island ^1,267°33’S, 67°00’W			Maslen (1979b)
	Charcot Island ^1,269°45'S, 075°15'W	Soil, moss clumps, algae, various lichens		Convey et al. (2000)
	Charcot Island ^1,269°45'S, 075°15'W	Moss, lichen, soil		Maslen and Convey (2006)
	Coronation Island ^1,260°38'S, 45°35'W	D.antarctica		Loof (1975)*
	Coronation Island ^1,260°38'S, 45°35'W			Maslen (1979b)
	Deception Island ²62°58′37″S, 60°39′0″W			Maslen (1979b)
	Elephant Island ^1,261°10’S, 55°14’W	D.antarctica; Polytrichum sp.		Loof (1975)*
	Elephant Island ^1,261°10’S, 55°14’W			Maslen (1979b)
	Leonie Island ²67°36′S, 68°21′W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Limpet Island ^1,267°38'S, 68°19'W	S.uncinata		Loof (1975)*
	Limpet Island ^1,267°38'S, 68°19'W			Maslen (1979b)
	Pourquoi pas Island ²67°41S, 67°28′W			Maslen (1979b)
	Signy Island ^1,260°43’S, 45°38’W	S.filaris B . pseudotriquetrum; D.antarctica; W.laculosa and W.sarmentosa		Loof (1975)*
				Wharton and Block (1993)
		Andreaea sp.		Pickup (1988)
				Maslen (1979b)
		SIRS 2		Maslen (1981)
E.verrucosus	Elephant Island (type locality) ^1,261°10’S, 55°14’W	D.antarctica (type habitat)		Loof (1975)*
	Elephant Island (type locality) ^1,261°10’S, 55°14’W			Maslen (1979b)
	Adelaide Island ²67°15′S, 68°30′W	Moss, lichen, soil, microbial mat		Maslen and Convey (2006)
	Signy Island ¹60°43’S, 45°38’W			Maslen (1979b)
		SIRS 1; SIRS 2		Maslen (1981)
				Wharton and Block (1993)
Eudorylaimuscf.carteri	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
Pararhyssocolpusparadoxus	Signy Island (type locality) ¹60°43’S, 45°38’W	A.gainii (type habitat); S.filaris		Loof (1975)*
				Maslen (1979b)
		SIRS 1; SIRS 2		Maslen (1981)
	Adelaide Island ²67°15′S, 68°30′W	Moss, lichen, soil, microbial mat		Maslen and Convey (2006)
	Adelaide Island ¹67°34.429'S, 68°07.284'W	C.varians and S. uncinata		Newsham et al. (2020)
	Anchorage Island ²67°36′14.01″S, 68°12′32.78″W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Blaiklock Island ^1,267°33’S, 67°00’W			Maslen (1979b)
	Coronation Island ^1,260°38'S, 45°35'W	D.antarctica		Loof (1975)*
	Coronation Island ^1,260°38'S, 45°35'W			Maslen (1979b)
	Elephant Island ^1,261°10’S, 55°14’W	S.uncinata		Loof (1975)*
	Elephant Island ^1,261°10’S, 55°14’W			Maslen (1979b)
	Galindez Island ^{1, 2}65°15'S, 64°15'W	D.antarctica		Loof (1975)*
	Galindez Island ^{1, 2}65°15'S, 64°15'W			Maslen (1979b)
	Guebriant Island ²67°48′S, 68°25′W			Maslen (1979b)
	Intercurrence Island ^1,263°55'S, 61°24'W	Brachythecium sp.		Loof (1975)*
	Intercurrence Island ^1,263°55'S, 61°24'W			Maslen (1979b)
	King George Island ²62°2′S, 58°21′W			Kito (2009)
	King George Island ²62°2′S, 58°21′W	Soil	18S rDNA KM092521.1 28S rDNA KM092522.1	Elshishka et al. (2015b)***
	King George Island ¹62°09‘32“S, 58°27‘58“W; 62°11‘48“S, 58°59‘28“W; 62°11‘50“S, 58°56‘33“W; 62°11‘53“S, 58°56‘47“W			Russell et al. (2014)
	Leonie Island ²67°36′S, 68°21′W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Limpet Island ^1,267°38'S, 68°19'W	S.uncinata		Loof (1975)*
	Limpet Island ^1,267°38'S, 68°19'W			Maslen (1979b)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
	Livingston Island ²62°36′S, 60°30′W	Sanionia sp.; C.quitensis, D.antarctica, moss; D.antarctica, C.quitensis; D.antarctica, moss		Elshishka et al. (2015b)*
	Nelson Island ²62°18′S, 59°3'W	Moss		Elshishka et al. (2015b)*
Calcaridorylaimussignatus	Signy Island (type locality) ¹60°43’S, 45°38’W	S.filaris (type habitat); B.pseudotriquetrum; C.quitensis; D.antarctica; Prasiolacrispa (Lightfoot)		Loof (1975)*
				Maslen (1979b)
		SIRS1		Caldwell (1981)
		SIRS 1; SIRS 2		Maslen (1981)
		Soil, moss, lichen, liverworts, algae and cyanobacteria	18S rDNA LC457654.1 LC457653.1 LC457652.1 LC457651.1 LC457650.1 LC457649.1 LC457648.1	Kagoshima et al. (2019)**
	Alamode Island ²68°43'S, 67°32'W	Moss, lichen, soil		Maslen and Convey (2006)
	Alexander Island ²71°0′0″S, 70°0′0″W	Moss, lichen, soil, microbial mat
	Anchorage Island ²67°36′14.01″S, 68°12′32.78″W	Moss, grass, lichen, soil, microbial mat, freshwater
	Anvers Island, Biscoe Point ²64°49′6.85″S, 63°46′32.29″W	Soil around roots of D.antarctica		Shishida and Ohyama (1989)*
	Coronation Island ^1,260°38'S, 45°35'W	D.antarctica		Loof (1975)*
	Coronation Island ^1,260°38'S, 45°35'W			Maslen (1979b)
	Dream Island ²64°44′0″S, 64°14′0″W	Moss mats with green algae		Shishida and Ohyama (1989)*
	Galindez Island ^1,265°15'S, 64°15'W	D.antarctica		Loof (1975)*
	Galindez Island ^1,265°15'S, 64°15'W			Maslen (1979b)
	Leonie Island ²67°36′S, 68°21′W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
Mesodorylaimusantarcticus	Livingston Island (type locality) ¹62°39'22’’S, 60°21'13’’W	Sanionia sp. (type habitat); D.antarctica; D.antarctica-Polytrichum sp.; A small moss tuft Sanionia sp.; A mix grass-moss spot D.antarctica+Sanionia sp.		Nedelchev and Peneva (2000)*
	King George Island ¹62°09‘32“S, 58°27‘58“W; 62°11‘48“S, 58°59‘28“W; 62°11‘50“S, 58°56‘33“W			Russell et al. (2014)
	Neko Harbour, Antarctic Peninsula ¹64°50‘41“S, 62°31‘53“W			Russell et al. (2014)
M.chipevi	Livingston Island (type locality) ¹62°34'48’’S, 60°20'42’’W	D.antarctica on the top of flat rock near sea (type habitat); Shallow soil with cover of green algae amongst grass on a rock; Small tuft of D.antarctica; Polytrichum sp.+S.uncinata+D.antarctica; A mix grass-moss spot D.antarctica+Sanionia sp.; A large pure grass spot D.antarctica		Nedelchev and Peneva (2000)*
	Livingston Island ¹62°38'52’’S, 60°22'24’’W	S.georgico-uncinata Müll. Hal. + D.antarctica		Nedelchev and Peneva (2007)*
	King George Island ¹62°09‘32“S, 58°27‘58“W			Russell et al. (2014)
M.imperator	Emperor Island (type locality) ^1,267°52'S, 68°43'W	S.uncinata and B.pseudotriquetrum (type habitat)		Loof (1975)*
	Emperor Island (type locality) ^1,267°52'S, 68°43'W			Maslen (1979b)
	Adelaide Island ²67°15′S, 68°30′W	Moss, lichen, soil		Maslen and Convey (2006)
	Alamode Island ²68°43'S, 67°32'W	Moss
	Alexander Island ²71°0′0″S, 70°0′0″W	Moss, grass, lichen, soil, microbial mat, freshwater
	Anchorage Island ²67°36′14.01″S, 68°12′32.78″W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Charcot Island ^1,269°45'S, 075°15'W	Soil, moss clumps, algae, various lichens		Convey et al. (2000)
	Cone Island ^1,267°41'S, 69°10'W	S.uncinata		Loof (1975)*
	Cone Island ^1,267°41'S, 69°10'W			Maslen (1979b)
	Killinbeck Island ²67°34′S, 68°5′W	Moss, lichen, soil		Maslen and Convey (2006)
	Leonie Island ²67°36′S, 68°21′W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
M.masleni	Livingston Island (type locality) ¹62°39'46’’S, 60°23'29’’W	A large area of D.antarctica (type habitat); A mix grass-moss spot D.antarctica + Sanionia sp.		Nedelchev and Peneva (2000)*
Amblydorylaimusisokaryon	Elephant Island (type locality) ^1,261°10’S, 55°14’W	D.antarctica (type habitat); Polytrichum sp.		Loof (1975)*
	Elephant Island (type locality) ^1,261°10’S, 55°14’W			Maslen (1979b)
	Galindez Island ^1,265°15'S, 64°15'W	D.antarctica		Loof (1975)*
	Galindez Island ^1,265°15'S, 64°15'W			Maslen (1979b)
	Intercurrence Island ^1,263°55'S, 61°24'W	Brachythecium sp.		Loof (1975)*
	Intercurrence Island ^1,263°55'S, 61°24'W			Maslen (1979b)
	King George Island ²62°2′S, 58°21′W			Kito (2009)
	King George Island ²62°2′S, 58°21′W	Soil		Elshishka et al. (2015b)*
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
	Livingston Island ²62°36′S, 60°30′W	Grass spot (D.antarctica); a moss- grass (D.antarctica-Polytrichum sp.) community; S.georgico-uncinata and D.antarctica; C.quitensis and D.antarctica, moss; D.antarctica and C.quitensis		Elshishka et al. (2015b)*
	Nelson Island ²62°18′S, 59°3′W	Moss	18S rDNA KM092519.1 28S rDNA KM092520.1	Elshishka et al. (2015b)***
Aphelenchoideshaguei	Signy Island (type locality) ¹60°43’S, 45°38’W	SIRS 1 (type habitat); SIRS 2		Maslen (1979a)*
	Signy Island (type locality) ¹60°43’S, 45°38’W	SIRS 1; SIRS 2		Maslen (1981)
	Adelaide Island ²67°15′S, 68°30′W	Moss, lichen		Maslen and Convey (2006)
	Adelaide Island ¹67°34.429'S, 68°07.284'W	C.varians and S.uncinata		Newsham et al. (2020)
	Alamode Island ²68°43'S, 67°32'W	Moss		Maslen and Convey (2006)
	Alexander Island ²71°0′0″S, 70°0′0″W	Moss, lichen, soil, microbial mat
	Anchorage Island ²67°36′14.01″S, 68°12′32.78″W	Moss, grass, lichen, soil, microbial mat, freshwater
	Ardley Island ¹62°12‘38“S, 58°56‘40“W			Russell et al. (2014)
	Deception Island ¹62°58‘42“S, 60°33‘29“W			Russell et al. (2014)
	King George Island ¹62°09‘32“S, 58°27‘58“W; 62°11‘48“S, 58°59‘28“W; 62°11‘50“S, 58°56‘33“W; 62°11‘53“S, 58°56‘47“W			Russell et al. (2014)
	Leonie Island ²67°36′S, 68°21′W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Livingston Island ¹62°39‘14“S, 60°36‘39“W	Soil		Russell et al. (2014)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
A.vaughani	Signy Island (type locality) ¹60°43’S, 45°38’W	SIRS 1; SIRS 2		Maslen (1979a)*
	Signy Island (type locality) ¹60°43’S, 45°38’W	SIRS 1; SIRS 2		Maslen (1981)
	Alexander Island ²71°0′0″S, 70°0′0″W	Moss, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
Laimaphelenchushelicosoma	Signy Island (type locality) ¹60°43’S, 45°38’W	SIRS 1 (type habitat); SIRS 2		Maslen (1979a)*
	Signy Island (type locality) ¹60°43’S, 45°38’W	SIRS 1		Maslen (1981)
	Adelaide Island ²67°15′S, 68°30′W	Moss, lichen		Maslen and Convey (2006)
	Adelaide Island ¹67°34.429'S, 68°07.284'W	C.varians and S.uncinata		Newsham et al. (2020)
	Ardley Island ¹62°12‘38“S, 58°56‘40“W			Russell et al. (2014)
	King George Island ¹62°09‘32“S, 58°27‘58“W 62°11‘48“S, 58°59‘28“W 62°11‘50“S, 58°56‘33“W			Russell et al. (2014)
				Russell et al. (2014)
	Livingston Island, ¹62°38'S, 60°20'W	Primitive soil around roots of D.antarctica		Peneva and Chipev (1999)*
Paramphidelusantarcticus	King George Island (type locality) ²62°2′S, 58°21′W	Lichen (type habitat)		Tsalolikhin (1989)*
Eumonhysterafiliformis	King George Island ¹62°09’S, 58°29'W	Thaw ponds, with the bottom inhabited by W.sarmentosa		Janiec (1996)
Eumonhysterafiliformis	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
E.vulgaris	King George Island ¹62°09’S, 58°29'W	Puddle		Tsalolikhin (1989)*
	King George Island ¹62°09’S, 58°29'W	Moraine ponds, their shores are inhabited mainly by S.uncinata, W.sarmentosa and B.pseudotriquetrum; Moss banks of W.sarmentosa and W.laculosa; Thaw ponds, with the bottom inhabited by W.sarmentosa; Nearshore ponds, colonised by W.laculosa and W.sarmentosa		Janiec (1996)
	King George Island ¹62°09‘32“S, 58°27‘58“W; 62°11‘48“S, 58°59‘28“W; 62°11‘50“S, 58°56‘33“W; 62°11‘53“S, 58°56‘47“W			Russell et al. (2014)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
Geomonhysteravillosa	Coronation Island ^1,260°38'S, 45°35'W			Maslen (1979b)
	Ardley Island ¹62°12‘38“S, 58°56‘40“W			Russell et al. (2014)
	Elephant Islan ^1,261°10’S, 55°14’W			Maslen (1979b)
	Galindez Island ^1,265°15'S, 64°15'W
	Intercurrence Island ^1,263°55'S, 61°24'W
	King George Island ¹62°09’S, 58°29'W	W.sarmentosa and W.laculosa		Janiec (1996)
	King George Island ¹62°11‘48“S, 58°59‘28“W 62°11‘50“S, 58°56‘33“W 62°11‘53“S, 58°56‘47“W			Russell et al. (2014)
	Livingston Island ¹62°39‘14“S, 60°36‘39“W			Russell et al. (2014)
	Neko Harbour, Antarctic Peninsula ¹64°50‘41“S, 62°31‘53“W
	Signy Island ¹60°43’S, 45°38’W			Maslen (1979b)
		SIRS 1		Caldwell (1981)
		SIRS 1; SIRS 2		Maslen (1981)
		Mixture of soil, moss, lichen, liverworts, algae and cyanobacteria	18S rDNA LC457677.1 LC457676.1 LC457675.1 LC457674.1 LC457673.1 LC457672.1 LC457671.1	Kagoshima et al. (2019)
Plectusantarcticus	Danco Land coast, Beneden Head, Antarctic Peninsula (type locality) ²64°46'S, 62°42'W	Freshwater algae (type habitat)		de Man (1904)*
				Maslen (1979b)
		Moss from rock		Andrássy (1998)*
	Adelaide Island ¹67°34′S, 68°07′W	Moss, lichen, soil, microbial mat		Maslen and Convey (2006)
	Adelaide Island ¹67°34′S, 68°07′W	Cephaloziellavarians (Gottsche)	18S rDNA LC457559.1 LC457558.1 LC457557.1 LC457556.1 LC457555.1 LC457554.1	Kagoshima et al. (2019)**
	Adelaide Island ¹67°34.429'S, 68°07.284'W	C.varians and S.uncinata		Newsham et al. (2020)
	Alamode Island ²68°43'S, 67°32'W			Spaull (1973a)
				Maslen (1979b)
		Moss		Maslen and Convey (2006)
	Alexander Island, ¹71°52’40’’S, 68°15’57’’W			Convey and Wynn-Williams (2002)
	Alexander Island ²71°0′0″S, 70°0′0″W	Moss, lichen, soil, microbial mat		Maslen and Convey (2006)
	Anchorage Island ²67°36′14.01″S, 68°12′32.78″W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Avian Island ²67°46"S, 68°54"W			Spaull (1973a)
	Avian Island ²67°46"S, 68°54"W			Maslen (1979b)
	Blaiklock Island ^1,267°33’S, 67°00’W			Maslen (1979b)
	Charcot Island ^1,269°45'S, 075°15'W	Soil, moss clumps, algae, various lichens		Convey et al. (2000)
	Charcot Island ^1,269°45'S, 075°15'W	Moss, lichen, soil		Maslen and Convey (2006)
	Cone Island ^1,267°41'S, 69°10'W			Maslen (1979b)
	Coronation Island ^1,260°38'S, 45°35'W			Maslen (1979b)
	Deception Island ²62°58′37″S, 60°39′0″W	Moss from basalt debris		Andrássy (1998)*
	Deception Island ²62°58′37″S, 60°39′0″W			Maslen (1979b)
	Deception Island ¹62°58‘43“S, 60°33‘24“W	Only erratic patches of mosses, lichens and algae		Russell et al. (2014)
	Devil Island ¹63°47‘54“S, 57°17‘24“W	Soil substrates of the very sandy with embedded gravel		Russell et al. (2014)
	Elephant Island ^1,261°10’S, 55°14’W			Spaull (1973a)
				Maslen (1979b)
		S.uncinata		Andrássy (1998)*
	Emperor Island ²67°52'S, 68°43'W			Spaull (1973a)
	Emperor Island ²67°52'S, 68°43'W			Maslen (1979b)
