Monday, December 10, 2007 - 9:53 AM

Attraction of Culex pipiens mosquitoes to CFG traps baited with floral extracts

Philip E. Otienoburu,, Ohio State University, Entomology, 318W 12th Ave, Columbus, OH

Current research has enabled us to identify six local plant species that mosquitoes visit and utilize for nectar, and extracts of these plants have been shown to be significantly attractive to Culex pipiens in wind tunnel experiments in the lab. Culex pipiens mosquitoes are important vectors of West Nile Virus in the United States. A novel method of trapping hematomophagous mosquitoes is proposed, using counter-flow geometry traps (CFG) baited with floral extracts. Extracts of these floral volatiles have also been analysed using Gas Chromatography and Mass Spectrometry (GC/MS) to determine their constituent fractions, with the aim of creating synthetic blends. Experiments will be set-up in semi-field screen house environments where release rates and extract potency will be determined, before moving to the field. Field experiments will be conducted through the summer, and trap catches will be evaluated for species composition and comparisons done using lightless CO2 baited CDC traps, the most prevalent surveillance method currently in use. Both semi-field and field experiments will be conducted in Columbus, Ohio.

Species 1: Diptera Culicidae Culex pipiens (northern house mosquito)