Specific Resistance to Malathion in Laboratory and Field Populations of the Australian Sheep Blowfly, Lucilia cuprina (Diptera: Calliphoridae)

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Adults and third instars of the RM strain of Lucilia cuprina (Wiedemann) were highly resistant to malathion and phenthoate, but not to diazinon. The carboxylesterase inhibitor, triphenyl phosphate, completely suppressed the resistance to malathion in RM, while enzyme preparations from this strain showed higher levels (1.5–3.6-fold) of carboxylesterase activity than similar preparations from a reference susceptible strain. In genetic studies on RM using a multimarker susceptible strain, malathion resistance was inherited as a single, dominant gene on chromosome 4, which may be allelic to the gene for general organophosphorus resistance. The malathion-specific resistance was detected in 11% of individuals from field samples collected over a wide area of Australia.

Document Type: Research Article

Publication date: December 1, 1984

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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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