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Student 10-Minute Paper

Physiology, Biochemistry, and Toxicology

Student Competition

Student

Grad Competition PBT: Toxicology

(1st Place) The effect of antiparasitic drugs on selected Scarabaeidae species in West Virginia

Monday, November 6, 2023
9:00 AM – 9:12 AM ET
Location: Gaylord National Resort & Convention Center, Azalea 2
In-Person Student Competition

    Presenting Author(s)

  • HB

    Haylie Julianna Brown

    Graduate Research Assistant
    West Virginia University
    Morgantown, West Virginia

    • Co-Author(s)

  • TB

    Thomas Basden

    WVU Extension Service Nutrient Management
    West Virginia University
    Morgantown, West Virginia

  • TK

    Teiya Kijimoto (he/him/his)

    Assistant Professor of Evolutionary Developmental Genetics
    West Virginia University
    Morgantown, West Virginia

  • JL

    Joseph Lynch

    Assistant Professor
    West Virginia University
    Morgantown, West Virginia

  • KS

    Kevin Shaffer

    Assistant Professor and Extension Livestock Production Specialist
    West Virginia University
    Morgantown, West Virginia

  • ER

    Elizabeth Kells Rowen (she/her/hers)

    Assistant Professor
    West Virginia University
    Morgantown, West Virginia

Dung beetles provide essential services that aid in animal and pasture health. Burying and feeding on feces reduces parasite survival, reincorporates nitrogen into the soil, and reduces greenhouse gas emissions. Antiparasitic drugs used to manage bovine parasites (flies/helminths) in West Virginia have adverse effects on non-target dung beetle species. Parasitic control products used in West Virginia include Clarifly (diflubenzuron - fly control), Cydectin (moxidectin - dewormer/fly control), Ivomec (Ivermectin - dewormer/fly control), LongRange (eprinomectin - dewormer), and Safeguard (fenbendazole - dewormer). We need to assess the exposure of dung beetles to these antiparasitic drugs to understand the risks for dung beetles and the ecosystem services they provide.  We used a field toxicity assay to determine how different products excreted from feces can impact colonization, development, and abundance of different dung beetle species. We homogenized cattle dung dosed with Clarifly (.09, 1, 9µg/g), LongRange (50, 200, 500ng/g), or Safeguard (.3, 3, 10µg/g ). Dosed-dung was contained in 2-gal buckets that we placed on two farms. We allowed this dung to be colonized for 7 days. Once colonization occurred, we monitored insect emergence in the bins until larvae was no longer detected in the dung. Our analysis investigates the initial colonization of adult insects and the success of the first generation when exposed to increasing doses of anti-parasitic drugs.