	Galindez Island ^1,265°15'S, 64°15'W
	Guebriant Island ²67°48′S, 68°25′W
	Intercurrence Island ^1,263°55'S, 61°24'W			Spaull (1973a)
	Intercurrence Island ^1,263°55'S, 61°24'W			Maslen (1979b)
	Killingbeck Island ²67°34′S, 68°5′W	Moss, lichen, soil		Maslen and Convey (2006)
	King George Island ²62°2′S, 58°21′W	Soil around rhizosphere of grasses and under lichen		Tsalolikhin (1989)*
	King George Island ¹62°09’S, 58°29'W	Moraine ponds, their shores are inhabited mainly by S.uncinata, W.sarmentosa and B.pseudotriquetrum; Moss banks of W.sarmentosa and W.laculosa		Janiec (1996)
	King George Island ¹62°09‘32“S, 58°27‘58“W; 62°11‘48“S, 58°59‘28“W	Mosses, lichens, D.antarctica		Russell et al. (2014)
	Leonie Island ²67°36′S, 68°21′W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Limpet Island ^1,267°38'S, 68°19'W			Maslen (1979b)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
	Pourqoui pas Island ²67°41'S, 67°28′W			Maslen (1979b)
	Signy Island ¹60°43’S, 45°38’W			Spaull (1973a)
				Spaull (1973b)
				Spaull (1973c)
				Maslen (1979b)
		SIRS 1; SIRS 2		Maslen (1981)
		SIRS1; SIRS2		Caldwell (1981)
		Andreaea sp.		Pickup (1988)
				Wharton and Block (1993)
		Acrocladium sp.; D.antarctica		Andrássy (1998)*
Plectuscf.antarcticus	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
Plectuscf.antarcticus	Signy Island ²60°43’S, 45°36’W	Mixture of soil, moss, lichen, liverworts, algae and cyanobacteria	18S rDNA LC457687.1 LC457686.1	Kagoshima et al. (2019)
P.belgicae	Cap Beneden, Danco Land, Antarctic Peninsula (type locality) ²64°46''S, 62°42"W	Algae fresh water (type habitat)		de Man (1904)*
	Adelaide Island ¹67°34′S, 68°07′W	Moss, lichen, soil, microbial mat		Maslen and Convey (2006)
	Adelaide Island ¹67°34′S, 68°07′W	C.varians	18S rDNA LC457565.1 LC457564.1 LC457563.1 LC457562.1 LC457561.1 LC457560.1	Kagoshima et al. (2019)
	Adelaide Island ¹67°34.429'S, 68°07.284'W	C.varians and S.uncinata		Newsham et al. (2020)
	Anchorage Island ²67°36′14.01″S, 68°12′32.78″W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Charcot Island ^{1, 2}69°45'S, 075°15'W	Moss, lichen, soil		Maslen and Convey (2006)
	Elephant Island ^{1, 2}61°10’S, 55°14’W	P.juniperinum; S.uncinata		Andrássy (1998)*
	King George Island ²62°2′S, 58°21′W	B.pseudotriquetrum and Bartramiapatens	18S rDNA LC457638.1 LC457637.1 LC457636.1	Kagoshima et al. (2019)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
	Rhyolite Island, ²69°40′S, 68°35′W	Moss, grass		Maslen and Convey (2006)
	Signy Island ²60°43’S, 45°36’W	Acrocladium sp.; Usnea sp.; SIRS 2		Andrássy (1998)*
Plectuscf.belgicae	Ardley Island ¹62°12‘38“S, 58°56‘40“W			Russell et al. (2014)
	Deception Island ¹62°58‘43“S, 60°33‘24“W; 62°58‘42“S, 60°33‘29“W
	King George Island ¹62°09‘32“S, 58°27‘58“W; 62°11‘48“S, 58°59‘28“W; 62°11‘50“S, 58°56‘33“W; 62°11‘53“S, 58°56‘47“W
	Livingston Island ¹62°39‘14“S, 60°36‘39“W
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
	Petermann Island ¹65°10‘29“S, 64°08‘10“W			Russell et al. (2014)
P.insolens	Signy Island (type locality) ²60°43’S, 45°36’W	Thin soil on rock covered with Acrocladium sp. (type habitat); roots of D.antarctica		Andrássy (1998)*
	Ardley Island ¹62°12‘38“S, 58°56‘40“W	Soils, Sanionia sp., W.sarmentosa and Andreaearegularis Müll. Hal.		Russell et al. (2014)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
P.tolerans	Emperor Island (type locality) ²67°52’S, 68°43’W	S.uncinata (type habitat)		Andrássy (1998)*
	Alexander Island ²71°0′0″S, 70°0′0″W	Moss, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Anchorage Island ²67°36′14.01″S, 68°12′32.78″W	Moss, grass, lichen, soil, microbial mat, freshwater
	Charcot Island ^1,269°45'S, 075°15'W	Moss, lichen, soil
	King George Island ²62°2′S, 58°21′W			Kito (2009)
	Leonie Island ²67°36′S, 68°21′W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
	Rhyolite Island ²69°40′S, 68°35′W	Moss, grass		Maslen and Convey (2006)
Plectuscf.tolerans	Ardley Island ¹62°12‘38“S, 58°56‘40“W			Russell et al. (2014)
	King George Island ¹62°09‘32“S, 58°27‘58“W; 62°11‘48“S, 58°59‘28“W; 62°11‘50“S, 58°56‘33“W; 62°11‘53“S, 58°56‘47“W
	Livingston Island ¹62°39‘14“S, 60°36‘39“W
P.meridianus	Terra Firma Island (type locality) ²68°42′S, 67°32′W	Lichen (type habitat)		Andrássy (1998)*
	Emperor Island ²67°52’S, 68°43’W	A carpet of S.uncinata		Andrássy (1998)*
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
	Signy Island ²60°43’S, 45°36’W	Roots of D.antarctica		Andrássy (1998)*
Plectuscf.meridianus	Signy Island ²60°43’S, 45°36’W	Soil, moss, lichen, liverworts, algae and cyanobacteria	18S rDNA LC457691.1 LC457690.1 LC457689.1 LC457688.1	Kagoshima et al. (2019)
P.armatus	Ardley Island ¹62°12‘38“S, 58°56‘40“W			Russell et al. (2014)
	Coronation Island ²60°38'S, 45°35'W			Maslen (1979b)
	Elephant Island ²61°10’S, 55°14’W
	Galindez Island ²65°15'S, 64°15'W
	King George Island ¹62°11‘48“S, 58°59‘28“W			Russell et al. (2014)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
	Signy Island ¹60°43’S, 45°38’W	D.antarctica; C.quitensis; mosses		Spaull (1973b)
				Spaull (1973c)
				Maslen (1979b)
Antarctenchushooperi	Signy Island (type locality) ^1,260°43'S, 45°38'W	A.gainii (type habitat); Brachythecium sp., Calliergon sp., S.filaris, Grimmiaantarctici Card., Ch.aciphyllum, P.juniperinum and D.antarctica		Spaull (1972)*
		Sanionia sp.+ Calliergon sp.+ Calliergidium sp.; Polytrichum sp.; Bryum sp. + Syntrichia sp. + Andreaea sp.; D.antarctica		Spaull (1973a)
		A.gainii, S.filaris, Calliergon-Calliergidium		Spaull (1973b)
				Spaull (1973c)
				Maslen (1979b)
		SIRS 1; SIRS 2		Maslen (1981)
		S.uncinata		Caldwell (1981)
				Wharton and Block (1993)
	Coronation Island ^1,260°38'S, 45°35'W	D.antarctica		Spaull (1972)*
		D.antarctica		Spaull (1973a)
				Maslen (1979b)
Ditylenchusparcevivens	Signy Island (type locality) ²60°43’S, 45°38’W	Fine silt (type habitat)		Andrássy (1998)*
	King George Island ¹62°09‘32“S, 58°27‘58“W; 62°11‘48“S, 58°59‘28“W; 62°11‘50“S, 58°56‘33“W; 62°11‘53“S, 58°56‘47“W			Russell et al. (2014)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
Teratocephalustilbrooki	Signy Island (type locality) ^1,260°43’S, 45°38’W	SIRS 1 (type habitat); SIRS2		Maslen (1979a)*
		‘Swamp’ moss carpets		Maslen (1979b)
		SIRS 1; SIRS 2		Maslen (1981)
		Andreaea sp.		Pickup (1988)
				Wharton and Block (1993)
		Usnea sp.		Andrássy (1998)*
	Adelaide Island ²67°15′S, 68°30′W	Moss, lichen		Maslen and Convey (2006)
	Ardley Island ¹62°12‘38“S, 58°56‘40“W			Russell et al. (2014)
	Charcot Island ^{1, 2}69°45'S, 075°15'W	Moss, lichen, soil		Maslen and Convey (2006)
	Halfmoon Island ¹62°35‘45“S, 59°54‘06“W	Soil		Russell et al. (2014)
	King George Island ¹62°09‘32“S, 58°27‘58“W; 62°11‘48“S, 58°59‘28“W; 62°11‘50“S, 58°56‘33“W; 62°11‘53“S, 58°56‘47“W	Soil		Russell et al. (2014)
	Leonie Island ²67°36′S, 68°21′W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
T.pseudolirellus	Signy Island (type locality) ¹60°43’S, 45°38’W	S.filaris (type habitat)		Maslen (1979a)*
	Alexander Island ²71°0′0″S, 70°0′0″W	Moss, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Charcot Island ²69°45'S, 075°15'W	Moss, lichen, soil		Maslen and Convey (2006)
	King George Island ²62°2′S, 58°21′W			Kito (2009)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
T.rugosus	Signy Island (type locality) ²60°43’S, 45°38’W	SIRS 1; SIRS 2		Maslen (1979a)*
				Maslen (1979b)
		SIRS 1; SIRS 2		Maslen (1981)
	Ardley Island ¹62°12‘38“S, 58°56‘40“W			Russell et al. (2014)
	Deception Island ¹62°58‘42“S, 60°33‘29“W
	Devil Island ¹63°47‘54“S, 57°17‘24“W
	Halfmoon Island ¹62°35‘45“S, 59°54‘06“W
	King George Island ¹62°09‘32“S, 58°27‘58“W; 62°11‘48“S, 58°59‘28“W; 62°11‘53“S, 58°56‘47“W
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
Acrobeloidesarctowskii	King George Island (type locality) ¹58°29'30''W, 61°05'S	Soil around roots of D.antarctica (type habitat)		Holovachov and Bostrom (2006)*
	King George Island ¹62°09‘32“S, 58°27‘58“W			Russell et al. (2014)
	Deception Island ¹62°58‘43“S, 60°33‘24“W; 62°58‘42“S, 60°33‘29“W	Soil devoid of vegetation or with P.crispa		Russell et al. (2014)
Cervidelluscf.vexilliger	King George Island ¹62°09‘32“S, 58°27‘58“W			Russell et al. (2014)
Cuticulariafirmata	Signy Island (type locality) ²60°43’S, 45°36’W	Fine mud (type habitat); SIRS 2		Andrássy (1998)*
Rhabditiskrylovi	King George Island (type locality) ²62°2′S, 58°21′W	Flowing lake (type habitat)		Tsalolikhin (1989)*
Rhabditismarina-group	Deception Island ¹62°55‘43“S, 60°40‘48“W			Russell et al. (2014)
Peloderateres group	Deception Island ¹62°58‘43“S, 60°33‘24“W; 62°58‘42“S, 60°33‘29“W			Russell et al. (2014)
	Livingston Island ¹62°39‘14“S, 60°36‘39“W			Russell et al. (2014)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
	Neko Harbour, Antarctic Peninsula ¹64°50‘41“S, 62°31‘53“W			Russell et al. (2014)
	Paulet Island ¹63°34‘30“S, 55°46‘59“W	Ornithogenic soils		Russell et al. (2014)
Peloderastrongyloides group	Devil Island ¹63°47‘54“S, 57°17‘24“W			Russell et al. (2014)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
	Livingston Island ¹62°39‘14“S, 60°36‘39“W			Russell et al. (2014)
	Neko Harbour, Antarctic Peninsula ¹64°51‘45“S, 62°26‘47“W; 64°50‘41“S, 62°31‘53“W			Russell et al. (2014)
Peloderaparateres group	Deception Island ¹62°58‘42“S, 60°33‘29“W			Russell et al. (2014)
Peloderaparateres group	King George Island ¹62°09‘32“S, 58°27‘58“W			Russell et al. (2014)
Coomansusgerlachei	Danco Land coast, Beneden Head Antarctic Peninsula (type locality) ²64°46''S, 62°42"W	Algae fresh water (type habitat)		de Man (1904)*
				Maslen (1979b)
				Andrássy (1998)*
	Caleta Cierva, Antarctic Peninsula ¹64°10’S, 60°57’W	Soil around roots of D.antarctica		Chaves (1990)*
	Antarctic Peninsula			Jiménez Guirado et al. (1998)*
	Adelaide Island ¹67°34.429'S, 68°07.284'W	C.varians and S. uncinata		Newsham et al. (2020)
	Anchorage Island ²67°36′14.01″S, 68°12′32.78″W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Anvers Island, Biscoe Point ²64°49′6.85″S, 63°46′32.29″W	Soil around roots of D.antarctica		Shishida and Ohyama (1989)*
	Anvers Island, Old Palmer ²64°45′48″S, 64°5′12″W	Moss mats		Shishida and Ohyama (1989)*
	Avian Island ²67°46''S, 68°54"W	Sanionia sp., Bryum sp.		Spaull (1973a)
				Maslen (1979b)
		S.uncinata, B.pseudotriquetrum		Spaull (1981)
	Coronation Island ^1,260°38'S, 45°35'W	D.antarctica		Spaull (1973a)
	Coronation Island ^1,260°38'S, 45°35'W			Maslen (1979b)
	Charcot Island ^1,269°45'S, 75°15'W	Soil, moss clumps, algae, various lichens		Convey et al. (2000)
	Deception Island ²62°58′37″S, 60°39′0″W	Sanionia sp.; Polytrichum sp.		Spaull (1973a)
				Maslen (1979b)
		Melting snow moisten mosses in a shingle field		Andrássy (1998)*
	Dream Island ²64°44′0″S, 64°14′0″W	Moss mats with green algae		Shishida and Ohyama (1989)*
	Elephant Island ^1,261°10’S, 55°14’W	Brachythecium sp.; D.antarctica; Sanionia sp.		Spaull (1973a)
				Maslen (1979b)
		Soil bellow D.antarctica		Spaull (1981)
	Galindez Island ^1,265°15'S, 64°15'W	Brachythecium sp.; D.antarctica; Bryum sp.; Sanionia sp. + Pohlia sp.		Spaull (1973a)
				Maslen (1979b)
		Brachytheciumaustrosalebrosum (C. Muell.) Par.		Spaull (1981)
	Guebriant Island ²67°48′S, 68°25′W	Brachythecium sp., Bryum sp., Sanionia sp.		Spaull (1973a)
	Guebriant Island ²67°48′S, 68°25′W			Maslen (1979b)
	Intercurrence Island ^1,263°55'S, 61°24'W	Brachythecium sp., Bryum sp., Sanionia sp.		Spaull (1973a)
	Intercurrence Island ^1,263°55'S, 61°24'W			Maslen (1979b)
	Halfmoon Island ¹62°35‘45“S, 59°54‘06“W			Russell et al. (2014)
	King George Island ¹62°09’S, 58°29'W	Moraine ponds, their shores are inhabited mainly by S.uncinata, W.sarmentosa and B.pseudotriquetrum		Janiec (1996)
	Leonie Island ²67°36′S, 68°21′W	Moss, grass, lichen, soil, microbial mat, freshwater		Maslen and Convey (2006)
	Leonie Island ²67°36′S, 68°21′W	Mixture of soil, moss, lichen, liverworts, algae and cyanobacteria	18S rDNA LC457644.1 LC457643.1 LC457642.1 LC457641.1 LC457640.1 LC457639.1	Kagoshima et al. (2019)**
	Limpet Island ^1,267°38'S, 68°19'W	Brachythecium sp., Bryum sp., Sanionia sp.		Spaull (1973a)
	Limpet Island ^1,267°38'S, 68°19'W			Maslen (1979b)
	King George Island ²62°2′S, 58°21′W			Kito (2009)
	King George Island ¹62°09‘32“S, 58°27‘58“W; 62°11‘48“S, 58°59‘28“W; 62°11‘50“S, 58°56‘33“W; 62°11‘53“S, 58°56‘47“W			Russell et al. (2014)
	Litchfield Island ²64°46′S, 64°6′W	Decaying moss mats with blue-green algae		Shishida and Ohyama (1989)*
	Livingston Island ²62°36′S, 60°30′W	Soil under crisp of green algae; D.antarctica-S.uncinata; D.antarctica, P.alpinum		Peneva et al. (1996)*
	Livingston Island ¹62°39‘14“S, 60°36‘39“W			Russell et al. (2014)
	Livingston Island ²62°36′S, 60°30′W			Elshishka et al. (2015a)
	Nelson Island ²62°18′S, 59°3W	Moss	18S rDNA KM092523.1 28S rDNA KM092524.1	Elshishka et al. (2015b)**
	Signy Island ^1,260°43’S, 45°38’W	Sanionia sp.+ Calliergon sp.+ Calliergidium sp.; Polytrichum sp.; Bryum sp. + Syntrichia sp. +Andreaea sp.; D.antarctica		Spaull (1973a)
				Spaull (1973b)
				Spaull (1973c)
				Maslen (1979b)
		S.uncinata and W.sarmentosa		Caldwell (1981)
		SIRS 1; SIRS 2		Maslen (1981)
		P.crispa from melt stream		Spaull (1981)
		Sanionia sp.		Pickup (1988)
		P.crispa; S.uncinata		Pickup (1990)
		Calliergon sp.		Wharton and Block (1993)
		Mixture of soil, lichen, liverworts, algae and cyanobacteria	18S rDNA LC457661.1 LC457660.1 LC457659.1 LC457658.1 LC457657.1 LC457656.1 LC457655.1	Kagoshima et al. (2019)**

