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) |