Toxicity and biological effects of three Egyptian isolates of baculovirus on the cotton leaf worm, Spodoptera littoralis (boisd)

Document Type : Original Article

Authors

1 Department of Entomology, Faculty of Science, Ain Shams University

2 Department of Entomology, Faculty of Science, Cairo University

Abstract

The toxicity of three different isolates of Egyptian baculovirus namely NPVGiza, NPVCairo and NPVAlex to Spodoptera littoralis larvae and their effects on some biological aspects of adults were studied. The second and fourth larval instars were highly susceptible to NPVCairo than to the other isolates. The second larval instar was highly susceptible than the fourth larval instar. NPVCairo induced larval, pupal and adult malformations. It was found that the three NPV's decreased the moth longevity, fecundity, egg hatchability and altered the sex ratio.

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