| Title: | Identification of human-derived volatile chemicals that interfere with attraction of Aedes aegypti mosquitoes |
| Author(s): | Logan JG; Birkett MA; Clark SJ; Powers S; Seal NJ; Wadhams LJ; Mordue Luntz AJ; Pickett JA; |
| Address: | "Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK" |
| DOI: | 10.1007/s10886-008-9436-0 |
| ISSN/ISBN: | 0098-0331 (Print) 0098-0331 (Linking) |
| Abstract: | "It is known that human individuals show different levels of attractiveness to mosquitoes. In this study, we investigated the chemical basis for low attractiveness. We recorded behaviors of Aedes aegypti toward the hands of human volunteers and toward the volatile chemicals produced by their bodies. Some individuals, and their corresponding volatiles, elicited low upwind flight, relative attraction, and probing activity. Analyzing the components by gas chromatography coupled to electrophysiological recordings from the antennae of Aedes aegypti, enabled the location of 33 physiologically relevant compounds. The results indicated that higher levels of specific compounds may be responsible for decreased 'attractiveness.' In behavioral experiments, five of the compounds caused a significant reduction in upwind flight of Aedes aegypti to attractive human hands. Thus, unattractiveness of individuals may result from a repellent, or attractant 'masking,' mechanism" |
| Keywords: | "Adult Aedes/*physiology Animals Chromatography, Gas Electrophysiology Female Humans Male Middle Aged *Odorants Pheromones/*analysis/physiology *Predatory Behavior Sense Organs/drug effects/physiology Volatilization;" |
| Notes: | "MedlineLogan, James G Birkett, Michael A Clark, Suzanne J Powers, Stephen Seal, Nicola J Wadhams, Lester J Mordue Luntz, A Jennifer Pickett, John A eng BBS/E/C/00004189/BB_/Biotechnology and Biological Sciences Research Council/United Kingdom BBS/E/C/00004190/BB_/Biotechnology and Biological Sciences Research Council/United Kingdom Research Support, Non-U.S. Gov't 2008/03/01 J Chem Ecol. 2008 Mar; 34(3):308-22. doi: 10.1007/s10886-008-9436-0. Epub 2008 Feb 29" |
