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Establishment ofPhytoseiulus persimilis [Acari: Phytoseiidae] in Southern California

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Abstract

Annual releases ofPhytoseiulus persimilis A.-H. in commercial strawberry fields in Ventura County, California, beginning in 1971, have resulted in the establishment of this predator on strawberry, lima beans, and weeds such asMalva, Solanum andConvolvulus spp., throughout the Oxnard area. These weed species apparently are important reservoirs from whichP. persimilis disperses to new plantings of strawberries each season. This predator is now an important factor in the suppression ofTetranychus urticae (Koch) on strawberry and probably on lima beans in Ventura County.

Résumé

Des lâchers annuels dePhytoseiulus persimilis A.-H. dans des cultures commerciales de fraisiers dans le comté de Ventura en Californie, à partir de 1971, ont abouti à l'installation du prédateur dans les fraisiers, les haricots de Lima et des mauvaises herbes telles queMalva, Solanum etConvolvulus spp. dans toute la région d'Oxnard. Ces mauvaises herbes constituent, semble-t-il, d'importants réservoirs à partir desquelsP. persimilis se disperse chaque saison vers les nouvelles plantations de fraisiers. Ce prédateur est maintenant un facteur important de lutte contreTetranychus urticae (Koch) sur fraisier et probablement sur haricot de lima dans le comté de Ventura.

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Authors and Affiliations

  1. Division of Biological Control, University of California, Riverside, U.S.A.

    J. A. McMurtry & E. R. Oatman

  2. Agricultural Pest Management Service, 145 Via Baja, 93003, Ventura, California, U.S.A.

    P. A. Phillips & C. W. Wood

Authors
  1. J. A. McMurtry
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  2. E. R. Oatman
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  3. P. A. Phillips
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  4. C. W. Wood
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McMurtry, J.A., Oatman, E.R., Phillips, P.A. et al. Establishment ofPhytoseiulus persimilis [Acari: Phytoseiidae] in Southern California. Entomophaga 23, 175–179 (1978). https://doi.org/10.1007/BF02371725

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  • DOI: https://doi.org/10.1007/BF02371725

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