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Figure 1. — Terrestrial nematodes from the Maritime Antarctic - visual representation of the data matrix (shade plot): in the columns are the 37 sites and in the rows – 44 species. White and black spaces denote absence or presence of a particular species at a given site; sites and species are arranged according to the groups derived by the clustering analyses. Significant clusters were identified with SIMPROF test and visualised in red dashed lines and a range of coloured dots. Each colour represents a group of sites/islands with similar nematode fauna.

Figure 2. — Distribution of terrestrial nematodes in the Maritime Antarctic. In green are presented the sites with records of terrestrial nematodes.

The order Dorylaimida is the best represented order in this Antarctic Region with five families, six genera and 13 species. The order Mononchida is represented by only one family (one genus and species).

The families Aphelenchoididae, Cephalobidae, Monhysteridae, Plectidae, Qudsianematidae, Peloderidae and Rhabditidae have a cosmopolitan distribution and, in the Maritime Antarctic, they are represented by one to two genera and two to ten species. The family Plectidae is the most diverse (10 species). Seven families (Amphidelidae, Anguinidae, Aporcelaimidae, Mononchidae, Nordiidae, Pararhyssocolpidae and Psilenchidae) are represented by only one species each.

Almost all species and four genera (Antarctenchus, Pararhyssocolpus, Amblydorylaimus and Enchodeloides) are endemic. Four species generally known as cosmopolitan are reported in some ecological studies in the Maritime Antarctic: Eumonhysteravulgaris (de Man 1880) Andrássy (1981), E.filiformis (Bastian 1865) Andrássy (1981), Geomonhysteravillosa (Bütschli 1873) Andrássy (1981) and Plectusarmatus Bütschli 1873. Of these, a description and illustrations were provided only for E.vulgaris (Tsalolikhin 1989).

Most species (27) have limited distribution registered in up to five islands of the Maritime Antarctic. Cuticulariafirmata Andrássy 1998, Cervidelluscf.vexilliger, Rhabditiskrylovi Tsalolikhin 1989, a species of the Rhabditismarina-group, Mesodorylaimusmasleni Nedelchev and Peneva 2000, Eudorylaimuscf.carteri and Plectuscf.meridianus are recorded from one island only. Six species occurred in more than 30% of the sites (C.gerlachei, P.antarcticus, Pararhyssocolpusparadoxus (Loof 1975), Eudorylaimusspaulli Loof 1975, E.coniceps Loof 1975, Enchodeloidessignyensis (Loof 1975)) with C.gerlachei and P.antarcticus being the most widespread (reported from more than half of the sites) (Figs 3, 4, 5). There are no particular trends in the distribution of most common species (occurring in more than 22% of the sites, 1/4 of the species) related to longitude or latitude, only P.paradoxus and Mesodorylaimusimperator Loof 1975 have not been reported from the most southern sites, whereas G.villosa – from the most northern localities.

Figure 3. — Described species and their occurrences presented as percentages.

Figure 4. — Distribution of *P.antarcticus*, *C.gerlachei* and *Pararhyssocolpusparadoxus* in the Maritime Antarctic. In red are presented the sites with records of these species, in green are presented the sites with records of the other Antarctic terrestrial nematodes.

Figure 5. — Distribution of *Eudorylaimusspaulli*, *E.coniceps* and *Enchodeloidessignyensis* in the Maritime Antarctic. In red are presented the sites with records of these species, in green are presented the sites with records of the other Antarctic terrestrial nematodes.

In most of the literature sources, there are data on the microhabitats in which nematode species occurred. The nematodes have been recorded from various microhabitats: bare soil, microbial mats, moss, lichens and algae and soil around the two species of higher plants occurring in the Maritime Antarctic (Fig. 6).

Figure 6. — Some microhabitats in the Maritime Antarctic. A *Colobanthusquitensis* B *Deschampsiaantarctica* C Bare soil D *Syntrichia* sp. E *Bryum* sp. F *D.antarctica*, *C.quitensis*, mosses G *Sanionia* sp. H *Polytrichum* sp. J *Usnea* sp. Photographs by M. Elshishka (Livingston Island).

DNA data have been generated for 11 species, but sequences for only three of them (Amblydorylaimusisokaryon (Loof 1975), P.paradoxus and E.signyensis) are supported by full morphological descriptions as per the modern taxonomic standards (Elshishka et al. 2015b, Elshishka et al. 2017, Kagoshima et al. 2019).

The review of the literature related to terrestrial nematodes from the Maritime Antarctic showed that the different parts are unevenly studied and three islands, Livingston (31 species), King George (28 species) and Signy (25 species) exhibited the richest nematode fauna (Fig. 7). Signy Island is the best studied Antarctic island with 12 new species described. This is due to the intensive studies on the nematode fauna in the 1970s and 1980s undertaken by the British Antarctic Survey (Spaull 1973a, Spaull 1973b, Spaull 1973c, Loof 1975, Maslen 1979a, Maslen 1979b, Caldwell 1981, Maslen 1981, Pickup 1988, Pickup 1990 etc.).

Figure 7. — Bar chart visualising the described species (left axis) and literature sources (right axis) per each island/site.

Discussion

Our knowledge of the nematode species diversity in the Maritime Antarctic is still insufficient and fragmented. The different study efforts at the various sites do not allow gaining a clear picture of trends in the diversity and distribution of nematode species in the target Antarctic Region. Yet, the analysis provided on the basis of species presence/absence data revealed several groups of sites with similar nematode fauna forming a latitudinal gradient (Fig. 1). The high level of endemism at both the species and genus level is a characteristic feature of the nematode fauna of the region as was mentioned above. This high degree of endemism can be explained by the long-term isolation and the harsh conditions of the region (Convey et al. 2008, Nielsen et al. 2011a). It has been suggested that the Antarctic terrestrial fauna might have survived glaciation in ice-free areas and some species might be remnants of the fauna of the Gondwana super-continent (Andrássy 1998, Maslen and Convey 2006, Chown and Convey 2016, Convey et al. 2020).

The physical isolation and harsh environment of Antarctic terrestrial ecosystems is the major reason for the difficult colonisation by non-native biota (Convey and Peck 2019). In recent decades, human visits and activities in the Antarctic have provided ways (e.g. cargo, vehicles, scientific equipment, fresh food, clothing, people) to overcome these barriers (Lee and Chown 2009, Hughes et al. 2010, Chwedorzewska et al. 2013, Adams et al. 2014). So far, the probability that introduced invertebrates will become established and spread is considered to be quite low; most of them are not able to complete the life cycle and establish a stable population outside the station (Chwedorzewska et al. 2013). Although these organisms cannot survive outside at present, they are potential colonisers, which could be established in the future following the climate warming (Convey and Peck 2019). Тhe four cosmopolitan nematode taxa (E.vulgaris, E.filiformis, G.villosa and P.armatus) also reported from the Maritime Antarctic are considered to be of non-native origin by Andrássy (1998). Due to the absence or scarcity of data on the morphology of these species, at present, their origin cannot be confirmed. Future studies using an integrated taxonomic approach (i.e. simultaneous molecular and morphological characterisation) of materials obtained from pristine areas may help clarify their status. The gap in knowledge of nematode diversity, both in terms of taxonomy and distribution, is essential when assessing the introduction of non-native species. Nematode species richness in the Maritime Antarctic, which is underestimated (Nielsen et al. 2011b) may be compromised with increasing human impact in Antarctica.

The risk to Antarctic biodiversity is not limited to the transfer of alien species originating from other regions of Earth, but also concerns the transfer of native or endemic species from one part of Antarctica to another where they are not part of the indigenous biota (Convey 2008, Hughes et al. 2019, Hughes et al. 2020). This risk is greater because such species are likely to adapt well to the new location, unlike most non-native species that have been transferred to Antarctica from elsewhere (Convey 2015). The transfer of species across natural biogeographic boundaries can affect endemism in these areas. Antarctica is one of the few regions on the Planet where such boundaries still exist (Convey 2008). The nematode faunas of the Maritime and the Continental Antarctic are characterised by their uniqueness, as no overlap at the species level of the two local faunas exists (Andrássy 1998, Maslen and Convey 2006, Convey et al. 2020). This is indicative of an ancient geographical divide between these areas (Andrássy and Gibson 2007) and led Chown and Convey (2006) to define the Gressitt Line, which is located across the base of the Antarctic Peninsula.

So far, there is no evidence for the transfer and establishment of nematode species from the Continental to the Maritime Antarctic. Some nematological reports have included data on the presence of species that are emblematic of the Continental Antarctic (Plectusmurrayi Yeates 1970 and P.frigophilus Kirjanova 1958) in the Maritime part, without morphological data (see Velasco-Castrillón et al. (2014a)). In our study, these records are not included as they are most likely due to misidentification.

Regarding the biotope/microhabitat distribution of the species, the incomplete and insufficient data do not allow a definite conclusion, taking into account also the lack of research in the more inaccessible areas of the Antarctic Peninsula and the islands. Most likely the micro biotope distribution pattern is similar to that shown in the study of the nematode fauna of Cape Chelyuskin in the Arctic (Chernov et al. 1979), where species show very low biotopic associations and most of them inhabit all possible microhabitats (i.e. the majority of species are polytopic); this is also a characteristic feature of other groups of organisms in the polar regions (Chernov et al. 1979).

The major life strategy of organisms living in extreme environments is the development of tolerance and plasticity and not lack of competition and specialisation, which is typical of other biomes (Convey 1996, Chernov et al. 2011).

Comparing the two parts of the Antarctic shows that the nematode studies in the Maritime Antarctic are less represented, whereas investigations in the Continental Antarctic have been more intensive. However, the latter are primarily related to ecology (Adams et al. 2014, Velasco-Castrillón et al. 2014a, Velasco-Castrillón et al. 2018) and have identified to date 34 species of soil nematodes (Velasco-Castrillón et al. 2014a). The smaller number of species in the Continental Antarctic is associated with the harsher and more unfavourable environmental conditions. This zone includes ecosystems with the simplest terrestrial fauna on the Planet, where even nematodes are absent (Convey and McInnes 2005, Convey 2017).

The two opposite polar regions of the Earth are unevenly studied with respect to soil nematodes (Peneva et al. 2009, Holovachov 2014a). Despite the fewer taxonomic studies of terrestrial nematodes in the Arctic, 391 species have been recorded there (Holovachov 2014a). Key geographical and ecological features of both regions, such as geological history, climate, landscape, dispersal barriers and vegetation are responsible for the lower nematode diversity in the Antarctic than in the Arctic (Nielsen and Wall 2013).

Studies that include molecular data for the nematodes in the Maritime Antarctic are too rare to provide valuable information regarding nematode diversity, phylogenetics and endemism (Elshishka et al. 2015b, Elshishka et al. 2017, Kagoshima et al. 2019). The taxonomic position of only three Antarctic dorylaimid species, A.isokaryon, P.paradoxus and E.signyensis, was reconsidered on the basis of morphological and molecular characteristics of 18S rDNA (SSU rDNA) and the D2-D3 expansion fragments of 28S rDNA (LSU rDNA) (Elshishka et al. 2015b, Elshishka et al. 2017) and two new endemic genera were proposed (Pararhyssocolpus and Enchodeloides).

To advance the understanding of phylogeny and phylogeography of Antarctic nematodes, studies are required of other genes with higher evolutionary rates than 18S rDNA, such as 28S rDNA, the internal transcribed spacer (ITS in the ribosomal RNA locus) or the mitochondrial cytochrome c oxidase subunit I (COI). These genes should be included in future taxonomic analyses of Antarctic nematodes (Kagoshima et al. 2019).

The application of integrated taxonomy and DNA barcoding will substantially assist in nematode diversity studies, phylogenetics and especially the recognition of cryptic species. Further, comprehensive molecular studies will provide valuable information on the patterns of species distribution and for gaining additional knowledge on evolutionary processes and biogeography of Antarctic nematodes.

