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

Table 1.

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

Male
Characters Holotype Paratypes Hermaphrodite (1st Gen) paratypes Female (2nd Gen) paratypes Infective juvenile paratypes
n 1 20 20 20 25
Body length (L) 760 769 ± 60 (652-863) 3295 ± 286 (2907-4123) 1366 ± 123 (1131-1608) 544 ± 29 (496-591)
a (L/BD) 20.3 17 ± 1.5 (15-21) 14.1 ± 1.1 (11.7-16.1) 18 ± 1.4 (15-20) 24 ± 3.0 (20-29)
b (L/NL) 7.8 8.1 ± 1.0 (5.8-9.7) 23 ± 1.8 (21-27) 11.4 ± 1.2 (9.0-13.6) 4.7 ± 0.4 (4.1-5.4)
c (L/T) 26.2 31 ± 3.6 (23-36) 42 ± 5.7 (34-51) 20 ± 2.2 (16-24) 8.2 ± 1.0 (7.6-8.6)
c’ (T/ABW) 1.1 1.4 ± 0.2 (0.6-1.7) 2.2 ± 0.3 (1.7-2.6) 2.8 ± 0.5 (1.9-3.6) 4.6 ± 0.8 (3.4-5.8)
V (VA/L × 100) 48 ± 2.5 (45-55) 48 ± 2.3 (41-51)
Max. Body Width (MBD) 37.5 44 ± 3.0 (40-51) 233 ± 17 (209-274) 77 ± 4.0 (68-83) 23 ± 2.7 (18-27)
Lip region width 6.5 7.2 ± 0.8 (5.7-8.4) 12.4 ± 0.8 (11.0-14.0) 10.3 ± 0.9 (8.8-12.2)
Stoma length 9.5 11.1 ± 1.6 (8.7-13.9) 14.9 ± 1.4 (13-18) 13.6 ± 1.8 (10.4-16.0) 13.8 ± 1.2 (12.1-16.0)
Bulb length (BL) 18.5 20 ± 1.8 (18-25) 35 ± 3.6 (29-42) 27 ± 2 (23-30) 13.8 ± 1.8 (11.0-19.0)
Pharynx length (PL) 95.2 84 ± 7.1 (74-107) 128 ± 6.3 (118-142) 107 ± 6.9 (91-120) 102 ± 7.0 (91-115)
Nerve ring – ant. end (NR) 68 63 ± 5.2 (56-74) 93 ± 7.5 (78-108) 81 ± 6.4 (69-97) 55 ± 3.6 (52-64)
Excretory pore– ant. end (EP) 84.3 81 ± 10.1 (61-109) 121 ± 11 (106-153) 111 ± 10.8 (92-129) 78 ± 3.4 (70-89)
Neck length (Stoma+Pharynx, NL) 98 96 ± 7.3 (84-117) 143 ± 6.3 (134-159) 120 ± 6.0 (107-132) 115 ± 7.3 (103-131)
Body width at neck base 36 34 ± 1.9 (30-37) 119 ± 8.9 (101-138) 58 ± 4.3 (50-66) 18 ± 3.0 (15-24)
Vagina length 28 ± 4.0 (20-38) 19.2 ± 2.9 (15-26)
Body width at vulva 240 ± 21 (199-278) 78 ± 3.8 (72-85)
Vulva – ant. end (VA) 1581 ± 151 (1369-1882) 655 ± 47 (572-706)
Vulva – post. End (PV) 1713 ± 178 (1453-2241) 710 ± 89 (559-949)
Rectum length 36 ± 4.6 (29-49) 30 ± 3.8 (24-35) 8.5 ± 1.9 (6.1-13.7)
Anal body diam. (ABD) 26.1 18 ± 2.4 (15-25) 37 ± 5.5 (29-51) 25 ± 4.5 (18-34) 12.4 ± 1.8 (9.2-16.0)
Tail with sheath length (T) 56 ± 4.9 (49-64)
Tail without sheath length 29 25 ± 3.2 (21-29) 80 ± 7.9 (63-98) 68 ± 6.5 (62-88) 30.4 ± 4.5 (22-39)
Spicule length (SL) 49 43 ± 4.1 (34-50)
Gubernaculum length (GL) 20.2 18 ± 1.5 (15-21)
Stoma length/lip region width 1.5 1.2 ± 0.2 (1.0-1.6) 1.3 ± 0.1 (1.1-1.6)
Nerve ring % (NR/NL × 100) 69.4 67 ± 4.4 (58-75) 65 ± 5.0 (56-78) 67 ± 3.9 (61-75)
Excretory pore % (EP/NL × 100) 86 85 ± 8.5 (61-97) 85 ± 8.3 (67-103) 92 ± 7.6 (74-104)
Rectum % (R/ABD × 100) 90 ± 10 (80-130) 128 ± 29 (90-181)
D % (EP /PL × 100) 88.5 96 ± 9.2 (69-111) 95 ± 9.3 (74-114) 104 ± 9.3 (82-118) 78 ± 7.6 (66-98)
E % (EP/T × 100) 290 325 ± 49 (232-413) 153 ± 24 (120-205) 164 ± 23 (111-203) 139 ± 13.4 (112-168)
SW % (SL/ABD × 100) 242 243 ± 47 (150-306)
GS % (GL/SL × 100) 41.2 42 ± 5.2 (35-57)
H % (H/T × 100 46 ± 4.0 (37–55)