A reappraisal of insect flight towards a distant point source of wind-borne odor
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This communication reappraises the behavioral evidence concerning insect flight toward a point source of wind-borne odor in the light of meteorological information not yet considered in this context. The horizontal tracks of puffs of smoke from a generator in the open air were videorecorded and found to continue along nearly straight lines from the source for at least 25 m, while the shifting wind direction caused the plume formed by the succession of puffs to “snake” to and fro. It is inferred from this and much previous work that within such a distance the wind will be aligned on the source of any wind-borne odor wherever the odor can be detected. This being so, a strategy of finding the odor source by flying roughly upwind on meeting the odor, but holding station against the wind with or without casting across it on losing the odor (odor-modulated anemotaxis), seems likely to be highly adaptive, whereas a strategy of flying along the plume (“odor-trail following”) seems unlikely since it would often take the flier in “wrong” directions and would be more disrupted by turbulence.
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- A reappraisal of insect flight towards a distant point source of wind-borne odor
Journal of Chemical Ecology
Volume 8, Issue 9 , pp 1207-1215
- Cover Date
- Print ISSN
- Online ISSN
- Kluwer Academic Publishers-Plenum Publishers
- Additional Links
- Insect attraction
- odor plume
- odor trail
- Industry Sectors
- Author Affiliations
- 1. ARC Insect Physiology Group Department of Pure and Applied Biology, Imperial College, SW7 2AZ, London, UK
- 2. Department of Statistics, Rothamsted Experimental Station, Harpenden, Herts, UK
- 3. Department of Entomology, Rothamsted Experimental Station, Harpenden, Herts, UK