The scant studies of polar regions, in particular of the Maritime Antarctic, demand more intensive sampling and research, especially in the territories that have so far remained unexplored, in order to give a clearer and more adequate view of species diversity and trends in their microhabitat and geographical distribution. Therefore, further efforts aiming at targeted and systematic integrative studies are needed.

Supplementary Material

XML Treatment for Dorylaimida

BDJ.11.e102057-treatment1.xml^{(1.2KB, xml)}

XML Treatment for Nordiidae

BDJ.11.e102057-treatment2.xml^{(1.2KB, xml)}

XML Treatment for Enchodeloides signyensis

BDJ.11.e102057-treatment3.xml^{(1.8KB, xml)}

XML Treatment for Qudsianematidae

BDJ.11.e102057-treatment4.xml^{(1.2KB, xml)}

XML Treatment for Eudorylaimus coniceps

BDJ.11.e102057-treatment5.xml^{(1.3KB, xml)}

XML Treatment for Eudorylaimus pseudocarteri

BDJ.11.e102057-treatment6.xml^{(1.3KB, xml)}

XML Treatment for Eudorylaimus spaulli

BDJ.11.e102057-treatment7.xml^{(1.3KB, xml)}

XML Treatment for Eudorylaimus verrucosus

BDJ.11.e102057-treatment8.xml^{(1.3KB, xml)}

XML Treatment for Eudorylaimus cf. carteri

BDJ.11.e102057-treatment9.xml^{(1.4KB, xml)}

XML Treatment for Pararhyssocolpidae

BDJ.11.e102057-treatment10.xml^{(1.2KB, xml)}

XML Treatment for Pararhyssocolpus paradoxus

BDJ.11.e102057-treatment11.xml^{(1.8KB, xml)}

XML Treatment for Dorylaimidae

BDJ.11.e102057-treatment12.xml^{(1.2KB, xml)}

XML Treatment for Calcaridorylaimus signatus

BDJ.11.e102057-treatment13.xml^{(1.8KB, xml)}

XML Treatment for Mesodorylaimus antarcticus

BDJ.11.e102057-treatment14.xml^{(1.3KB, xml)}

XML Treatment for Mesodorylaimus chipevi

BDJ.11.e102057-treatment15.xml^{(1.3KB, xml)}

XML Treatment for Mesodorylaimus imperator

BDJ.11.e102057-treatment16.xml^{(1.3KB, xml)}

XML Treatment for Mesodorylaimus masleni

BDJ.11.e102057-treatment17.xml^{(1.3KB, xml)}

XML Treatment for Aporcelaimidae

BDJ.11.e102057-treatment18.xml^{(1.2KB, xml)}

XML Treatment for Amblydorylaimus isokaryon

BDJ.11.e102057-treatment19.xml^{(1.8KB, xml)}

XML Treatment for Aphelenchida

BDJ.11.e102057-treatment20.xml^{(1.2KB, xml)}

XML Treatment for Aphelenchoididae

BDJ.11.e102057-treatment21.xml^{(1.2KB, xml)}

XML Treatment for Aphelenchoides haguei

BDJ.11.e102057-treatment22.xml^{(1.3KB, xml)}

XML Treatment for Aphelenchoides vaughani

BDJ.11.e102057-treatment23.xml^{(1.3KB, xml)}

XML Treatment for Laimaphelenchus helicosoma

BDJ.11.e102057-treatment24.xml^{(1.8KB, xml)}

XML Treatment for Alaimida

BDJ.11.e102057-treatment25.xml^{(1.2KB, xml)}

XML Treatment for Amphidelidae

BDJ.11.e102057-treatment26.xml^{(1.2KB, xml)}

XML Treatment for Paramphidelus antarcticus

BDJ.11.e102057-treatment27.xml^{(1.3KB, xml)}

XML Treatment for Monhysterida

BDJ.11.e102057-treatment28.xml^{(1.2KB, xml)}

XML Treatment for Monhysteridae

BDJ.11.e102057-treatment29.xml^{(1.2KB, xml)}

XML Treatment for Eumonhystera filiformis

BDJ.11.e102057-treatment30.xml^{(1.3KB, xml)}

XML Treatment for Eumonhystera vulgaris

BDJ.11.e102057-treatment31.xml^{(1.3KB, xml)}

XML Treatment for Geomonhystera villosa

BDJ.11.e102057-treatment32.xml^{(1.3KB, xml)}

XML Treatment for Plectida

BDJ.11.e102057-treatment33.xml^{(1.2KB, xml)}

XML Treatment for Plectidae

BDJ.11.e102057-treatment34.xml^{(1.2KB, xml)}

XML Treatment for Plectus antarcticus

BDJ.11.e102057-treatment35.xml^{(1.3KB, xml)}

XML Treatment for Plectus cf. antarcticus

BDJ.11.e102057-treatment36.xml^{(1.4KB, xml)}

XML Treatment for Plectus belgicae

BDJ.11.e102057-treatment37.xml^{(1.3KB, xml)}

XML Treatment for Plectus cf. belgicae

BDJ.11.e102057-treatment38.xml^{(1.3KB, xml)}

XML Treatment for Plectus insolens

BDJ.11.e102057-treatment39.xml^{(1.3KB, xml)}

XML Treatment for Plectus tolerans

BDJ.11.e102057-treatment40.xml^{(1.3KB, xml)}

XML Treatment for Plectus cf. tolerans

BDJ.11.e102057-treatment41.xml^{(1.4KB, xml)}

XML Treatment for Plectus meridianus

BDJ.11.e102057-treatment42.xml^{(1.3KB, xml)}

XML Treatment for Plectus cf. meridianus

BDJ.11.e102057-treatment43.xml^{(1.4KB, xml)}

XML Treatment for Plectus armatus

BDJ.11.e102057-treatment44.xml^{(1.8KB, xml)}

XML Treatment for Tylenchida

BDJ.11.e102057-treatment45.xml^{(1.2KB, xml)}

XML Treatment for Psilenchidae

BDJ.11.e102057-treatment46.xml^{(1.2KB, xml)}

XML Treatment for Antarctenchus hooperi

BDJ.11.e102057-treatment47.xml^{(1.3KB, xml)}

XML Treatment for Anguinidae

BDJ.11.e102057-treatment48.xml^{(1.2KB, xml)}

XML Treatment for Ditylenchus parcevivens

BDJ.11.e102057-treatment49.xml^{(1.3KB, xml)}

XML Treatment for Rhabditida

BDJ.11.e102057-treatment50.xml^{(1.2KB, xml)}

XML Treatment for Teratocephalidae

BDJ.11.e102057-treatment51.xml^{(1.2KB, xml)}

XML Treatment for Teratocephalus tilbrooki

BDJ.11.e102057-treatment52.xml^{(1.3KB, xml)}

XML Treatment for Teratocephalus pseudolirellus

BDJ.11.e102057-treatment53.xml^{(1.3KB, xml)}

XML Treatment for Teratocephalus rugosus

BDJ.11.e102057-treatment54.xml^{(1.3KB, xml)}

XML Treatment for Cephalobidae

BDJ.11.e102057-treatment55.xml^{(1.2KB, xml)}

XML Treatment for Acrobeloides arctowskii

BDJ.11.e102057-treatment56.xml^{(1.3KB, xml)}

XML Treatment for Cervidellus cf. vexilliger

BDJ.11.e102057-treatment57.xml^{(1.4KB, xml)}

XML Treatment for Rhabditidae

BDJ.11.e102057-treatment58.xml^{(1.2KB, xml)}

XML Treatment for Cuticularia firmata

BDJ.11.e102057-treatment59.xml^{(1.3KB, xml)}

XML Treatment for Rhabditis krylovi

BDJ.11.e102057-treatment60.xml^{(1.3KB, xml)}

XML Treatment for Rhabditis marina -group

BDJ.11.e102057-treatment61.xml^{(1.4KB, xml)}

XML Treatment for Peloderidae

BDJ.11.e102057-treatment62.xml^{(1.2KB, xml)}

XML Treatment for Pelodera teres -group

BDJ.11.e102057-treatment63.xml^{(1.4KB, xml)}

XML Treatment for Pelodera strongyloides -group

BDJ.11.e102057-treatment64.xml^{(1.4KB, xml)}

XML Treatment for Pelodera parateres -group

BDJ.11.e102057-treatment65.xml^{(1.4KB, xml)}

XML Treatment for Mononchida

BDJ.11.e102057-treatment66.xml^{(1.2KB, xml)}

XML Treatment for Mononchidae

BDJ.11.e102057-treatment67.xml^{(1.2KB, xml)}

XML Treatment for Coomansus gerlachei

BDJ.11.e102057-treatment68.xml^{(2KB, xml)}

Acknowledgements

This study was funded by the Programme for career development of young scientists, Bulgarian Academy of Sciences, the project №80-10-214, National Centre for Polar Studies, Sofia University "St. Kliment Ohridski” and ANIDIV4, Bulgarian Academy of Sciences. The authors are thankful to Prof. Aneta Kostadinova from the Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, for the critical reading of the manuscript and helpful suggestions.

