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Video Q&A

Plant-Insect Ecosystems

Student Competition 10-Minute Paper

Grad P-IE: Invasive Species, Vectors, and IPM On-Demand Presentations

Evaluating reported control failures of Oebalus pugnax in southeast Texas due to lambda-cyhalothrin resistance

On-Demand
Student Competition On-Demand

    Presenting Author(s)

  • Danielle Gray

    Graduate Assistant Research
    Texas A&M University
    Humble, Texas

    • Co-Author(s)

  • SB

    Stephen Biles

    Texas A&M AgriLife Extension
    Port Lavaca, Texas

  • KC

    Kate Crumley

    Texas A&M AgriLife Extension
    Wharton, Texas

  • SB

    Sebe Brown

    Louisiana State University Agricultural Center
    Alexandria, Louisiana

  • TM

    Tyler Mays

    Texas A&M AgriLife Extension
    Brownfield, Texas

  • David L. Kerns

    Texas A&M University
    College Station, Texas

  • DL

    Dalton Ludwick

    Texas A&M AgriLife Extension
    Corpus Christi, Texas

The rice stink bug, Oebalus pugnax (F.), is an economically important pest of rice and grain sorghum in the southern United States. The most common management method used by grain sorghum growers is insecticide applications during the sorghum flowering and grain maturation stages. Control failures after insecticide applications have been recorded in some rice stink bug populations in Texas, with resistance documented in at least one instance. However, the range and extent of resistance has not been thoroughly studied. We are evaluating populations of rice stink bugs along the Texas Coastal Bend and parts of Louisiana in grain sorghum to determine the geographic range where pyrethroid resistance exists as well as quantify the level of resistance. We will expose a total of 20 populations across this geographic range to eight concentrations of lambda-cyhalothrin residue in glass vial bioassays. Four hours after initial exposure, we will record mortality. From these data, we will calculate the lethal concentrations needed to kill 50 and 95% of each population. The results from this study will help determine the efficacy of current management programs based on pyrethroid insecticides and inform future control decisions of rice stink bug in grain sorghum in Texas and Louisiana.