Absorption and Metabolism of C14-Labeled Tepa by the Boll Weevil1,2,3

Authors: HEDIN, P. A.; WIYGUL, G.; MITLIN, N.

Source: Journal of Economic Entomology, Volume 60, Number 1, February 1967 , pp. 215-218(4)

Publisher: Entomological Society of America

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Some aspects of the absorption and metabolism of C14 labeled tepa by the male boll weevil, Anthonomus grandis Boheman, were studied. Topically applied tepa is absorbed almost immediately into the haemolymph, where it reaches a peak in 1—3 hours and then slowly declines. This trend parallels a decline of tepa on the cuticle to 10% within 6 hours. Values of the differential distribution ratio for body parts and organs were determined for injection and for topical treatment on the abdomen. Selective concentration occurred in the foregut, testes, and wings with injection and in the wings only with topical treatment. Radioactivity detected in the spermathecae of females mated to treated males gave presumptive evidence that the sperm was labeled. About 85% of the initial radioactivity was detected in feces, expired CO2 other expired volatiles, and body of injected insects after 2 days. Of the residual radioactivity in the body at 2 days, more than 85% was bound by constituents with low molecular weight.

Document Type: Research Article

Publication date: February 1, 1967

More about this publication?
  • 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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