References

Adams B. J., Bardgett R. D., Ayres E., Wall D. H., Aislabie J., Bamforth S., Bargagli R., Cary C., Cavacini P., Connell L., Convey P., Fell J. W., Frati F., Hogg I. D., Newsham K. K., O'Donnell A., Russell N., Seppelt R. D., Stevens M. I. Diversity and distribution of Victoria Land biota. Soil Biology and Biochemistry. 2006;38:3003–3018. doi: 10.1016/j.soilbio.2006.04.030. [DOI] [Google Scholar]
Adams B. J., Wall D. H., Virginia R. A., Broos E., Knox M. A. Ecological biogeography of the terrestrial nematodes of Victoria Land, Antarctica. ZooKeys. 2014;419:29–71. doi: 10.3897/zookeys.419.7180. [DOI] [PMC free article] [PubMed] [Google Scholar]
Andrássy I. Revision of the order Monhysterida (Nematoda) inhabiting soil and waters. Opusculla Zoologica. 1981;17:13–47. [Google Scholar]
Andrássy I. Nematodes in the Sixth continent. Journal of Nematode Morphology and Systematics. 1998;1:107–186. [Google Scholar]
Andrássy I. Free-living nematodes of Hungary (Nematoda errantia), I. Pedozoologica Hungarica No. 3. Hungarian Natural History Museum; Budapest: 2005. 518. [Google Scholar]
Andrássy I. Free-living nematodes of Hungary (Nematoda errantia), II. Pedozoologica Hungarica, No. 4. Hungarian Natural History Museum; Budapest: 2007. 496. [Google Scholar]
Andrássy I., Gibson J. Nematodes from saline and freshwater lakes of the Vestfold Hills, East Antarctica, including the description of Hypodontolaimusantarcticus sp. n. Polar Biology. 2007;30:669–678. doi: 10.1007/s00300-006-0224-4. [DOI] [Google Scholar]
Andrássy I. Free-living nematodes of Hungary (Nematoda Errantia), III. Pedozoologica Hungarica, No 5. Hungarian Natural History Museum; Budapest: 2009. 608. [Google Scholar]
Ara Khanum Tabassum, Mehmood Nasir, Khatoon Nasira. Nematodes as biological indicators of soil quality in the agroecosystems. Nematodes - recent advances, management and new perspectives. IntechOpen. 2022 doi: 10.5772/intechopen.99745. [DOI]
Bastian H. Ch. Monograph on the Anguillulidae, or free nematoids, marine, land, and freshwater; with descriptions of 100 new species. Transactions of the Linnean Society of London. 1865;25:73–184. doi: 10.1111/j.1096-3642.1865.tb00179.x. [DOI] [Google Scholar]
Bütschli O. Beitrage zur Kenntnis der freilebenden Nematoden. Nova Acta Academiae Nat Curios. 1873;35(5):1–124. [Google Scholar]
Caldwell J. R. The Signy Island terrestrial reference sites: XIII. Population dynamics of the nematode fauna. British Antarctic Survey. 1981;54:33–46. [Google Scholar]
Carapelli Antonio, Convey Peter, Frati Francesco, Spinsanti Giacomo, Fanciulli Pietro P. Population genetics of three sympatric springtail species (Hexapoda: Collembola) from the South Shetland Islands: evidence for a common biogeographic pattern. Biological Journal of the Linnean Society. 2017;120(4):788–803. doi: 10.1093/biolinnean/blw004. [DOI] [Google Scholar]
Chauvin Camille, Trambolho Manon, Hedde Mickael, Makowski David, Cérémonie Hélène, Jimenez Anne, Villenave Cécile. Soil nematodes as indicators of heavy metal pollution: A meta-analysis. Open Journal of Soil Science. 2020;10(12):579–601. doi: 10.4236/ojss.2020.1012028. [DOI] [Google Scholar]
Chaves E. Mononchida (Nematoda) from Argentina. Nematologica. 1990;36:181–193. doi: 10.1163/002925990X00149. [DOI] [Google Scholar]
Chernov Y., Striganova R., Ananjeva I., Kuzmin L. In: In: Arkticheskie Tundry i Polyarnye Pustyni Taimyra. Aleksandrova V. D, Matveyeva N. V, editors. Nauka; 1979. Animal world of the polar desert at Cape Chelyuskin.35–49. Russian. [Google Scholar]
Chernov Y., Matveeva N., Makarova O. Polar deserts: At the limit of life. Priroda. 2011;9:31–43. Russian. [Google Scholar]
Chown Steven L., Brooks Cassandra M. The State and Future of Antarctic Environments in a Global Context. Annual Review of Environment and Resources. 2019;44(1):1–30. doi: 10.1146/annurev-environ-101718-033236. [DOI] [Google Scholar]
Chown S. L., Convey P. In: Biogeography: Trends in Antarctic terrestrial and limnetic ecosystems. Bergstom D. M., Convey P., Huiskes H. L., editors. Springer Dordrecht, 55–70.; 2006. Biogeography. [DOI] [Google Scholar]
Chown S. L., Convey P. Antarctic entomology. Annual Revue Entomology. 2016;61(1):119–37. doi: 10.1146/annur. [DOI] [PubMed] [Google Scholar]
Chwedorzewska K., Korczak−Abshire M., Olech M., Lityńska−Zając M., Augustyniuk−Kram A. Alien invertebrates transported accidentally to the Polish Antarctic Station in cargo and on fresh foods. Polish Polar Research. 2013;34(1):55–66. doi: 10.2478/popore-2013-0005. [DOI] [Google Scholar]
Clarke K. R., Gorley R. N. PRIMER v7: User Manual/Tutorial. PRIMER-E Plymouth; 2015. [Google Scholar]
Collins Gemma E., Young Monica R., Convey Peter, Chown Steven L., Cary S. Craig, Adams Byron J., Wall Diana H., Hogg Ian D. Biogeography and Genetic Diversity of Terrestrial Mites in the Ross Sea Region, Antarctica. Genes. 2023;14(3) doi: 10.3390/genes14030606. [DOI] [PMC free article] [PubMed] [Google Scholar]
Convey P. The influence of environmental characteristics on life history attributes of Antarctic terrestrial biota. Biological Reviews. 1996;71(2):191–225. doi: 10.1111/j.1469-185x.1996.tb00747.x. [DOI] [Google Scholar]
Convey P., Smith R. I.L>, Peat H. J., Pugh P. J.A. The terrestrial biota of Charcot Island, eastern Bellingshausen Sea, Antarctica: an example of extreme isolation. Antarctic Science. 2000;12:406–413. doi: 10.1017/S095410200000047X. [DOI] [Google Scholar]
Convey P., Wynn-Williams D. Antarctic soil nematode response to artificial climate amelioration. European Journal of Soil Biology. 2002;38:255–259. doi: 10.1016/s1164-5563(02)01155-x. [DOI] [Google Scholar]
Convey P, McInnes S J. Exceptional tardigrade-dominated ecosystems in Ellsworth Land, Antarctica. Ecology. 2005;86(2):519–527. doi: 10.1890/04-0684. [DOI] [Google Scholar]
Convey P. Antarctic terrestrial ecosystems: Responses to environmental change. Polarforschung. 2006;75:101–111. [Google Scholar]
Convey Peter. In: Non-native species in the Antarctic. Rogan-Finnemore M., editor. Proceedings. Christchurch: Gateway Antarctica; 2008. Non-native species in Antarctic terrestrial and freshwater environments: presence, sources, impacts and predictions.97-130 [Google Scholar]
Convey P., Gibson J., Hillenbrand D., Hodgson A., Pugh J. A., Smellie L., Stevens I. Antarctic terrestrial life - challenging the history of the frozen continent? Biological Reviews. 2008;83:103–117. doi: 10.1111/j.1469-185X.2008.00034.x. [DOI] [PubMed] [Google Scholar]
Convey P. In: Exploring the last continent: an introduction to Antarctica. Liggett Daniela, Storey Bryan, Cook Yvonne, Meduna Veronika., editors. Springer; Switzerland: 2015. Alien invasions. The impact of non-native species: changing the face of life on land in Antarctica?539-555. [DOI] [Google Scholar]
Convey P. Antarctic Ecosystems. Reference Module in Life Sciences. 2017 doi: 10.1016/b978-0-12-809633-8.02182-8. [DOI]
Convey P., Peck L. S. Antarctic environmental change and biological responses. Science Advances. 2019;5(11) doi: 10.1126/sciadv.aaz0888. [DOI] [PMC free article] [PubMed] [Google Scholar]
Convey P., Biersma E. M., Casanova-Katny A., Maturana C. S. In: Past Antarctica: Paleoclimatology and climate change. Oliva M., Ruiz-Fernandez J., editors. Elsevier; 2020. Refuges of Antarctic diversity.181-200. [DOI] [Google Scholar]
Courtright E. M., Wall D. H., Virginia R. A., Frisse L. M., Vida J. T., Thomas W. K. Nuclear and mitochondrial DNA sequence diversity in the Antarctic nematode Scottnema lindsayae. Journal of Nematology. 2000;32:143–153. [PMC free article] [PubMed] [Google Scholar]
Czechowski P., J Clarke L., Cooper A., I Stevens M. A primer to metabarcoding surveys of Antarctic terrestrial biodiversity. Antarctic Science. 2017;29:3–15. doi: 10.1017/S0954102016000389. [DOI] [Google Scholar]
de Man J. G. Die einheimischen, frei in der reinen Erde und im süßen Wasser lebende Nematoden monographisch bearbeitet. Vorläufiger Bericht und descriptiv-systematischer Theil. Tijdschrift der Nederlandische Dierkundige Vereeniging. 1880;5:1–104. [Google Scholar]
de Man J. G. Nematodes libres. Result. voyage S.Y Belgica, Zoology. 1904;55 [Google Scholar]
Du Preez G, Daneel M, De Goede R, Du Toit M J, Ferris H, Fourie H, Geisen S, Kakouli-Duarte T, Korthals G, Sánchez-Moreno S, Schmidt Jan H. Nematode-based indices in soil ecology: Application, utility, and future directions. Soil Biology and Biochemistry. 2022;169 doi: 10.1016/j.soilbio.2022.108640. [DOI] [Google Scholar]
Ebach M., Pugh P. J.A., Convey P. Surviving out in the cold: Antarctic endemic invertebrates and their refugia. http://www.jstor.org/stable/20488312. Journal of Biogeography. 2008;35(12):2176–2186. doi: 10.1111/j.1365-2699.2008.01953.x. [DOI] [Google Scholar]
Elshishka M., Lazarova S., Peneva V. Terrestrial nematodes of Livingston Island, maritime Antarctica. In: Pimpirev Ch. & Chipev N. (Eds). Bulgarian Antarctic Research. A Synthesis. "St Kliment Ohridski". 2015;(BN:978-954-07-3939-7):320–334.
Elshishka M., Lazarova S., Radoslavov G., Hristov P., Peneva V. New data on two remarkable antarctic species Amblydorylaimusisokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpusparadoxus (Loof, 1975) gen. n., comb. n. (Nematoda, Dorylaimida). ZooKeys. 2015;511:25–68. doi: 10.3897/zookeys.511.9793. [DOI] [PMC free article] [PubMed] [Google Scholar]
Elshishka M., Lazarova S., Radoslavov G., Hristov P., Peneva V. Biogeography and phylogenetic position of Enchodeloidessignyensis (Loof, 1975) gen. n. comb. n. from Maritime Antarctic (Nematoda, Nordiidae). ZooKeys. 2017;697:37–58. doi: 10.3897/zookeys.697.13770. [DOI] [PMC free article] [PubMed] [Google Scholar]
Ferris H., Bongers T., de Goede R. G.M. A framework for soil food web diagnostics: extension of the nematode faunal analysis concept. Applied Soil Ecology. 2001;18(1):13–29. doi: 10.1016/s0929-1393(01)00152-4. [DOI] [Google Scholar]
Freckman D. W., Virginia R. A. Low-diversity Antarctic soil nematode communities: distribution and response to disturbance. Ecology. 1997;78:363–369. doi: 10.1890/0012-9658. [DOI] [Google Scholar]
Gantait V. Diversity of nematodes in Antarctica under changing climatic conditions. Journal of Crop and Weed. 2014;10(2) [Google Scholar]
Greene S. W. Studies in Colobanthusquitensis (Kunth) Bartl. And Deschampsiaantarctica Desv. I Introduction. British Antarctic Survey Bulletin. 1970;23:19–24. [Google Scholar]
Holdgate M. W. Terrestrial Ecosystems in the Antarctic. Philosophical Transactions of the Royal Society B: Biological Sciences. 1977;279(963):5–25. doi: 10.1098/rstb.1977.0068. [DOI] [Google Scholar]
Holovachov O., Bostrom S. Description of Acrobeloidesarctowskii sp. n. (Rhabditida: Cephalobidae) from King George Island, Antarctica. Russian Journal of Nematology. 2006;14:51–56. [Google Scholar]
Holovachov O. Nematodes from terrestrial and freshwater habitats in the Arctic. Biodiversity Data Journal. 2014;2:1165. doi: 10.3897/BDJ.2.e1165. [DOI] [PMC free article] [PubMed] [Google Scholar]
Holovachov O. In: Handbook of Zoology. Gastrotricha, Cycloneuralia, Gnathifera. Volume 2: Nematoda. Schmidt-Rhaesa Andreas., editor. De Gruyter; 2014. Order Plectida Gadea, 1973. [DOI] [Google Scholar]
Hughes K. A., Convey P., Maslen N. R., Smith R. I. L. Accidental transfer of non-native soil organisms into Antarctica on construction vehicles. Biological Invasions. 2010;12(4):875–891. doi: 10.1007/s10530-009-9508-2. [DOI] [Google Scholar]
Hughes K. A., Convey Peter, Pertierra Luis R., Vega Greta C., Aragón Pedro, Olalla-Tárraga Miguel Á. Human-mediated dispersal of terrestrial species between Antarctic biogeographic regions: A preliminary risk assessment. Journal of Environmental Management. 2019;232:73–89. doi: 10.1016/j.jenvman.2018.10.095. [DOI] [PubMed] [Google Scholar]
Hughes K. A., Pescott O. L., Peyton J., Adriaens T., Cottier‐Cook E. J., Key G., Rabitsch W., Tricarico E., Barnes D. K. A., Baxter N., Belchier M., Blake D., Convey P., Dawson W., Frohlich D., Gardiner L. M., González‐Moreno P., James R., Malumphy C., Martin S., Martinou A. F., Minchin D., Monaco A., Moore N., Morley S. A., Ross K., Shanklin J., Turvey K., Vaughan D., Vaux A. G. C., Werenkraut V., Winfield I. J., Roy H. E. Invasive non‐native species likely to threaten biodiversity and ecosystems in the Antarctic Peninsula region. Global Change Biology. 2020;26(4):2702–2716. doi: 10.1111/gcb.14938. [DOI] [PMC free article] [PubMed] [Google Scholar]
Iakovenko N. S., Smykla J., Convey P., Kašparová E., Kozeretska I. A., Trokhymets V., Dykyy I., Plewka M., Devetter M., Duriš Z., Janko K. Antarctic bdelloid rotifers: diversity, endemism and evolution. Hydrobiologia. 2015;761(1):5–43. doi: 10.1007/s10750-015-2463-2. [DOI] [Google Scholar]
Jairajpuri M. S., Khan W. U. Studies on Mononchida of India. IX. Further division of the genus Clarkus Jairajpuri, 1970 with proposai of Coomansus n. gen. and descriptions of two new species. Nematologica. 1977;23:89–96. doi: 10.1163/187529270x00153. [DOI] [Google Scholar]
Janiec K. The comparison of freshwater invertebrates of Spitsbergen (Arctic) and King George Island (Antarctic) Polish Polar Research. 1996;17:173–202. [Google Scholar]
Jiménez Guirado D., Wouts W. M., Bello A. Morphometric studies on Coomansus Jairajpuri & Khan, 1977 (Nematoda: Mononchida) and descriptions of two new species from the Subantarctic region. Fundamental and Applied Nematology. 1998;21:527–546. [Google Scholar]
Kagoshima H., Maslen R., Kito K., Imura S., Niki H., Convey P. Integrated taxonomy combining morphological and molecular biological analyses of soil nematodes from maritime Antarctica. Polar Biology. 2019;42:877–887. doi: 10.1007/s00300-019-02482-8. [DOI] [Google Scholar]
Kirjanova E. S. Antarkticheskie predstaviteli presnovodnykh nematod roda Plectus Bastian (Nematodes Plectidae. Information Bulletin of the Soviet Antarctic Expedition. 1958;3:101–103. [Google Scholar]
Kito K. Taxonomical and ecological studies of free-living nematodes carried out in Antarctica as a cooperative research program of NIPR. Sapporo Medical Journal. 2009;78:13–18. [Google Scholar]
Lee J. E., Chown S. L. Breaching the dispersal barrier to invasion: quantification and management. Ecological Applications. 2009;19(7):1944–1959. doi: 10.1890/08-2157.1. [DOI] [PubMed] [Google Scholar]
Longton R. E. Vegetation ecology and classification in the Antarctic zone. Canadian Journal of Botany. 1979;57(20):2264–2278. doi: 10.1139/b79-273. [DOI] [Google Scholar]
Loof P. A.A. Dorylaimoidea from some subantarctic islands. Nematologica. 1975;21:219–255. doi: 10.1163/187529275X00581. [DOI] [Google Scholar]
Maslen N. R. Six new nematode species from the maritime Antarctic. Nematologica. 1979;25(3):288–308. doi: 10.1163/187529279x00028. [DOI] [Google Scholar]
Maslen N. R. Additions to the nematode fauna of the Antarctic Region with keys to taxa. British Antarctic Survey Bulletin. 1979;49:207–229. [Google Scholar]
Maslen N. R. The Signy Island terrestrial reference sites: XII. Population ecology of nematodes with additions to the fauna. British Antarctic Survey Bulletin. 1981;53:57–75. [Google Scholar]
Maslen N. R., Convey P. Nematode diversity and distribution in the southern maritime Antarctic - clues to history? Soil Biology and Biochemistry. 2006;38:3141–3151. doi: 10.1016/j.soilbio.2005.12.007. [DOI] [Google Scholar]
Nedelchev S., Peneva V. Description of three new species genus Mesodorylaimus Andrássy 1959 (Nematoda, Dorylaimidae) in Livingston Island, Antarctic a notes M.imperator Loof 1975. Russian Journal of Nematology. 2000;8:161–172. [Google Scholar]
Nedelchev S., Peneva V. Description of the male of Mesodorylaimuschipevi Nedelchev & Peneva, 2000 (Nematoda: Dorylaimidae) from Livingston Island, Antarctica. Russian Journal of Nematology. 2007;15:75–77. [Google Scholar]
Neher D A. Role of nematodes in soil health and their use as indicators. Journal of nematology. 2001;33(4):161–8. [PMC free article] [PubMed] [Google Scholar]
Neher D. A. Ecology of plant and free-living nematodes in natural and agricultural coil. Annual Review of Phytopathology. 2010;48(1):371–394. doi: 10.1146/annurev-phyto-073009-114439. [DOI] [PubMed] [Google Scholar]
Newman Louise, Convey P, Gibson JAE, Linse K. Antarctic Paleobiology: Glacial refugia and constraints on past ice-sheet reconstructions. PAGES news. 2009;17(1):22–24. doi: 10.22498/pages.17.1.22. [DOI] [Google Scholar]
Newsham K., Hall R., Maslen N. R. Experimental warming of bryophytes increases the population density of the nematode Plectusbelgicae in maritime Antarctica. Antarctic Science. 2020;33(2):165–173. doi: 10.1017/s0954102020000528. [DOI] [Google Scholar]
Nielsen U. N., Wall D. H., Adams B. J., Virginia R. A. Antarctic nematode communities: observed and predicted responses to climate change. Polar Biology. 2011;34:1701–1711. doi: 10.1007/s00300-011-1021-2. [DOI] [Google Scholar]
Nielsen U. N., Wall D. H., Li G., Toro M., Adams B. J., Virginia R. A. Nematode communities of Byers Peninsula, Livingston Island, maritime Antarctica. Antarctic Science. 2011;23(4):349–357. doi: 10.1017/s0954102011000174. [DOI] [Google Scholar]
Nielsen U. N., Wall D. H. The future of soil invertebrate communities in polar regions: different climate change responses in the Arctic and Antarctic? Ecology Letters. 2013;16(3):409–419. doi: 10.1111/ele.12058. [DOI] [PubMed] [Google Scholar]
Ochyra R. The moss flora of King George Island, Antarctica. Polish Academy of Sciences; 1998. [Google Scholar]
Peneva V., Chipev N., Nedelchev S. Prionchuluspunctatus Cobb, 1917, a new record from Patagonia (Chile), with notes on other mononchids from Antarctic Regions. Bulgarian Antarctic Research Life Sciences. 1996:93–101.
Peneva V., Chipev N. Laimaphelenchushelicosoma (Maslen, 1979) n. comb. (Nematoda: Aphelenchida) from Livingston Island. In: Golemansky V, Chipev N (Eds) Bulgarian Antarctic Research. Life Sciences. Pensoft. Sofia - Moscow. 1999;2:57–61. [Google Scholar]
Peneva V., Lazarova S., Chipev N. In: Bulgarian Antarctic Research. Life Sciences. Golemansky V., Chipev N., editors. Vol.3. Pensoft; Sofia-Moscow: 2002. Description of the male of Enchodelus (Rotundus) signyensis Loof, 1975 (Nematoda, Nordiidae) from Livingston Island, Antarctica, and notes on its morphology and distribution.83-90 [Google Scholar]
Peneva V., Lazarova S., Elshishka M., Makarova O., Penev L. In: Species and communities in extreme environment. Golovatch S. I., Makarova O. L., Babenko A. B., Penev L. D., editors. Pensoft Publishers & KMK Scientific Press; Sofia - Moscow: 2009. Nematode assemblages of hair-grass (Deschampsia spp.) microhabitats from polar and alpine deserts in Arctic and Antaractic.419-438 [Google Scholar]
Pickup J. Ecophysiological studies of terrestrial free-living nematodes of Signy Island. British Antarctic Survey Bulletin. 1988;81:77–81. [Google Scholar]
Pickup J. Seasonal variation in the cold-hardiness of a free-living predatory antarctic nematode, Coomansusgerlachei (Mononchidae) Polar Biology. 1990;10:307–315. doi: 10.2307/2389345. [DOI] [Google Scholar]
Russell D. J., Hohberg K., Potapov M., Brückner A., Otte V., Christian A. Native terrestrial invertebrate fauna from the northern Antarctic Peninsula: new records, state of current knowledge and ecological preferences - Summary of a German federal study. Soil Organisms. 2014;86:1–58. [Google Scholar]
Shishida Y., Ohyama Y. A note on the terrestrial nematodes around Palmer Station, Antarctica (Extend abstract. Proceeding of the NIPR Symposium on Polar Biology. 1989;2:223–224. [Google Scholar]
Short K. A., Sands C. J., McInnes S. J., Pisani D., Stevens M. I., Convey P. An ancient, Antarctic-specific species complex: large divergences between multiple Antarctic lineages of the tardigrade genus Mesobiotus. Molecular Phylogenetics and Evolution. 2022;170 doi: 10.1016/j.ympev.2022.107429. [DOI] [PubMed] [Google Scholar]
Smith R. I.L. In: Antarctic ecology. Laws R M, editor. Vol. 1. Academic Press; 1984. Terrestrial plant biology of the sub-Antarctic and Antarctic.61-162 [Google Scholar]
Spaull V. W. Antarctenchushooperi, gen., n. sp. (Nematoda: Dolichodoridae) from Signy Island, South Orkney Islands, with the erection of a new subfamily. Nematologica. 1972;18:353–9. doi: 10.1163/187529272X00629. [DOI] [Google Scholar]
Spaull V. W. Distribution of soil nematodes in the maritime Antarctic. British Antarctic Survey Bulletin. 1973;37:1–6. [Google Scholar]
Spaull V. W. Qualitative and quantitative distribution of soil nematodes of Signy Island, South Orkney Islands. British Antarctic Survey Bulletin. 1973;(33-34):177–184.
Spaull V. W. Distribution of nematode feeding group at Signy Island, South Orkney Islands, with an estimate of their biomass and oxygen consumption. British Antarctic Survey Bulletin. 1973;37:21–32. [Google Scholar]
Spaull V. W. Observations on Coomansusgerlachei (de Man) (Nematoda: Mononchidae), a predacious nematode from the Antarctic. British Antarctic Survey Bulletin. 1981;(53):195–200.
Stevens M. I., Mackintosh A. N. Location, location, location: survival of Antarctic biota requires the best real estate. Biological Letters. 2023;19:20220590. doi: 10.1098/rsbl.2022.0590. [DOI] [PMC free article] [PubMed] [Google Scholar]
Taylor Lois S., Phillips Gary, Bernard Ernest C., DeBruyn Jennifer M. Soil nematode functional diversity, successional patterns, and indicator taxa associated with vertebrate decomposition hotspots. PLOS One. 2020;15(11) doi: 10.1371/journal.pone.0241777. [DOI] [PMC free article] [PubMed] [Google Scholar]
Tilbrook P. J. The Signy Island terrestrial reference sites: 1. An introduction. British Antarctic Survey Bulletin. 1973;33 & 34:65–76. [Google Scholar]
Treonis A. M., Wall D. Soil nematodes and desiccation survival in the extreme arid environment of the Antarctic dry valleys. Integrative and Comparative Biology. 2005;45(5):741–750. doi: 10.1093/icb/45.5.741. [DOI] [PubMed] [Google Scholar]
Tsalolikhin S. J. Rare and new nematode species from Antarctica. Trudi Zoologicheskogo Instituta Akademii Nauk, Leningrad. 1989;194:96–101. Russian. [Google Scholar]
van den Hoogen Johan, Geisen Stefan, Routh Devin, Ferris Howard, Traunspurger Walter, Wardle David A., de Goede Ron G. M., Adams Byron J., Ahmad Wasim, Andriuzzi Walter S., Bardgett Richard D., Bonkowski Michael, Campos-Herrera Raquel, Cares Juvenil E., Caruso Tancredi, de Brito Caixeta Larissa, Chen Xiaoyun, Costa Sofia R., Creamer Rachel, Mauro da Cunha Castro José, Dam Marie, Djigal Djibril, Escuer Miguel, Griffiths Bryan S., Gutiérrez Carmen, Hohberg Karin, Kalinkina Daria, Kardol Paul, Kergunteuil Alan, Korthals Gerard, Krashevska Valentyna, Kudrin Alexey A., Li Qi, Liang Wenju, Magilton Matthew, Marais Mariette, Martín José Antonio Rodríguez, Matveeva Elizaveta, Mayad El Hassan, Mulder Christian, Mullin Peter, Neilson Roy, Nguyen T. A. Duong, Nielsen Uffe N., Okada Hiroaki, Rius Juan Emilio Palomares, Pan Kaiwen, Peneva Vlada, Pellissier Loïc, Carlos Pereira da Silva Julio, Pitteloud Camille, Powers Thomas O., Powers Kirsten, Quist Casper W., Rasmann Sergio, Moreno Sara Sánchez, Scheu Stefan, Setälä Heikki, Sushchuk Anna, Tiunov Alexei V., Trap Jean, van der Putten Wim, Vestergård Mette, Villenave Cecile, Waeyenberge Lieven, Wall Diana H., Wilschut Rutger, Wright Daniel G., Yang Jiue-in, Crowther Thomas Ward. Soil nematode abundance and functional group composition at a global scale. Nature. 2019;572(7768):194–198. doi: 10.1038/s41586-019-1418-6. [DOI] [PubMed] [Google Scholar]
Velasco-Castrillón A., Stevens M. Morphological and molecular diversity at a regional scale: A step closer to understanding Antarctic nematode biogeography. Soil Biology & Biochemistry. 2014;70:272–284. doi: 10.1016/j.soilbio.2013.12.016. [DOI] [Google Scholar]
Velasco-Castrillón Alejandro, Gibson John A. E., Stevens Mark I. A review of current Antarctic limno-terrestrial microfauna. Polar Biology. 2014;37(10):1517–1531. doi: 10.1007/s00300-014-1544-4. [DOI] [Google Scholar]
Velasco-Castrillón A., Page T. J., Gibson J. A.E., Stevens M. I. Surprisingly high levels of biodiversity and endemism amongst Antarctic rotifers uncovered with mitochondrial DNA. Biodiversity. 2014;15:130–142. doi: 10.1080/14888386.2014.930717. [DOI] [Google Scholar]
Velasco-Castrillón Alejandro, Hawes Ian, Stevens Mark I. 100 years on: a re-evaluation of the first discovery of microfauna from Ross Island, Antarctica. Antarctic Science. 2018;30(4):209–219. doi: 10.1017/s095410201800007x. [DOI] [Google Scholar]
Wharton D. A., Block W. Freezing tolerance in some Antarctic nematodes. Functional Ecology. 1993;7:578–584. doi: 10.2307/2390134. [DOI] [Google Scholar]
Wharton D. A. Cold tolerance strategies in nematodes. Biological Reviews. 1995;70(1):161–185. doi: 10.1111/j.1469-185x.1995.tb01442.x. [DOI] [PubMed] [Google Scholar]
Yeates G. W. Two Terrestrial Nematodes from the McMurdo Sound Region Antarctica, with a note on Anaplectusarenicola Killick, 1964. Journal of Helminthology. 1970;44:27–34. doi: 10.1017/S0022149X00021416. [DOI] [Google Scholar]

