Effects of Insecticides on Emergence, Survival, Longevity, and Fecundity of the Parasitoid Diaeretiella rapae (Hymenoptera: Aphididae) from Mummified Myzus persicae (Homoptera: Aphididae)

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Five insecticides were tested in the laboratory for their effects on emergence of Diaeretiella rapae (M'Intosh) from mummified Myzus persicae (Sulzer). Diazinon was the most toxic insecticide followed in descending order by malathion, permethrin, methomyl, and acephate. Based on concentration/mortality regressions, recommended field rates of diazinon and malathion should inhibit emergence by 100 and 82%, respectively, while the remaining insecticides should have no adverse effects on emergence. At recommended field rates, acephate and permethrin significantly reduced survival of D. rapae adults for the first day after emergence, but methomyl did not. After the first day, acephate, permethrin, and methomyl had no significant effects on longevity and fecundity of surviving females.

Document Type: Research Article

Publication date: December 1, 1986

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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