Efficacy of some native entomopathogenic nematodes against the alfalfa weevil, Hypera postica (Gyllenhal) (Coleoptera: Curculionidae), and the lucerne beetle, Gonioctena fornicata (Brüggemann) (Coleoptera: Chrysomelidae), adults under laboratory conditions

Egyptian Journal of Biological Pest Control

Table 2 Mortality rates of Gonioctena fornicata adults exposed to Heterorhabditis bacteriophora (isolate 09-43) and H. bacteriophora Tokat-Songut and controls over 120 h from treatment

Mortality ± SEM*(%)
HAT**	*Heterorhabditis bacteriophora* (isolate 09-43)				H. *bacteriophora* Tokat-Songut
	500 IJs	1000	2000	Control	500 IJs	1000	2000	Control
32	0.0 ± 0.0a^***	0.0 ± 0.0a	2.4 ± 2.0a	0.0 ± 0.0a	5.3 ± 2.1ab¹	8.2 ± 2.0ab	16.9 ± 5.0a	0.0 ± 0.0b
40	0.9 ± 1.5a	0.6 ± 1.3a	9.0 ± 4.0a	0.0 ± 0.0a	34.2 ± 2.2a	33.9 ± 3.7a	58.3 ± 1.5a	0.0 ± 0.0b
48	0.9 ± 1.5ab	7.0 ± 3.2ab	16.4 ± 4.4a	0.0 ± 0.0b	47.2 ± 1.8a	78.4 ± 9.0a	80.6 ± 3.5a	0.0 ± 0.0b
56	0.9 ± 1.5ab	13.7 ± 3.9ab	16.4 ± 4.4a	0.0 ± 0.0b	52.8 ± 1.8a	83.0 ± 5.5a	86.9 ± 3.9a	0.0 ± 0.0b
64	0.9 ± 1.5ab	19.2 ± 5.9a	25.6 ± 3.2a	0.0 ± 0.0b	63.4 ± 1.5b	85.0 ± 5.2ab	94.8 ± 3.6a	0.0 ± 0.0c
72	12.6 ± 4.7ab	35.5 ± 6.1a	50.0 ± 9.4a	0.0 ± 0.0b	68.9 ± 3.3b	94.7 ± 2.1a	96.0 ± 2.8a	0.0 ± 0.0c
80	26.4 ± 4.6a	46.7 ± 2.9a	72.0 ± 7.5a	0.0 ± 0.0b	71.2 ± 2.9b	94.7 ± 2.1a	96.0 ± 2.8a	0.0 ± 0.0c
88	30.4 ± 6.1a	46.7 ± 2.9a	78.1 ± 5.6a	0.0 ± 0.0b	73.7 ± 2.8b	98.7 ± 1.6a	97.0 ± 2.0a	0.0 ± 0.0c
96	52.4 ± 1.2a	46.7 ± 2.9a	81.0 ± 5.3a	0.0 ± 0.0b	75.8 ± 2.3b	98.7 ± 1.6a	97.0 ± 2.0a	0.0 ± 0.0c
104	60.4 ± 0.8a	57.7 ± 6.1a	93.3 ± 5.6a	0.0 ± 0.0b	82.8 ± 3.2b	98.7 ± 1.6a	97.0 ± 2.0ab	0.0 ± 0.0c
112	64.7 ± 1.1a	68.7 ± 7.5a	93.3 ± 5.6a	0.0 ± 0.0b	90.6 ± 4.4a	99.7 ± 0.9a	99.7 ± 0.9a	0.0 ± 0.0b
120	64.7 ± 1.1b	68.7 ± 7.5b	97.6 ± 2.0a	0.0 ± 0.0c	90.6 ± 4.4b	99.7 ± 0.9ab	100.0 ± 0.0a	0.0 ± 0.0c

*SEM: standard error of the mean
**HAT: hours after treatment
***Means in a line followed by the same letter are not statistical significantly different (ANOVA P < 0.05, Tukey’s test)