Insecticide Resistance in Western Flower Thrips

  • Karen L. Robb
  • Julie Newman
  • Judy K. Virzi
  • Michael P. Parrella
Part of the NATO ASI Series book series (NSSA, volume 276)


Leaf dip bioassays were used to determine the breadth of tolerance of three pesticides for western flower thrips (WFT) populations collected from greenhouses with minimal (’sD’ strain) and intensive insecticide use (’sB’ strain), and from a susceptible colony where no pesticides were applied for 1 yr prior to the study (‘UC’ strain). Additionally, five doses of three pesticides were applied topically. In the bioassays insecticide treatments were more efficacious against the ‘UC’strain than the field-collected strains; topical applications showed increased resistance levels in the’ sB’ strain.


Topical Application Field Rate Insecticide Resistance Tomato Spotted Wilt Virus Resistance Ratio 
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Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • Karen L. Robb
    • 1
  • Julie Newman
    • 2
  • Judy K. Virzi
    • 3
  • Michael P. Parrella
    • 4
  1. 1.University of California Cooperative ExtensionSan DiegoUSA
  2. 2.University of California Cooperative ExtensionVenturaUSA
  3. 3.Department of EntomologyUniversity of CaliforniaRiversideUSA
  4. 4.Department of EntomologyUniversity of CaliforniaDavisUSA

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