Associated Data

This section collects any data citations, data availability statements, or supplementary materials included in this article.

Supplementary Materials

XML Treatment for Dorylaimida

BDJ.11.e102057-treatment1.xml^{(1.2KB, xml)}

XML Treatment for Nordiidae

BDJ.11.e102057-treatment2.xml^{(1.2KB, xml)}

XML Treatment for Enchodeloides signyensis

BDJ.11.e102057-treatment3.xml^{(1.8KB, xml)}

XML Treatment for Qudsianematidae

BDJ.11.e102057-treatment4.xml^{(1.2KB, xml)}

XML Treatment for Eudorylaimus coniceps

BDJ.11.e102057-treatment5.xml^{(1.3KB, xml)}

XML Treatment for Eudorylaimus pseudocarteri

BDJ.11.e102057-treatment6.xml^{(1.3KB, xml)}

XML Treatment for Eudorylaimus spaulli

BDJ.11.e102057-treatment7.xml^{(1.3KB, xml)}

XML Treatment for Eudorylaimus verrucosus

BDJ.11.e102057-treatment8.xml^{(1.3KB, xml)}

XML Treatment for Eudorylaimus cf. carteri

BDJ.11.e102057-treatment9.xml^{(1.4KB, xml)}

XML Treatment for Pararhyssocolpidae

BDJ.11.e102057-treatment10.xml^{(1.2KB, xml)}

XML Treatment for Pararhyssocolpus paradoxus

BDJ.11.e102057-treatment11.xml^{(1.8KB, xml)}

XML Treatment for Dorylaimidae

BDJ.11.e102057-treatment12.xml^{(1.2KB, xml)}

XML Treatment for Calcaridorylaimus signatus

BDJ.11.e102057-treatment13.xml^{(1.8KB, xml)}

XML Treatment for Mesodorylaimus antarcticus

BDJ.11.e102057-treatment14.xml^{(1.3KB, xml)}

XML Treatment for Mesodorylaimus chipevi

BDJ.11.e102057-treatment15.xml^{(1.3KB, xml)}

XML Treatment for Mesodorylaimus imperator

BDJ.11.e102057-treatment16.xml^{(1.3KB, xml)}

XML Treatment for Mesodorylaimus masleni

BDJ.11.e102057-treatment17.xml^{(1.3KB, xml)}

XML Treatment for Aporcelaimidae

BDJ.11.e102057-treatment18.xml^{(1.2KB, xml)}

XML Treatment for Amblydorylaimus isokaryon

BDJ.11.e102057-treatment19.xml^{(1.8KB, xml)}

XML Treatment for Aphelenchida

BDJ.11.e102057-treatment20.xml^{(1.2KB, xml)}

XML Treatment for Aphelenchoididae

BDJ.11.e102057-treatment21.xml^{(1.2KB, xml)}

XML Treatment for Aphelenchoides haguei

BDJ.11.e102057-treatment22.xml^{(1.3KB, xml)}

XML Treatment for Aphelenchoides vaughani

BDJ.11.e102057-treatment23.xml^{(1.3KB, xml)}

XML Treatment for Laimaphelenchus helicosoma

BDJ.11.e102057-treatment24.xml^{(1.8KB, xml)}

XML Treatment for Alaimida

BDJ.11.e102057-treatment25.xml^{(1.2KB, xml)}

XML Treatment for Amphidelidae

BDJ.11.e102057-treatment26.xml^{(1.2KB, xml)}

XML Treatment for Paramphidelus antarcticus

BDJ.11.e102057-treatment27.xml^{(1.3KB, xml)}

XML Treatment for Monhysterida

BDJ.11.e102057-treatment28.xml^{(1.2KB, xml)}

XML Treatment for Monhysteridae

BDJ.11.e102057-treatment29.xml^{(1.2KB, xml)}

XML Treatment for Eumonhystera filiformis

BDJ.11.e102057-treatment30.xml^{(1.3KB, xml)}

XML Treatment for Eumonhystera vulgaris

BDJ.11.e102057-treatment31.xml^{(1.3KB, xml)}

XML Treatment for Geomonhystera villosa

BDJ.11.e102057-treatment32.xml^{(1.3KB, xml)}

XML Treatment for Plectida

BDJ.11.e102057-treatment33.xml^{(1.2KB, xml)}

XML Treatment for Plectidae

BDJ.11.e102057-treatment34.xml^{(1.2KB, xml)}

XML Treatment for Plectus antarcticus

BDJ.11.e102057-treatment35.xml^{(1.3KB, xml)}

XML Treatment for Plectus cf. antarcticus

BDJ.11.e102057-treatment36.xml^{(1.4KB, xml)}

XML Treatment for Plectus belgicae

BDJ.11.e102057-treatment37.xml^{(1.3KB, xml)}

XML Treatment for Plectus cf. belgicae

BDJ.11.e102057-treatment38.xml^{(1.3KB, xml)}

XML Treatment for Plectus insolens

BDJ.11.e102057-treatment39.xml^{(1.3KB, xml)}

XML Treatment for Plectus tolerans

BDJ.11.e102057-treatment40.xml^{(1.3KB, xml)}

XML Treatment for Plectus cf. tolerans

BDJ.11.e102057-treatment41.xml^{(1.4KB, xml)}

XML Treatment for Plectus meridianus

BDJ.11.e102057-treatment42.xml^{(1.3KB, xml)}

XML Treatment for Plectus cf. meridianus

BDJ.11.e102057-treatment43.xml^{(1.4KB, xml)}

XML Treatment for Plectus armatus

BDJ.11.e102057-treatment44.xml^{(1.8KB, xml)}

XML Treatment for Tylenchida

BDJ.11.e102057-treatment45.xml^{(1.2KB, xml)}

XML Treatment for Psilenchidae

BDJ.11.e102057-treatment46.xml^{(1.2KB, xml)}

XML Treatment for Antarctenchus hooperi

BDJ.11.e102057-treatment47.xml^{(1.3KB, xml)}

XML Treatment for Anguinidae

BDJ.11.e102057-treatment48.xml^{(1.2KB, xml)}

XML Treatment for Ditylenchus parcevivens

BDJ.11.e102057-treatment49.xml^{(1.3KB, xml)}

XML Treatment for Rhabditida

BDJ.11.e102057-treatment50.xml^{(1.2KB, xml)}

XML Treatment for Teratocephalidae

BDJ.11.e102057-treatment51.xml^{(1.2KB, xml)}

XML Treatment for Teratocephalus tilbrooki

BDJ.11.e102057-treatment52.xml^{(1.3KB, xml)}

XML Treatment for Teratocephalus pseudolirellus

BDJ.11.e102057-treatment53.xml^{(1.3KB, xml)}

XML Treatment for Teratocephalus rugosus

BDJ.11.e102057-treatment54.xml^{(1.3KB, xml)}

XML Treatment for Cephalobidae

BDJ.11.e102057-treatment55.xml^{(1.2KB, xml)}

XML Treatment for Acrobeloides arctowskii

BDJ.11.e102057-treatment56.xml^{(1.3KB, xml)}

XML Treatment for Cervidellus cf. vexilliger

BDJ.11.e102057-treatment57.xml^{(1.4KB, xml)}

XML Treatment for Rhabditidae

BDJ.11.e102057-treatment58.xml^{(1.2KB, xml)}

XML Treatment for Cuticularia firmata

BDJ.11.e102057-treatment59.xml^{(1.3KB, xml)}

XML Treatment for Rhabditis krylovi

BDJ.11.e102057-treatment60.xml^{(1.3KB, xml)}

XML Treatment for Rhabditis marina -group

BDJ.11.e102057-treatment61.xml^{(1.4KB, xml)}

XML Treatment for Peloderidae

BDJ.11.e102057-treatment62.xml^{(1.2KB, xml)}

XML Treatment for Pelodera teres -group

BDJ.11.e102057-treatment63.xml^{(1.4KB, xml)}

XML Treatment for Pelodera strongyloides -group

BDJ.11.e102057-treatment64.xml^{(1.4KB, xml)}

XML Treatment for Pelodera parateres -group

BDJ.11.e102057-treatment65.xml^{(1.4KB, xml)}

XML Treatment for Mononchida

BDJ.11.e102057-treatment66.xml^{(1.2KB, xml)}

XML Treatment for Mononchidae

BDJ.11.e102057-treatment67.xml^{(1.2KB, xml)}

XML Treatment for Coomansus gerlachei

BDJ.11.e102057-treatment68.xml^{(2KB, xml)}

[B8452574] Adams B. J., Bardgett R. D., Ayres E., Wall D. H., Aislabie J., Bamforth S., Bargagli R., Cary C., Cavacini P., Connell L., Convey P., Fell J. W., Frati F., Hogg I. D., Newsham K. K., O'Donnell A., Russell N., Seppelt R. D., Stevens M. I. Diversity and distribution of Victoria Land biota. Soil Biology and Biochemistry. 2006;38:3003–3018. doi: 10.1016/j.soilbio.2006.04.030. [DOI] [Google Scholar]

[B8452599] Adams B. J., Wall D. H., Virginia R. A., Broos E., Knox M. A. Ecological biogeography of the terrestrial nematodes of Victoria Land, Antarctica. ZooKeys. 2014;419:29–71. doi: 10.3897/zookeys.419.7180. [DOI] [PMC free article] [PubMed] [Google Scholar]

[B9767231] Andrássy I. Revision of the order Monhysterida (Nematoda) inhabiting soil and waters. Opusculla Zoologica. 1981;17:13–47. [Google Scholar]

[B8453089] Andrássy I. Nematodes in the Sixth continent. Journal of Nematode Morphology and Systematics. 1998;1:107–186. [Google Scholar]

