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. 2021 Dec 17;7(1):66–67. doi: 10.1080/23802359.2021.2009383

The complete mitochondrial genome of Fopius arisanus (Sonan 1932) (Hymenoptera: Braconidae)

Pumo Cai a,b,c,d, Deqing Yang a,b,d, Xuxing Hao b,c,d, Guoqing Yue b,c,d, Lili Jiang b,c,d, Kang Xiao b,c,d, Pingfan Jia b,c,d, Jianquan Yang b,c,d, Qing’e Ji b,c,d,✉, Jia Lin b,c,d,✉
PMCID: PMC8725937  PMID: 34993312

Abstract

Fopius arisanus (Sonan, 1932), an important egg parasitoid of several notorious tephritid pests, plays a key role in biological control programs. In the present study, the whole mitochondrial genome of F. arisanus was sequenced and characterized. The mitogenome of F. arisanus is 16,425 bp in length with 14.94% GC content, and contains 13 protein-coding genes (PCGs), 22 transfer RNA genes (tRNAs), and two ribosomal RNA genes (rRNAs). The phylogenetic trees demonstrated that F. arisanus is sister group to Psyttalia concolor, P. humilis, P. lounsburyi and Diachasmimorpha longicaudata.

Keywords: Fopius arisanus, tephritid, mitochondrial genome, phylogenetic tree

Fopius arisanus (Sonan, 1932) (Hymenoptera: Braconidae) parasitizes more than 40 species of tephritid pest (Cai et al. 2017). Owing to its unique characteristics for parasitizing eggs, F. arisanus has become a key component of biological control programs that aim to suppress tephtirid pest populations and therefore reduce economic loss (Vargas et al. 2001). However, to date, there are few studies detailing its genome information. Hence, in this study, we determined the complete mitochondrial genome of F. arisanus and analyzed the evolutionary relationship between F. arisanus and other braconid wasps.

The samples were obtained from Fujian Agriculture and Forestry University (26.084220°N, 119.231164°E), Fuzhou City, Fujian Province, China. The voucher specimens (20190808FA) were deposited at the Fujian Agriculture and Forestry University (URL: http://zbxy.fafu.edu.cn; contact: Qinge Ji, jiqinge@fafu.edu.cn). Total DNA was extracted using CTAB extraction method (Vanzyme, Nanjing, China) and a 400-bp insert library was constructed. An Illumina Novaseq 6000 platform in 150 bp paired-end read mode was used to sequence the constructed library. Filtering of raw data was performed in fastp v.0.20.0 (Chen et al. 2018) resulting in 21,648,152 clean reads, which were then assembled by SPAdes v.3.9.0 software (Bankevich et al. 2012). Annotation of the assembled sequence was performed using MITOS web server (Bernt et al. 2013).

The complete mitochondrial genome of F. arisanus is 16,425 bp in length, containing 13 protein-coding genes (PCGs), two ribosomal RNA genes (rRNAs), 22 transfer RNA genes (tRNAs), and a non-coding region (control region). The mitogenome comprises 39.37% A, 9.14% G, 5.8% C, and 45.68% T, with a significant A + T (85.06%) bias. For the PCGs, six genes (cox2, atp8, nad2, nad4l, nad5, nad6) had a start codon of ATT, four (cox1, cox3, atp6, cob) had ATG, and three had ATA (nad1, nad3, nad4). All PCGs contained the stop codon TAA, except for nad3 which had TAG.

We analyzed the nucleotide sequences of PCGs using the Maximum-Likelihood (ML) and Bayesian Inference (BI) approaches to understand the phylogenetic relationship of F. arisanus with 10 other species and to estimate the phylogenetic position of F. arisanus. Two species respectively from Sigalphinae and Pselaphaninae were used as outgroups (Lyu et al. 2020). Phylogenetic analyses were performed with Bayesian inference in MrBayes 3.2.3 (Ronquist et al. 2012) and maximum likelihood in RAxML 8.2.10 (Stamatakis 2014). The phylogenetic trees showed that F. arisanus clustered with Psyttalia concolor, P. humilis, P. lounsburyi and Diachasmimorpha longicaudata as a separated clade. To date, studies that relate to the genome analysis of F. arisanus are limited, and therefore we hope that our data provides valuable information for further studies (Figure 1).

Figure 1.

Figure 1.

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Phylogenetic relationships among subfamilies of the Braconidae inferred from nucleotides of 13 PCGs using Bayesian and maximum-likelihood (ML) methods (GenBank accession numbers provided). The Bayesian posterior probabilities (PP) and bootstrap support (BS) are marked besides the nodes.

Funding Statement

This study was funded by the Industry University Research Project of Fujian Science and Technology Department [2019N5003], the Advanced Talents Introduction Project of Wuyi University [YJ201910], the Science & Technology Innovation Platform Construction Project of Fujian Province [2018N2004], and the Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fujian Agriculture and Forestry University (Keylab2020-02).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

The complete mitochondrial genome sequence of F. arisanus is deposited in the GenBank database under the accession number MZ128286. The associated BioProject, SRA, and Bio-Sample numbers are PRJNA734964, SRS9131624, and SAMN19551218, respectively The Web link is https://www.ncbi.nlm.nih.gov/

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Associated Data

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

Data Availability Statement

The complete mitochondrial genome sequence of F. arisanus is deposited in the GenBank database under the accession number MZ128286. The associated BioProject, SRA, and Bio-Sample numbers are PRJNA734964, SRS9131624, and SAMN19551218, respectively The Web link is https://www.ncbi.nlm.nih.gov/

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