Effects of Gamma- and X-Irradiation on the Toxicity of Malathion to House Flies1,2

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Dosage-mortality studies on the combined effects of 5000 R gamma irradiation and malathion applied topical. ly to adult house flies. Musca domestica L., indicated that (1) newly pupated males, irradiated 4 days before emer- gence, were significantly more tolerant to malathion than when irradiated 2 or 3 days before emergence; (2) fe- male pupae irradiated 2 days before emergence are more tolerant to malathion than when irradiated at any other time. Gamma irradiation increased malathion tolerance more than X-irradiation in both males and females when pupae were irradiated with equal dosages. It is suggested that the increased resistance in Hies from irradiated pupae may be attributed to increased detoxifying enzyme levels.

Document Type: Research Article

Publication date: April 1, 1970

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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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