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10-Minute Presentation

Plant-Insect Ecosystems

10-min: P-IE, Biological Control 2

Overwintering in California: A brief look at the resilience of Trissolcus japonicus

Sunday, November 10, 2024
3:30 PM – 3:42 PM MST
Location: Phoenix Convention Center, 222 C, PCC
Oral Presentation

    Presenting Author(s)

  • DR

    Daniel Roberts

    Pest Prevention Assistant III
    California Department of Food and Agriculture
    Citrus Heights, California

    • Co-Author(s)

  • VM

    Vincent Maiquez

    Environmental Scientist
    California Department of Food and Agriculture
    Vallejo, California

  • RL

    Ricky Lara (he/him/his)

    Senior Research Scientist
    University of California
    Sacramento, California

Trissolcus japonicus, the Samurai Wasp is one of the leading natural enemies used in the classical biocontrol of the invasive polyphagous Brown Marmorated Stink Bug (BMSB), Halyomorpha halys. Since the first detection in the state of an adventive population of T. japonicus in 2017-2018, the California Department of Food and Agriculture has worked to rear the parasitoid with the intent of mass releasing in hotspots of BMSB activity. To facilitate the establishment of T. japonicus at target locations a study was begun on the overwintering survival of the parasitoid, beginning with the temperate conditions found around Sacramento and Davis, Ca. where BMSB had previously established. Choice and no-choice trials were set up in a growth chamber and in a greenhouse breezeway to represent ideal and extreme conditions the parasitoid would be subjected to. Results will be discussed.