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Plant-Insect Ecosystems

Student Competition Poster

Grad P-IE: Biodiversity and Behavior 2

D3060: Evaluating brown marmorated stink bug, Halyomorpha halys (Stål) (Hemiptera: Pentatomidae), feeding preferences among hazelnut varieties and attraction to select hazelnut volatiles

Monday, November 14, 2022
9:00 AM – 6:30 PM PT
Location: West Exhibit Hall A
In-Person Poster Student Competition

    Presenting Author(s)

  • Edwin T. Harris

    PhD Student
    Oregon State University
    Corvallis, Oregon

    • Co-Author(s)

  • SM

    Serhan Mermer

    Postdoctoral scholar
    Oregon State University
    Corvallis, Oregon

  • Vaughn Walton

    Professor
    Oregon State University
    Corvallis, Oregon

The brown marmorated stinkbug, Halyomorpha halys (Stål) (Hemiptera: Pentatomidae), is a polyphagous insect that acts as an economically significant pest of hazelnut (Corylus avellana) and other crops in regions of North America and Europe to which the species has been introduced. Halyomorpha halys feeding preference for a research selection variety of hazelnut compared to common commercial varieties was evaluated in dual-choice feeding assays. Adults spent more time in contact with nuts from the research selection and inflicted more corking damage on kernels from this variety compared to commercial (Barcelona or Yamhill) variety nuts. Furthermore, volatile emissions were collected in situ from the research selection and Barcelona variety trees, and hazelnut-produced volatiles were identified by gas chromatography coupled with mass spectroscopy. To investigate the chemosensory cues that contribute to H. halys attraction to hazelnut, antennal responses of H. halys adults and nymphs to select hazelnut-produced volatiles were measured using gas chromatographic-electroantennographic detection. Five volatiles elicited consistent responses in antennae from insects of one or more life stage. Of these compounds, one—a monounsaturated fatty aldehyde—attracted adult females and, to a lesser extent, other life stages in single-choice olfactometer bioassays. Combining this compound with electro-physiologically active sesquiterpenes increased the number of nymphs attracted in bioassays but decreased adult attraction.