Table 1 Morphometric data for Heterorhabditis bacteriophora PH. All measurements are in μm (except n, ratio and percentage) and in the form: mean ± SD (range)
Characters (n) | Male (20) | Hermaphrodite (20) | Female (20) | Infective juvenile (20) |
|---|---|---|---|---|
Body length (L) | 865 ± 51 (782–927) | 4952 ± 969 (3086–5492) | 1874 ± 272 (1513–2290) | 527 ± 268 (474–568) |
L′ (L-T) | 833 ± 51 (748–893) | 4858 ± 970 (2963–6406) | 1818 ± 267 (1468–2218) | 453 ± 29 (389–492) |
a (L/BD) | 8 ± 0.8 (6.6–8.5) | 17 ± 4.6 (9.2–28) | 17.2 ± 2.9 (11–22) | 22 ± 1.9 (19–25) |
b (L/ES) | 9 ± 0.5 (8.5–10) | 31 ± 4.4 (23–37) | 15.2 ± 1.9 (11–19) | 5.4 ± 0.4 (4.7–6.1) |
c (L/T) | 27 ± 2.4 (23–32) | 54 ± 12.3 (25–75) | 34 ± 4.5 (26–42) | 7.3 ± 1.1 (5.5–9.3) |
c′ (T/ABW) | 1.7 ± 0.2 (1.4–2.2) | 1.9 ± 0.5 (1.2–3.7) | 2.0 ± 0.3 (1.6–2.5) | 5.4 ± 1.0 (3.4–7.5) |
V (V′/L)×100 | - | 45 ± 3.6 (37–52) | 45 ± 2.7 (38–51) | - |
Body diameter (BD) | 108 ± 8.1 (92–120) | 292 ± 44 (221–352) | 110 ± 16.2 (84–150) | 25 ± 1.8 (22–28) |
Excretory pore (EP) | 122 ± 9.9 (103–139) | 209 ± 33 (127–260) | 152 ± 14.4 (128–181) | 119 ± 4.5 (110–127) |
Width at EP (WEP) | 33 ± 4.2 (23–42) | 110 ± 16 (72–131) | 73 ± 9.1 (57–92) | 20 ± 1.9 (17–23) |
Nerve ring (NR) | 66 ± 5.4 (58–76) | 131 ± 21 (79–162) | 85 ± 7.1 (71–99) | 73 ± 7.2 (61–90) |
Pharynx length (PL) | 96 ± 6.2 (84–105) | 159 ± 23 (101–200) | 123 ± 6.7 (113–135) | 99 ± 6.4 (90–115) |
Bulb length (EBL) | 20 ± 2.5 (16–26) | 32 ± 4.9 (23–44) | 26 ± 3.7 (21–33) | 17 ± 2.1 (14–21) |
Bulb width (EBW) | 17 ± 1.3 (15–20) | 30 ± 2.9 (22–35) | 23 ± 2.7 (18–29) | 9.4 ± 1.0 (7.7–10.8) |
Tail | 32 ± 2.2 (28–37) | 94 ± 13 (71–123) | 56 ± 8.2 (41–79) | 74 ± 11 (57–90) |
Anal body width (ABW) | 18 ± 2.1 (15–23) | 51 ± 8.8 (34–75) | 29 ± 3.5 (24–39) | 15 ± 2.3 (11–19) |
Spicule length (SPL) | 44 ± 4.5 (31–53) | - | - | - |
Gubernaculum length, GL | 21 ± 2.7 (17–26) | - | - | - |
D% (EP/ES×100) | 128 ± 14 (108–157) | 132 ± 11.7 (112–155) | 124 ± 12.1 (108–150) | 122 ± 8.6 (105–139) |
E% (EP/T×100) | 385 ± 42 (302–465) | 227 ± 43 (105–302) | 278 ± 44 (187–360) | 165 ± 25 (131–211) |
SW% (SL/ABD×100) | 242 ± 28 (194–282) | - | - | - |
GS% (GL/SL×100) | 47 ± 7.0 (37–57) | - | - | - |
Width at vulva (WV) | - | 270 ± 48 (168–341) | 119 ± 21.5 (83–151) | - |
Anterior to vulva (V′) | - | 2241 ± 424 (1363–2903) | 851 ± 132 (621–1050) | - |
Posterior to vulva (V″) | - | 2711 ± 611 (1684–3733) | 1022 ± 156 (784–1258) | - |