Toxicity of Four Organophosphorus Insecticides to a Malathion-Resistant Strain of the Indian Meal Moth in North Carolina

Authors: Bansode, P. C.; Campbell, W. V.; Nelsons, L. A.

Source: Journal of Economic Entomology, Volume 74, Number 4, August 1981 , pp. 382-384(3)

Publisher: Entomological Society of America

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Abstract:

A field-collected and a laboratory strain of Plodia interpunctella (Hübner) were treated in the laboratory with malathion and four other organophosphorus compounds. Studies revealed that the field strain of P. interpunctella was >227-fold resistant to malathion. Since most resistance was suppressed by the synergistic action of triphenyl phosphate, the carboxyesterase appears to play a major role in the detoxification mechanism of malathion in this strain. The malathion-resistant strain showed a low level of tolerance to the other four organophosphorus compounds. Tolerance levels to these compounds were: pirimiphos methyl × 1.9; fenitrothion × 1.6; bromophos × 1.3; CGA-20168 (transphosphorothioic acid O, O-dimethyl 0-(2-methoxycarbonyl-2-methylvinyl-ester) × 1.5.

Document Type: Research Article

Publication date: August 1, 1981

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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