Insecticidal Activity of N-Acylcarbamates on Susceptible and Carbaryl-Resistant Strains of the Egyptian Cotton Leafworm

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The toxicity of several N-acyl derivatives of carbaryl and aminocarb® to a susceptible and a carbaryl-resistant strain of Prodenia litura F. was examined. The Nacylcarbamates were generally less toxic than the corresponding N-methylcarbamates to the susceptible strain, and the order of toxicity varied with the nature of the N-acyl moiety. The N-formyl derivative of carbaryl, however, was more toxic than carbaryl on both susceptible and resistant strains. On the resistant strain, the N-acylcarbamates were all more toxic than their corresponding N-methylcarbamates and 1 compound, N-acetyl carbaryl, showed much higher toxicity to the resistant than to the susceptible strain. The results suggest that in vivo deacylation of N-acylcarbamates to the N-methylcarbamate is an important step leading to intoxication by these compounds.

Document Type: Research Article

Publication date: December 15, 1970

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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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