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Absorption and Metabolism of Carbaryl by Several Insect Species1

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The absorption and metabolism of C14 carbaryl was studied in the house fly, Musca domestica L.; stable fly, Stomoxys calcitrans (L.); boll weevil, Anthonomus grandis Boheman; and rice weevil, Sitophilus oryza (L.). Following topical applications of carbaryl, the percentage of the applied dose absorbed by each species of insect within 24 hours was: stable fly 56.7%, house fly 37.3%, boll weevil 12.2%, and rice weevil 3.3%. Five metabolites, including 1-naphthol, were isolated from insects by Florosil and thin-layer chromatography; 4 metabolites were unidentified. Carbaryl was quite stable in both species of weevils. The major metabolite in the feces of house flies was a highly polar material. There were no qualitative differences in number of metabolites isolated from house flies, boll weevils, and rice weevils, but there were quantitative differences in each metabolite present in the internal extract. The species specificity of carbaryl appeared to be functions of rate of absorption and enzymatic degradation within the particular insect species.

Document Type: Research Article

Publication date: June 1, 1967

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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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