Effects of host plants on the susceptibility to deltamethrin and activities of detoxication enzymes of Heliothis armigera (Hübner) were studied by bioassay and biochemical methods. Results showed that the susceptibility levels to deltamethrin of the larvae fed separately on 5 different diets were substantially different. The ratio of maximum to minimum LD50s for deltamethrin on different diets was ≍60-fold. All the larvae possessed 17 free amino acids; of these, glutamate, glycine and arginine were main components. The activity levels of α-naphthylacetate est erase and aldrin epoxidase in test larvae corresponded with the response to deltamethrin. We suggest that α-naphthylacetate est erase and aldrin epoxidase are important in the metabolism of external substances during the development of H. armigera, and that induction of these enzymes can affect responses to deltamethrin.
Document Type: Research Article
Publication date: February 1, 1996
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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.