Bulletin of the National Research Centre

Table 1 Toxicological evaluation of etofenprox and chlorpyrifos against newly hatched larvae of P. gossypiella and E. insulana under laboratory conditions

From: Impact of conventional insecticides on two bollworms and their indirect effects on the ectoparasitoid, Bracon brevicornis (Wesmael) (Hymenoptera: Braconidae)

Insect	Compounds used	Toxicity, (95% Confidence limits)
Insect	Compounds used	LC₅₀ (ppm)	LC₉₀ (ppm)	Slope ± SE
P. gossypiella	Etofenprox	0.07 (0.053–0.09)	0.39 (0.27–0.68)	1.71 ± 0.23
P. gossypiella	Chlorpyrifos	0.87 (0.59–1.22)	6.22 (3.60–17.90)	1.50 ± 0.27
E. insulana	Etofenprox	0.09 (0.07–0.11)	0.30 (0.23–0.43)	2.46 ± 0.27
E. insulana	Chlorpyrifos	0.73 (0.52–0.95)	3.26 (2.24–6.16)	1.97 ± 0.32

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