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Physiology, Biochemistry, and Toxicology

Poster

PBT: Arthropod Toxicology

D3352: Resistance status of Tetranychus urticae Koch (Acari: Tetranychidae) and Lygus hesperus Knight (Heteroptera: Miridae) in California strawberries

Wednesday, November 16, 2022
9:00 AM – 2:00 PM PT
Location: West Exhibit Hall A
In-Person Poster

    Presenting Author(s)

  • KJ

    Kiley W. Jensen

    Graduate Student
    California Polytechnic State University
    San Luis Obispo, California

    • Co-Author(s)

  • Sarah Zukoff (she/her/hers)

    Research Entomologist
    California Polytechnic State University
    San Luis Obispo, California

Laboratory bioassays were conducted to determine the toxicity of five different miticides and insecticides to Tetranychus urticae Koch and Lygus hesperus Knight respectively. LC50 values were generated from our laboratory susceptible populations of each of the pest species after a series of discriminating dose trials. Field populations from each major strawberry growing region in California were obtained and subjected to the discriminated dose of each chemical tested and resistance ratios were generated after mortality was assessed. Factors affecting insect resistance management and future use in strawberries are discussed.