[B8811481] Andrássy I. Free-living nematodes of Hungary (Nematoda errantia), I. Pedozoologica Hungarica No. 3. Hungarian Natural History Museum; Budapest: 2005. 518. [Google Scholar]

[B8811489] Andrássy I. Free-living nematodes of Hungary (Nematoda errantia), II. Pedozoologica Hungarica, No. 4. Hungarian Natural History Museum; Budapest: 2007. 496. [Google Scholar]

[B8453138] Andrássy I., Gibson J. Nematodes from saline and freshwater lakes of the Vestfold Hills, East Antarctica, including the description of Hypodontolaimusantarcticus sp. n. Polar Biology. 2007;30:669–678. doi: 10.1007/s00300-006-0224-4. [DOI] [Google Scholar]

[B8811497] Andrássy I. Free-living nematodes of Hungary (Nematoda Errantia), III. Pedozoologica Hungarica, No 5. Hungarian Natural History Museum; Budapest: 2009. 608. [Google Scholar]

[B9755822] Ara Khanum Tabassum, Mehmood Nasir, Khatoon Nasira. Nematodes as biological indicators of soil quality in the agroecosystems. Nematodes - recent advances, management and new perspectives. IntechOpen. 2022 doi: 10.5772/intechopen.99745. [DOI]

[B9767240] Bastian H. Ch. Monograph on the Anguillulidae, or free nematoids, marine, land, and freshwater; with descriptions of 100 new species. Transactions of the Linnean Society of London. 1865;25:73–184. doi: 10.1111/j.1096-3642.1865.tb00179.x. [DOI] [Google Scholar]

[B9767258] Bütschli O. Beitrage zur Kenntnis der freilebenden Nematoden. Nova Acta Academiae Nat Curios. 1873;35(5):1–124. [Google Scholar]

[B8453202] Caldwell J. R. The Signy Island terrestrial reference sites: XIII. Population dynamics of the nematode fauna. British Antarctic Survey. 1981;54:33–46. [Google Scholar]

[B10411681] Carapelli Antonio, Convey Peter, Frati Francesco, Spinsanti Giacomo, Fanciulli Pietro P. Population genetics of three sympatric springtail species (Hexapoda: Collembola) from the South Shetland Islands: evidence for a common biogeographic pattern. Biological Journal of the Linnean Society. 2017;120(4):788–803. doi: 10.1093/biolinnean/blw004. [DOI] [Google Scholar]

[B9755772] Chauvin Camille, Trambolho Manon, Hedde Mickael, Makowski David, Cérémonie Hélène, Jimenez Anne, Villenave Cécile. Soil nematodes as indicators of heavy metal pollution: A meta-analysis. Open Journal of Soil Science. 2020;10(12):579–601. doi: 10.4236/ojss.2020.1012028. [DOI] [Google Scholar]

[B8453244] Chaves E. Mononchida (Nematoda) from Argentina. Nematologica. 1990;36:181–193. doi: 10.1163/002925990X00149. [DOI] [Google Scholar]

[B8453253] Chernov Y., Striganova R., Ananjeva I., Kuzmin L. In: In: Arkticheskie Tundry i Polyarnye Pustyni Taimyra. Aleksandrova V. D, Matveyeva N. V, editors. Nauka; 1979. Animal world of the polar desert at Cape Chelyuskin.35–49. Russian. [Google Scholar]

[B8453275] Chernov Y., Matveeva N., Makarova O. Polar deserts: At the limit of life. Priroda. 2011;9:31–43. Russian. [Google Scholar]

[B9853163] Chown Steven L., Brooks Cassandra M. The State and Future of Antarctic Environments in a Global Context. Annual Review of Environment and Resources. 2019;44(1):1–30. doi: 10.1146/annurev-environ-101718-033236. [DOI] [Google Scholar]

[B8453284] Chown S. L., Convey P. In: Biogeography: Trends in Antarctic terrestrial and limnetic ecosystems. Bergstom D. M., Convey P., Huiskes H. L., editors. Springer Dordrecht, 55–70.; 2006. Biogeography. [DOI] [Google Scholar]

[B8453297] Chown S. L., Convey P. Antarctic entomology. Annual Revue Entomology. 2016;61(1):119–37. doi: 10.1146/annur. [DOI] [PubMed] [Google Scholar]

[B9789690] Chwedorzewska K., Korczak−Abshire M., Olech M., Lityńska−Zając M., Augustyniuk−Kram A. Alien invertebrates transported accidentally to the Polish Antarctic Station in cargo and on fresh foods. Polish Polar Research. 2013;34(1):55–66. doi: 10.2478/popore-2013-0005. [DOI] [Google Scholar]

[B8453314] Clarke K. R., Gorley R. N. PRIMER v7: User Manual/Tutorial. PRIMER-E Plymouth; 2015. [Google Scholar]

[B10411718] Collins Gemma E., Young Monica R., Convey Peter, Chown Steven L., Cary S. Craig, Adams Byron J., Wall Diana H., Hogg Ian D. Biogeography and Genetic Diversity of Terrestrial Mites in the Ross Sea Region, Antarctica. Genes. 2023;14(3) doi: 10.3390/genes14030606. [DOI] [PMC free article] [PubMed] [Google Scholar]

[B9755702] Convey P. The influence of environmental characteristics on life history attributes of Antarctic terrestrial biota. Biological Reviews. 1996;71(2):191–225. doi: 10.1111/j.1469-185x.1996.tb00747.x. [DOI] [Google Scholar]

[B8453343] Convey P., Smith R. I.L>, Peat H. J., Pugh P. J.A. The terrestrial biota of Charcot Island, eastern Bellingshausen Sea, Antarctica: an example of extreme isolation. Antarctic Science. 2000;12:406–413. doi: 10.1017/S095410200000047X. [DOI] [Google Scholar]

[B9755666] Convey P., Wynn-Williams D. Antarctic soil nematode response to artificial climate amelioration. European Journal of Soil Biology. 2002;38:255–259. doi: 10.1016/s1164-5563(02)01155-x. [DOI] [Google Scholar]

[B9755884] Convey P, McInnes S J. Exceptional tardigrade-dominated ecosystems in Ellsworth Land, Antarctica. Ecology. 2005;86(2):519–527. doi: 10.1890/04-0684. [DOI] [Google Scholar]

[B8453322] Convey P. Antarctic terrestrial ecosystems: Responses to environmental change. Polarforschung. 2006;75:101–111. [Google Scholar]

[B9789822] Convey Peter. In: Non-native species in the Antarctic. Rogan-Finnemore M., editor. Proceedings. Christchurch: Gateway Antarctica; 2008. Non-native species in Antarctic terrestrial and freshwater environments: presence, sources, impacts and predictions.97-130 [Google Scholar]

[B8453331] Convey P., Gibson J., Hillenbrand D., Hodgson A., Pugh J. A., Smellie L., Stevens I. Antarctic terrestrial life - challenging the history of the frozen continent? Biological Reviews. 2008;83:103–117. doi: 10.1111/j.1469-185X.2008.00034.x. [DOI] [PubMed] [Google Scholar]

[B9789809] Convey P. In: Exploring the last continent: an introduction to Antarctica. Liggett Daniela, Storey Bryan, Cook Yvonne, Meduna Veronika., editors. Springer; Switzerland: 2015. Alien invasions. The impact of non-native species: changing the face of life on land in Antarctica?539-555. [DOI] [Google Scholar]

[B9755693] Convey P. Antarctic Ecosystems. Reference Module in Life Sciences. 2017 doi: 10.1016/b978-0-12-809633-8.02182-8. [DOI]

[B9755675] Convey P., Peck L. S. Antarctic environmental change and biological responses. Science Advances. 2019;5(11) doi: 10.1126/sciadv.aaz0888. [DOI] [PMC free article] [PubMed] [Google Scholar]

[B9788863] Convey P., Biersma E. M., Casanova-Katny A., Maturana C. S. In: Past Antarctica: Paleoclimatology and climate change. Oliva M., Ruiz-Fernandez J., editors. Elsevier; 2020. Refuges of Antarctic diversity.181-200. [DOI] [Google Scholar]

[B9853123] Courtright E. M., Wall D. H., Virginia R. A., Frisse L. M., Vida J. T., Thomas W. K. Nuclear and mitochondrial DNA sequence diversity in the Antarctic nematode Scottnema lindsayae. Journal of Nematology. 2000;32:143–153. [PMC free article] [PubMed] [Google Scholar]

[B8453363] Czechowski P., J Clarke L., Cooper A., I Stevens M. A primer to metabarcoding surveys of Antarctic terrestrial biodiversity. Antarctic Science. 2017;29:3–15. doi: 10.1017/S0954102016000389. [DOI] [Google Scholar]

[B9767267] de Man J. G. Die einheimischen, frei in der reinen Erde und im süßen Wasser lebende Nematoden monographisch bearbeitet. Vorläufiger Bericht und descriptiv-systematischer Theil. Tijdschrift der Nederlandische Dierkundige Vereeniging. 1880;5:1–104. [Google Scholar]

[B8453381] de Man J. G. Nematodes libres. Result. voyage S.Y Belgica, Zoology. 1904;55 [Google Scholar]

[B9755850] Du Preez G, Daneel M, De Goede R, Du Toit M J, Ferris H, Fourie H, Geisen S, Kakouli-Duarte T, Korthals G, Sánchez-Moreno S, Schmidt Jan H. Nematode-based indices in soil ecology: Application, utility, and future directions. Soil Biology and Biochemistry. 2022;169 doi: 10.1016/j.soilbio.2022.108640. [DOI] [Google Scholar]

[B9755741] Ebach M., Pugh P. J.A., Convey P. Surviving out in the cold: Antarctic endemic invertebrates and their refugia. http://www.jstor.org/stable/20488312. Journal of Biogeography. 2008;35(12):2176–2186. doi: 10.1111/j.1365-2699.2008.01953.x. [DOI] [Google Scholar]

[B8453390] Elshishka M., Lazarova S., Peneva V. Terrestrial nematodes of Livingston Island, maritime Antarctica. In: Pimpirev Ch. & Chipev N. (Eds). Bulgarian Antarctic Research. A Synthesis. "St Kliment Ohridski". 2015;(BN:978-954-07-3939-7):320–334.

[B8453409] Elshishka M., Lazarova S., Radoslavov G., Hristov P., Peneva V. New data on two remarkable antarctic species Amblydorylaimusisokaryon (Loof, 1975) Andrássy, 1998 and Pararhyssocolpusparadoxus (Loof, 1975) gen. n., comb. n. (Nematoda, Dorylaimida). ZooKeys. 2015;511:25–68. doi: 10.3897/zookeys.511.9793. [DOI] [PMC free article] [PubMed] [Google Scholar]

[B8453419] Elshishka M., Lazarova S., Radoslavov G., Hristov P., Peneva V. Biogeography and phylogenetic position of Enchodeloidessignyensis (Loof, 1975) gen. n. comb. n. from Maritime Antarctic (Nematoda, Nordiidae). ZooKeys. 2017;697:37–58. doi: 10.3897/zookeys.697.13770. [DOI] [PMC free article] [PubMed] [Google Scholar]

[B9755813] Ferris H., Bongers T., de Goede R. G.M. A framework for soil food web diagnostics: extension of the nematode faunal analysis concept. Applied Soil Ecology. 2001;18(1):13–29. doi: 10.1016/s0929-1393(01)00152-4. [DOI] [Google Scholar]

[B8453429] Freckman D. W., Virginia R. A. Low-diversity Antarctic soil nematode communities: distribution and response to disturbance. Ecology. 1997;78:363–369. doi: 10.1890/0012-9658. [DOI] [Google Scholar]

[B9755760] Gantait V. Diversity of nematodes in Antarctica under changing climatic conditions. Journal of Crop and Weed. 2014;10(2) [Google Scholar]

[B9755866] Greene S. W. Studies in Colobanthusquitensis (Kunth) Bartl. And Deschampsiaantarctica Desv. I Introduction. British Antarctic Survey Bulletin. 1970;23:19–24. [Google Scholar]

[B9767303] Holdgate M. W. Terrestrial Ecosystems in the Antarctic. Philosophical Transactions of the Royal Society B: Biological Sciences. 1977;279(963):5–25. doi: 10.1098/rstb.1977.0068. [DOI] [Google Scholar]

[B8453496] Holovachov O., Bostrom S. Description of Acrobeloidesarctowskii sp. n. (Rhabditida: Cephalobidae) from King George Island, Antarctica. Russian Journal of Nematology. 2006;14:51–56. [Google Scholar]

[B9767222] Holovachov O. Nematodes from terrestrial and freshwater habitats in the Arctic. Biodiversity Data Journal. 2014;2:1165. doi: 10.3897/BDJ.2.e1165. [DOI] [PMC free article] [PubMed] [Google Scholar]

[B8453483] Holovachov O. In: Handbook of Zoology. Gastrotricha, Cycloneuralia, Gnathifera. Volume 2: Nematoda. Schmidt-Rhaesa Andreas., editor. De Gruyter; 2014. Order Plectida Gadea, 1973. [DOI] [Google Scholar]

[B9789681] Hughes K. A., Convey P., Maslen N. R., Smith R. I. L. Accidental transfer of non-native soil organisms into Antarctica on construction vehicles. Biological Invasions. 2010;12(4):875–891. doi: 10.1007/s10530-009-9508-2. [DOI] [Google Scholar]

[B9789749] Hughes K. A., Convey Peter, Pertierra Luis R., Vega Greta C., Aragón Pedro, Olalla-Tárraga Miguel Á. Human-mediated dispersal of terrestrial species between Antarctic biogeographic regions: A preliminary risk assessment. Journal of Environmental Management. 2019;232:73–89. doi: 10.1016/j.jenvman.2018.10.095. [DOI] [PubMed] [Google Scholar]

[B9789711] Hughes K. A., Pescott O. L., Peyton J., Adriaens T., Cottier‐Cook E. J., Key G., Rabitsch W., Tricarico E., Barnes D. K. A., Baxter N., Belchier M., Blake D., Convey P., Dawson W., Frohlich D., Gardiner L. M., González‐Moreno P., James R., Malumphy C., Martin S., Martinou A. F., Minchin D., Monaco A., Moore N., Morley S. A., Ross K., Shanklin J., Turvey K., Vaughan D., Vaux A. G. C., Werenkraut V., Winfield I. J., Roy H. E. Invasive non‐native species likely to threaten biodiversity and ecosystems in the Antarctic Peninsula region. Global Change Biology. 2020;26(4):2702–2716. doi: 10.1111/gcb.14938. [DOI] [PMC free article] [PubMed] [Google Scholar]

[B10411691] Iakovenko N. S., Smykla J., Convey P., Kašparová E., Kozeretska I. A., Trokhymets V., Dykyy I., Plewka M., Devetter M., Duriš Z., Janko K. Antarctic bdelloid rotifers: diversity, endemism and evolution. Hydrobiologia. 2015;761(1):5–43. doi: 10.1007/s10750-015-2463-2. [DOI] [Google Scholar]

[B8453522] Jairajpuri M. S., Khan W. U. Studies on Mononchida of India. IX. Further division of the genus Clarkus Jairajpuri, 1970 with proposai of Coomansus n. gen. and descriptions of two new species. Nematologica. 1977;23:89–96. doi: 10.1163/187529270x00153. [DOI] [Google Scholar]

[B8453531] Janiec K. The comparison of freshwater invertebrates of Spitsbergen (Arctic) and King George Island (Antarctic) Polish Polar Research. 1996;17:173–202. [Google Scholar]

[B8453540] Jiménez Guirado D., Wouts W. M., Bello A. Morphometric studies on Coomansus Jairajpuri & Khan, 1977 (Nematoda: Mononchida) and descriptions of two new species from the Subantarctic region. Fundamental and Applied Nematology. 1998;21:527–546. [Google Scholar]

[B8453549] Kagoshima H., Maslen R., Kito K., Imura S., Niki H., Convey P. Integrated taxonomy combining morphological and molecular biological analyses of soil nematodes from maritime Antarctica. Polar Biology. 2019;42:877–887. doi: 10.1007/s00300-019-02482-8. [DOI] [Google Scholar]

