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Evaluation of a New Spraying Machine for Barrier Treatment and Penetration of Bifenthrin on Vegetation Against Mosquitoes

Fulcher, Ali, Farooq, Muhammad, Smith, Michael L., Li, Chun-Xiao, Scott, Jodi M., Thomson, Emily, Kaufman, Phillip E., Xue, Rui-De
Journal of the American Mosquito Control Association 2015 v.31 no.1 pp. 85-92
Aedes aegypti, adults, bifenthrin, bioassays, leaves, mortality, spraying, trapping, woodlands
The effectiveness and penetration of a novel, truck-mounted mist sprayer (3WC-30-4P provided by American LongRay) was evaluated with bifenthrin in a large, park-like setting with historic floodwater and woodland mosquito populations. Efficacy evaluations were determined through adult population collections and excised leaf bioassays. Trapping results showed a mean reduction of 77% in mosquito populations in the treated area for 5 sampling events up to 4 wk posttreatment. Leaf bioassays revealed an average mortality of 80% at 2.7 m and 51% at 5.5 m against laboratory-reared Aedes aegypti for 5 posttreatment samples. Leaves collected from the treated areas caused higher mortality at distances closer to the sprayer, though the distance and coverage of bifenthrin application was effective up to 5 m.