
Read: More information on this research in Agricultural Research.
Just What Attracts Mosquitoes?By Tara
Weaver-Missick February 4, 2000Agricultural Research Service scientists
have found more than 340 different chemical scents produced by human skin--some
of which are attractive to mosquitoes. With an eye toward developing trap lures, ARS researchers are testing
individual scents and combinations for attractiveness to different mosquito
species. Research chemist Ulrich R. Bernier developed a technique using tiny glass beads that adsorb some scents, thus helping to identify mosquito-attractive organic compounds from humans. Bernier is with the Mosquito and Fly Research Unit of the ARS Center for Medical, Agricultural and Veterinary Entomology in Gainesville, Fla. Bernier has been combining different blends and screening them at different
levels to see which draw mosquitoes. In laboratory tests, he can get about 90
percent of the mosquitoes to come to one particularly alluring mixture. He says
this is impressive, considering a human arm and hand attract about 70 percent
of the same mosquitoes. Finding the right chemical scent is important, because what may be
attractive for one species may not be for another. There are four to six dozen
mosquito species out of 2,700 worldwide that transmit diseases--making it
difficult to pinpoint attractants unique to each. Ultimately, a better understanding of mosquito attraction should help in
developing more effective, environmentally safe repellents for protection from
insects that prey on both humans and livestock. ARS is the chief scientific agency of the U.S. Department of Agriculture. More information on this research appears in the February issue of Agricultural Research magazine. Scientific contact: Ulrich R. Bernier, ARS Center for Medical, Agricultural and Veterinary Entomology, Mosquito & Fly Research Unit, Gainesville, Fla.; phone (352) 374-5931, fax (352) 374-5922, [email protected]. U.S. Department of Agriculture |