Studies were conducted in the laboratory to determine the extent of resistance to malathion in field populations of Tribolium castaneum (Herbst). The studies revealed that field populations of this species are 44-fold resistant to malathion in comparison to a laboratory maintained population. The resistance in this species appears to be of malathion-specific type since triphenyl phosphate suppressed the resistance. The malathion-resistant strain did not show cross-resistance to 4 other organophosphorus insecticides. Tolerance levels to the 4 compounds were: pirimiphos methyl × 0.8; Ciba-Geigy CGA-20168 (trans-phosphorothioic acid, 0,0-dimethyl-0-(2-methoxycarbonyl-2-methylvinyl)-ester) × 0.8; bromophos × 1.0; and fenitrothion × 1.0,
Document Type: Research Article
Publication date: June 1, 1979
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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.