Table 2 Morphometric of all generations of isolate Steinernema abbasi CS-39. All measurements are in micrometer (µm) mean ± standard deviation (range)
Characters no. (µm) | First generation | Second generation | Infective Juveniles (IJs) | ||
|---|---|---|---|---|---|
15♂ | 15♀ | 15♂ | 15♀ | 20 | |
Total body length (L) | 1027 ± 106 (825–1241) | 3820 ± 3070 (1033–9324) | 1052 ± 229 (762–1390) | 1143 ± 222 (685–1586) | 496 ± 55 (344–552) |
Maximum body width (MBD) | 80 ± 33 (40–151) | 156 ± 63 (81–318) | 70 ± 8.7 (57–89) | 70 ± 7.2 (59–86) | 30 ± 2.6 (25–33) |
Excretory pore (EP) | 70 ± 8.8 (59–89) | 72 ± 23 (34–112) | 58 ± 18 (29–92) | 41 ± 13 (30–67) | 39 ± 8.6 (23–53) |
Nerve ring (NR) | 79 ± 10 (62–95) | 108 ± 40 (48–189) | 67 ± 23 (29–109) | 76 ± 16 (55–110) | 59 ± 7.4 (47–70) |
Pharynx length (ES) | 118 ± 13 (100–140) | 160 ± 33 (127–245) | 102 ± 8.4 (74–111) | 122 ± 17 (93–151) | 94 ± 12 (73–120) |
Anal body width (ABD) | 39 ± 6.4 (30–54) | 54 ± 26 (30–127) | 40 ± 4.9 (32–50) | 25 ± 6.2 (13–33) | 18 ± 1.8 (14–20) |
Tail | 23 ± 2.0 (20–28) | 47 ± 30 (24–143) | 22 ± 3.1 (18–28) | 35 ± 8.8 (21–50) | 50 ± 8.5 (33–63) |
a = L/MBW | 15 ± 1.2 (13–17) | 22 ± 11 (7.4–45) | 14 ± 3.1 (9–20) | 16 ± 3.0 (8.7–20) | 17 ± 1.3 (14–19) |
b = L/ES | 10 ± 1.1 (8.6–13) | 22 ± 14 (7.4–47) | 9 ± 2.0 (6–13) | 9.4 ± 1.4 (7.4–12) | 5.3 ± 0.6 (4.5–6.7) |
c = L/Tail | 47 ± 7.6 (37–67) | 88 ± 73 (26–274) | 45 ± 5.7 (37–57) | 34 ± 9.2 (24–61) | 10.1 ± 1.3 (7.8–12.9) |
Vulva (V) | – | 158 ± 114 (25–347) | – | 16 ± 3 (8.7–20) | – |
D% = EP/ES × 100 | 69 ± 10 (60–96) | 45 ± 11 (24–64) | 50 ± 13 (22–69) | 34 ± 8.9 (23–48) | 43 ± 11 (20–57) |
E% = EP/Tail × 100 | 307 ± 50 (261–447) | 183 ± 85 (70–379) | 264 ± 72 (158–402) | 123 ± 35 (71–185) | 81 ± 23 (37–123) |
Spicule length (SPL) | 64 ± 5.0 (52–73) | – | 60 ± 7.4 (43–73) | – | – |