Abstract
Abstract The lethal effects of three synthetic (deltamethrin + thiacloprid, lambda-cyhalothrin, deltamethrin) and two botanical (Palizin®, Sirinol®) insecticides were assayed in laboratory conditions against adult and immature stages of Trissolcus grandis (Thomson), an egg parasitoid of Eurygaster integriceps Puton (Hemiptera: Scutelleridae). Contact bioassays determined that the synthetic insecticides caused 100% mortality of the adult wasps, while the two botanical insecticides had no lethal effects on the adults. The highest level of emergence of T. grandis females from E. integriceps eggs treated with the synthetic insecticides was observed after treatment with lambda-cyhalothrin, and the lowest adult emergence occurred following treatment of the eggs with deltamethrin + thiacloprid. Exposure of E. integriceps eggs with Sirinol impacted parasitoid emergence, but the lowest mean percentage of emergence of adults was from eggs treated when the parasitoids were second instars or pupae. Treatment of eggs...
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