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) |