Populations of Phytoseiulus persimilis (Acari: Phytoseiidae) and Its Host, Tetranychus urticae (Acari: Tetranychidae), on Resistant and Susceptible Soybean Cultivars

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The populations of a predaceous mite, Phytoseiulus persimilis Athias-Henriot, and its prey, the twospotted spider mite, Tetranychus urticae Koch, were examined on a resistant and a susceptible soybean, Glycine max (L.) Merrill, cultivar in the laboratory. Both predation and the resistant soybean cuItivar reduced the phytophagous mite population, with the predation effect being the more pronounced. There was no indication of interaction of predation by P. persimilis and soybean cultivar on T. urticae mortality. When adequate prey were available, there was no indication of antibiosis on the predator population from feeding on prey reared on resistant plants. However, the P. persimilis population was reduced at the lowest prey density examined from lack of prey and subsequent cannibalism.

Document Type: Research Article

Publication date: June 1, 1992

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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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