Predation ofOligonychus pratensis [Aca.: Tetranychidae] byPhytoseiulus persimilis andAmblyseius californicus [Aca.: Phytoseiidae] under controlled laboratory conditions |
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| Authors: | C H Pickett F E Gilstrap |
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| Institution: | (1) Dept. of Entomology, Texas A&M University, College Station, TX;(2) Present address: Dept. Entomology, University of California, 95616 Davis, CA, U.S.A. |
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| Abstract: | The predator efficacy ofPhytoseiulus persimilis Athias-Henriot andAmblyseius californicus (McGregor) (Acarina: Phytoseiidae) when feeding on the Banks grass mite (BGM),Oligonychus pratensis (Banks) (Tetranychidae), was compared under controlled laboratory conditions. Predation byP. persimilis andA. californicus reduced the BGM densities by 60% and 28%, respectively. In general, phytoseiids preferentially fed upon the more abundant
instars. Ovipositional rates forP. persimilis while feeding on BGM approximated rates when feeding onTetranychus spp.
The use of a trade name is not an endorsement by Texas A&M University. |
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| Keywords: | biological control Phytoseiulus persimilis Amblyseius californicus Oligonychus pratensis spider mites Tetranychidae corn phytoseiids |
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