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. 2021 Nov 11;53:e2021-89. doi: 10.21307/jofnem-2021-089

Table 2.

Morphometrics of infective juveniles and adult generations of Heterorhabditis zacatecana n. sp.

Male
Characters Holotype Paratypes Hermaphrodite (1st Gen) paratypes Female (2nd Gen) paratypes Infective juvenile paratypes
n 1 20 22 22 25
Body length (L) 808.1 861 ± 29 (811-914) 5127 ± 494 (4408-6179) 2244 ± 203 (1954-2798) 539 ± 21 (493-578)
a (L/BD) 19.0 18 ± 1.6 (15-22) 16 ± 2.0 (13-20) 12.3 ± 1.2 (10.5-15.0) 22 ± 1.2 (19-24)
b (L/NL) 8.1 9.1 ± 1.1 (7.6-12) 26 ± 4.3 (20-34) 18 ± 1.8 (16-21) 5.0 ± 0.4 (4.4-5.9)
c (L/T) 28.9 34 ± 4.2 (26-43) 70 ± 10.4 (52-90) 39 ± 7.4 (31-63) 9.4 ± 0.6 (8.2-10.5)
c’ (T/ABW) 1.4 1.6 ± 0.3 (1.2-2.5) 1.6 ± 0.3 (1.2-2.4) 1.7 ± 0.2 (1.3-2.0) 5.3 ± 0.6 (4.3-6.7)
V (VA/L × 100) 48 ± 4.3 (36-57) 53 ± 4.2 (43-61)
Max. Body Width (MBD) 42.5 48 ± 3.6 (41-56) 319 ± 41 (235-385) 183 ± 23 (160-228) 24 ± 0.9 (23-27)
Lip region width 6.2 7.4 ± 0.7 (6.2-8.8) 11.7 ± 2.4 (9.2-19.2) 10.1 ± 1.0 (7.7-11.4) 4.0 ± 0.5 (3.2-5.2)
Stoma length 10 9.3 ± 1.0 (6.3-11) 19 ± 2.0 (14-23) 11.5 ± 1.7 (8.0-15.2) 13.5 ± 1.0 (12.0-15.3)
Bulb length (BL) 20.2 22 ± 2.4 (19-28) 40 ± 4.6 (28-49) 30 ± 2.6 (28-38) 20 ± 1.4 (17.1-23.0)
Pharynx length (PL) 95.2 86 ± 9.8 (57-100) 182 ± 23 (155-211) 113 ± 9.5 (101-133) 95 ± 7.2 (82-111)
Nerve ring – ant. end (NR) 65.4 66 ± 5.3 (60-78) 131 ± 22 (96-169) 83 ± 7.3 (71-96) 81 ± 6.3 (69-72)
Excretory pore– ant. end (EP) 96.2 93 ± 9.6 (77-109) 150 ± 24 (108-190) 113 ± 11 (100-133) 89 ± 6.8 (72-99)
Neck length (Stoma+Pharynx, NL) 99.3 96 ± 9.6 (71-108) 201 ± 21 (174-231) 124 ± 10 (112-148) 109 ± 6.9 (96-124)
Body width at neck base 34.5 36 ± 2.3 (31-40) 167 ± 13 (133-188) 95 ± 13.9 (74-121) 23 ± 1.3 (19-26)
Vagina length 31 ± 4.0 (24-36) 25 ± 6.4 (17-42)
Body width at vulva 331 ± 33 (257-379) 185 ± 27 (153-230)
Vulva – ant. end (VA) 2470 ± 279 (1959-3038) 1182 ± 129 (910-1397)
Vulva – post. end (PV) 2657 ± 279 (1990-3938) 1062 ± 147 (860-1455)
Rectum length 36 ± 4.6 (30-41) 27 ± 4.1 (19-39)
Anal body diam. (ABD) 19.6 17 ± 2.3 (13-22) 47 ± 8.1 (34-58) 35 ± 3.2 (31-41) 11.1 ± 1.3 (8.6-14.1)
Tail with sheath length (T) 58 ± 3.1 (52-63)
Tail without sheath length 28 26 ± 3.3 (21-33) 74 ± 8.3 (63-87) 58 ± 8.2 (45-75) 29.4 ± 2.5 (25-34)
Spicule length (SL) 54.1 45 ± 3.7 (38-55)
Gubernaculum length (GL) 18.7 20 ± 2.1 (15-25)
Stoma length/lip region width 1.6 1.6 ± 0.3 (1.1-2.1) 1.2 ± 0.2 (0.8-1.7)
Nerve ring % (NR/NL × 100) 65.9 69 ± 9.9 (61-96) 65 ± 9.4 (49-86) 67 ± 4.8 (60-82)
Excretory pore % (EP/NL × 100) 96.9 98 ± 17 (78-134) 75 ± 11 (51-95) 67 ± 4.8 (60-82)
Rectum % (R/ABD × 100) 79 ± 17 (54-112) 76 ± 13 (52-106)
D % (EP /NL × 100) 101.05 109 ± 21 (83-156) 75 ± 11 (55-95) 92 ± 7.9 (80-111) 94 ± 12 (68-120)
E % (EP/T × 100) 343.6 365 ± 68 (236-503) 206 ± 46 (145-303) 197 ± 27 (145-246) 154 ± 14 (128-184)
SW % (SL/ABD × 100) 276 270 ± 50 (170-320)
GS % (GL/SL × 100) 34.56 40 ± 10 (40-60)
H % (H/T × 100 47 ± 5.6 (35-56)