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Video Q&A ViewAttendees 2

Medical, Urban, and Veterinary Entomology

Section Symposium

DoD-funded Research to Transform Ideas into Advanced Products for Vector Control and Bite Prevention On-Demand Presentations

Management of an established population of the Lone Star Tick, Amblyomma americanum, using 4-poster devices in coastal Connecticut, USA

On-Demand
On-Demand

    Presenting Author(s)

  • Kirby C. Stafford, III

    Chief Scientist/State Entomologist
    The Connecticut Agricultural Experiment Station
    New Haven, Connecticut

    • Co-author(s)

  • Scott B. Williams, BCE

    Agricultural Scientist
    DTN
    Boston, Massachusetts

  • DB

    Douglas Brackney

    The Connecticut Agricultural Experiment Station
    New Haven, Connecticut

  • ML

    Megan C. Linske

    Postdoctoral Scientist
    The Connecticut Agricultural Experiment Station
    New Haven, Connecticut

Lone star ticks (Amblyomma americanum L.) are a common human-biting tick in the southeastern United States whose range has been expanding northward to coastal southern New England. We documented the effectiveness of topical treatment of 10% permethrin delivered via 4-poster passive treatment devices to white-tailed deer (Odocoileus virginianus Zimmermann) in the management of a newly discovered A. americanum infestation in Connecticut. Using a high-density deployment of one device/12.7 ha, we were successful in significantly reducing densities of host-seeking adults (93% reduction), nymphs (92% reduction), and larvae (96% reduction) from 2018 to 2020; and reducing adult and nymphal burdens (87%) on white-tailed deer. Adult A. americanum percent infection with both Ehrlichia chaffeensis and E. ewingii declined significantly from 47% at the time of discovery in 2017 to 7.1% in 2020. We have shown 4-poster devices can be effective in management of A. americanum and Ehrlichia spp., but at proper deployment density, in this extreme case, ~ 8 deer/device.