[B9767285] Kirjanova E. S. Antarkticheskie predstaviteli presnovodnykh nematod roda Plectus Bastian (Nematodes Plectidae. Information Bulletin of the Soviet Antarctic Expedition. 1958;3:101–103. [Google Scholar]

[B8453560] Kito K. Taxonomical and ecological studies of free-living nematodes carried out in Antarctica as a cooperative research program of NIPR. Sapporo Medical Journal. 2009;78:13–18. [Google Scholar]

[B9789672] Lee J. E., Chown S. L. Breaching the dispersal barrier to invasion: quantification and management. Ecological Applications. 2009;19(7):1944–1959. doi: 10.1890/08-2157.1. [DOI] [PubMed] [Google Scholar]

[B9755630] Longton R. E. Vegetation ecology and classification in the Antarctic zone. Canadian Journal of Botany. 1979;57(20):2264–2278. doi: 10.1139/b79-273. [DOI] [Google Scholar]

[B8453581] Loof P. A.A. Dorylaimoidea from some subantarctic islands. Nematologica. 1975;21:219–255. doi: 10.1163/187529275X00581. [DOI] [Google Scholar]

[B8453599] Maslen N. R. Six new nematode species from the maritime Antarctic. Nematologica. 1979;25(3):288–308. doi: 10.1163/187529279x00028. [DOI] [Google Scholar]

[B8453608] Maslen N. R. Additions to the nematode fauna of the Antarctic Region with keys to taxa. British Antarctic Survey Bulletin. 1979;49:207–229. [Google Scholar]

[B8453617] Maslen N. R. The Signy Island terrestrial reference sites: XII. Population ecology of nematodes with additions to the fauna. British Antarctic Survey Bulletin. 1981;53:57–75. [Google Scholar]

[B8453626] Maslen N. R., Convey P. Nematode diversity and distribution in the southern maritime Antarctic - clues to history? Soil Biology and Biochemistry. 2006;38:3141–3151. doi: 10.1016/j.soilbio.2005.12.007. [DOI] [Google Scholar]

[B8453635] Nedelchev S., Peneva V. Description of three new species genus Mesodorylaimus Andrássy 1959 (Nematoda, Dorylaimidae) in Livingston Island, Antarctic a notes M.imperator Loof 1975. Russian Journal of Nematology. 2000;8:161–172. [Google Scholar]

[B8453644] Nedelchev S., Peneva V. Description of the male of Mesodorylaimuschipevi Nedelchev & Peneva, 2000 (Nematoda: Dorylaimidae) from Livingston Island, Antarctica. Russian Journal of Nematology. 2007;15:75–77. [Google Scholar]

[B9755730] Neher D A. Role of nematodes in soil health and their use as indicators. Journal of nematology. 2001;33(4):161–8. [PMC free article] [PubMed] [Google Scholar]

[B9755721] Neher D. A. Ecology of plant and free-living nematodes in natural and agricultural coil. Annual Review of Phytopathology. 2010;48(1):371–394. doi: 10.1146/annurev-phyto-073009-114439. [DOI] [PubMed] [Google Scholar]

[B9853114] Newman Louise, Convey P, Gibson JAE, Linse K. Antarctic Paleobiology: Glacial refugia and constraints on past ice-sheet reconstructions. PAGES news. 2009;17(1):22–24. doi: 10.22498/pages.17.1.22. [DOI] [Google Scholar]

[B9765874] Newsham K., Hall R., Maslen N. R. Experimental warming of bryophytes increases the population density of the nematode Plectusbelgicae in maritime Antarctica. Antarctic Science. 2020;33(2):165–173. doi: 10.1017/s0954102020000528. [DOI] [Google Scholar]

[B8453653] Nielsen U. N., Wall D. H., Adams B. J., Virginia R. A. Antarctic nematode communities: observed and predicted responses to climate change. Polar Biology. 2011;34:1701–1711. doi: 10.1007/s00300-011-1021-2. [DOI] [Google Scholar]

[B9789700] Nielsen U. N., Wall D. H., Li G., Toro M., Adams B. J., Virginia R. A. Nematode communities of Byers Peninsula, Livingston Island, maritime Antarctica. Antarctic Science. 2011;23(4):349–357. doi: 10.1017/s0954102011000174. [DOI] [Google Scholar]

[B9755875] Nielsen U. N., Wall D. H. The future of soil invertebrate communities in polar regions: different climate change responses in the Arctic and Antarctic? Ecology Letters. 2013;16(3):409–419. doi: 10.1111/ele.12058. [DOI] [PubMed] [Google Scholar]

[B10411731] Ochyra R. The moss flora of King George Island, Antarctica. Polish Academy of Sciences; 1998. [Google Scholar]

[B8453671] Peneva V., Chipev N., Nedelchev S. Prionchuluspunctatus Cobb, 1917, a new record from Patagonia (Chile), with notes on other mononchids from Antarctic Regions. Bulgarian Antarctic Research Life Sciences. 1996:93–101.

[B8453662] Peneva V., Chipev N. Laimaphelenchushelicosoma (Maslen, 1979) n. comb. (Nematoda: Aphelenchida) from Livingston Island. In: Golemansky V, Chipev N (Eds) Bulgarian Antarctic Research. Life Sciences. Pensoft. Sofia - Moscow. 1999;2:57–61. [Google Scholar]

[B8453680] Peneva V., Lazarova S., Chipev N. In: Bulgarian Antarctic Research. Life Sciences. Golemansky V., Chipev N., editors. Vol.3. Pensoft; Sofia-Moscow: 2002. Description of the male of Enchodelus (Rotundus) signyensis Loof, 1975 (Nematoda, Nordiidae) from Livingston Island, Antarctica, and notes on its morphology and distribution.83-90 [Google Scholar]

[B9755893] Peneva V., Lazarova S., Elshishka M., Makarova O., Penev L. In: Species and communities in extreme environment. Golovatch S. I., Makarova O. L., Babenko A. B., Penev L. D., editors. Pensoft Publishers & KMK Scientific Press; Sofia - Moscow: 2009. Nematode assemblages of hair-grass (Deschampsia spp.) microhabitats from polar and alpine deserts in Arctic and Antaractic.419-438 [Google Scholar]

[B8453693] Pickup J. Ecophysiological studies of terrestrial free-living nematodes of Signy Island. British Antarctic Survey Bulletin. 1988;81:77–81. [Google Scholar]

[B8453702] Pickup J. Seasonal variation in the cold-hardiness of a free-living predatory antarctic nematode, Coomansusgerlachei (Mononchidae) Polar Biology. 1990;10:307–315. doi: 10.2307/2389345. [DOI] [Google Scholar]

[B8453728] Russell D. J., Hohberg K., Potapov M., Brückner A., Otte V., Christian A. Native terrestrial invertebrate fauna from the northern Antarctic Peninsula: new records, state of current knowledge and ecological preferences - Summary of a German federal study. Soil Organisms. 2014;86:1–58. [Google Scholar]

[B8453739] Shishida Y., Ohyama Y. A note on the terrestrial nematodes around Palmer Station, Antarctica (Extend abstract. Proceeding of the NIPR Symposium on Polar Biology. 1989;2:223–224. [Google Scholar]

[B10411707] Short K. A., Sands C. J., McInnes S. J., Pisani D., Stevens M. I., Convey P. An ancient, Antarctic-specific species complex: large divergences between multiple Antarctic lineages of the tardigrade genus Mesobiotus. Molecular Phylogenetics and Evolution. 2022;170 doi: 10.1016/j.ympev.2022.107429. [DOI] [PubMed] [Google Scholar]

[B9755641] Smith R. I.L. In: Antarctic ecology. Laws R M, editor. Vol. 1. Academic Press; 1984. Terrestrial plant biology of the sub-Antarctic and Antarctic.61-162 [Google Scholar]

[B8453748] Spaull V. W. Antarctenchushooperi, gen., n. sp. (Nematoda: Dolichodoridae) from Signy Island, South Orkney Islands, with the erection of a new subfamily. Nematologica. 1972;18:353–9. doi: 10.1163/187529272X00629. [DOI] [Google Scholar]

[B8453766] Spaull V. W. Distribution of soil nematodes in the maritime Antarctic. British Antarctic Survey Bulletin. 1973;37:1–6. [Google Scholar]

[B8453775] Spaull V. W. Qualitative and quantitative distribution of soil nematodes of Signy Island, South Orkney Islands. British Antarctic Survey Bulletin. 1973;(33-34):177–184.

[B8453784] Spaull V. W. Distribution of nematode feeding group at Signy Island, South Orkney Islands, with an estimate of their biomass and oxygen consumption. British Antarctic Survey Bulletin. 1973;37:21–32. [Google Scholar]

[B8453802] Spaull V. W. Observations on Coomansusgerlachei (de Man) (Nematoda: Mononchidae), a predacious nematode from the Antarctic. British Antarctic Survey Bulletin. 1981;(53):195–200.

[B9731548] Stevens M. I., Mackintosh A. N. Location, location, location: survival of Antarctic biota requires the best real estate. Biological Letters. 2023;19:20220590. doi: 10.1098/rsbl.2022.0590. [DOI] [PMC free article] [PubMed] [Google Scholar]

[B9755784] Taylor Lois S., Phillips Gary, Bernard Ernest C., DeBruyn Jennifer M. Soil nematode functional diversity, successional patterns, and indicator taxa associated with vertebrate decomposition hotspots. PLOS One. 2020;15(11) doi: 10.1371/journal.pone.0241777. [DOI] [PMC free article] [PubMed] [Google Scholar]

[B9767312] Tilbrook P. J. The Signy Island terrestrial reference sites: 1. An introduction. British Antarctic Survey Bulletin. 1973;33 & 34:65–76. [Google Scholar]

[B9755711] Treonis A. M., Wall D. Soil nematodes and desiccation survival in the extreme arid environment of the Antarctic dry valleys. Integrative and Comparative Biology. 2005;45(5):741–750. doi: 10.1093/icb/45.5.741. [DOI] [PubMed] [Google Scholar]

[B8453811] Tsalolikhin S. J. Rare and new nematode species from Antarctica. Trudi Zoologicheskogo Instituta Akademii Nauk, Leningrad. 1989;194:96–101. Russian. [Google Scholar]

[B9853039] van den Hoogen Johan, Geisen Stefan, Routh Devin, Ferris Howard, Traunspurger Walter, Wardle David A., de Goede Ron G. M., Adams Byron J., Ahmad Wasim, Andriuzzi Walter S., Bardgett Richard D., Bonkowski Michael, Campos-Herrera Raquel, Cares Juvenil E., Caruso Tancredi, de Brito Caixeta Larissa, Chen Xiaoyun, Costa Sofia R., Creamer Rachel, Mauro da Cunha Castro José, Dam Marie, Djigal Djibril, Escuer Miguel, Griffiths Bryan S., Gutiérrez Carmen, Hohberg Karin, Kalinkina Daria, Kardol Paul, Kergunteuil Alan, Korthals Gerard, Krashevska Valentyna, Kudrin Alexey A., Li Qi, Liang Wenju, Magilton Matthew, Marais Mariette, Martín José Antonio Rodríguez, Matveeva Elizaveta, Mayad El Hassan, Mulder Christian, Mullin Peter, Neilson Roy, Nguyen T. A. Duong, Nielsen Uffe N., Okada Hiroaki, Rius Juan Emilio Palomares, Pan Kaiwen, Peneva Vlada, Pellissier Loïc, Carlos Pereira da Silva Julio, Pitteloud Camille, Powers Thomas O., Powers Kirsten, Quist Casper W., Rasmann Sergio, Moreno Sara Sánchez, Scheu Stefan, Setälä Heikki, Sushchuk Anna, Tiunov Alexei V., Trap Jean, van der Putten Wim, Vestergård Mette, Villenave Cecile, Waeyenberge Lieven, Wall Diana H., Wilschut Rutger, Wright Daniel G., Yang Jiue-in, Crowther Thomas Ward. Soil nematode abundance and functional group composition at a global scale. Nature. 2019;572(7768):194–198. doi: 10.1038/s41586-019-1418-6. [DOI] [PubMed] [Google Scholar]

[B8453865] Velasco-Castrillón A., Stevens M. Morphological and molecular diversity at a regional scale: A step closer to understanding Antarctic nematode biogeography. Soil Biology & Biochemistry. 2014;70:272–284. doi: 10.1016/j.soilbio.2013.12.016. [DOI] [Google Scholar]

[B9853136] Velasco-Castrillón Alejandro, Gibson John A. E., Stevens Mark I. A review of current Antarctic limno-terrestrial microfauna. Polar Biology. 2014;37(10):1517–1531. doi: 10.1007/s00300-014-1544-4. [DOI] [Google Scholar]

[B8453847] Velasco-Castrillón A., Page T. J., Gibson J. A.E., Stevens M. I. Surprisingly high levels of biodiversity and endemism amongst Antarctic rotifers uncovered with mitochondrial DNA. Biodiversity. 2014;15:130–142. doi: 10.1080/14888386.2014.930717. [DOI] [Google Scholar]

[B9853145] Velasco-Castrillón Alejandro, Hawes Ian, Stevens Mark I. 100 years on: a re-evaluation of the first discovery of microfauna from Ross Island, Antarctica. Antarctic Science. 2018;30(4):209–219. doi: 10.1017/s095410201800007x. [DOI] [Google Scholar]

[B8453874] Wharton D. A., Block W. Freezing tolerance in some Antarctic nematodes. Functional Ecology. 1993;7:578–584. doi: 10.2307/2390134. [DOI] [Google Scholar]

[B9755657] Wharton D. A. Cold tolerance strategies in nematodes. Biological Reviews. 1995;70(1):161–185. doi: 10.1111/j.1469-185x.1995.tb01442.x. [DOI] [PubMed] [Google Scholar]

[B9767276] Yeates G. W. Two Terrestrial Nematodes from the McMurdo Sound Region Antarctica, with a note on Anaplectusarenicola Killick, 1964. Journal of Helminthology. 1970;44:27–34. doi: 10.1017/S0022149X00021416. [DOI] [Google Scholar]

PERMALINK

Terrestrial nematodes from the Maritime Antarctic

Milka Elshishka

Aleksandar Mladenov

Stela Lazarova

Vlada Peneva

Abstract

Background

New information

Introduction

Materials and methods

Checklists

Checklist of terrestrial nematodes from the Maritime Antarctic

Dorylaimida

Nordiidae

Enchodeloides signyensis

Qudsianematidae

Eudorylaimus coniceps

Eudorylaimus pseudocarteri

Eudorylaimus spaulli

Eudorylaimus verrucosus

Eudorylaimus cf. carteri

Pararhyssocolpidae

Pararhyssocolpus paradoxus

Dorylaimidae

Calcaridorylaimus signatus

Mesodorylaimus antarcticus

Mesodorylaimus chipevi

Mesodorylaimus imperator

Mesodorylaimus masleni

Aporcelaimidae

Amblydorylaimus isokaryon

Aphelenchida

Aphelenchoididae

Aphelenchoides haguei

Aphelenchoides vaughani

Laimaphelenchus helicosoma

Alaimida

Amphidelidae

Paramphidelus antarcticus

Monhysterida

Monhysteridae

Eumonhystera filiformis

Eumonhystera vulgaris

Geomonhystera villosa

Plectida

Plectidae

Plectus antarcticus

Plectus cf. antarcticus

Plectus belgicae

Plectus cf. belgicae

Plectus insolens

Plectus tolerans

Plectus cf. tolerans

Plectus meridianus

Plectus cf. meridianus

Plectus armatus

Tylenchida

Psilenchidae

Antarctenchus hooperi

Anguinidae

Ditylenchus parcevivens

Rhabditida

Teratocephalidae

Teratocephalus tilbrooki

Teratocephalus pseudolirellus

Teratocephalus rugosus

Cephalobidae

Acrobeloides arctowskii

Cervidellus cf. vexilliger

Rhabditidae

Cuticularia firmata

Rhabditis krylovi

Rhabditis marina -group

Peloderidae

Pelodera teres -group

Pelodera strongyloides -group

Pelodera parateres -group

Mononchida

Mononchidae