| Behavioural responses of Anopheles gambiae sensu stricto to components of human breath, sweat and urine depend on mixture composition and concentration. | |
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MedLine Citation:
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PMID: 21108650 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Host-seeking behaviour of the anthropophilic malaria vector Anopheles gambiae sensu stricto (Diptera: Culicidae) is mediated predominantly by olfactory cues. Several hundreds of odour components have been identified from human emanations, but only a few have been proven to act as attractants or synergists in the host-seeking behaviour of female An. gambiae. In previous work, aromatics, alcohols and ketones in human odours were found to elicit electrophysiological activity in antennal olfactory neurons of female An. gambiae. However, the behavioural effects of these compounds have not been investigated. In this study, behavioural responses of female An. gambiae to components of human breath, urine and sweat at a series of concentrations, or a single concentration in the case of acetone, were examined in combination with ammonia and L-lactic acid in a dual-choice olfactometer. The results showed that at specific concentrations 4-ethylphenol, indole, 3-methyl-1-butanol and two ketones inhibited the attractive effect of a mixture of ammonia and lactic acid. Acetone on its own was not attractive; however, when combined with lactic acid, the binary mixture was attractive. When combined with ammonia, acetone inhibited the attractiveness exerted by ammonia alone. Dodecanol and dimethyldisulphide did not affect the attraction exerted by ammonia and lactic acid at any of the concentrations tested. By contrast, a human-specific armpit odour, 7-octenoic acid, augmented the attraction exerted by the combination of ammonia and lactic acid at a specific dosage. |
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Authors:
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Y T Qiu; R C Smallegange; J J A VAN Loon; W Takken |
Publication Detail:
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Type: Journal Article Date: 2010-11-25 |
Journal Detail:
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Title: Medical and veterinary entomology Volume: 25 ISSN: 1365-2915 ISO Abbreviation: Med. Vet. Entomol. Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-08-05 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8708682 Medline TA: Med Vet Entomol Country: England |
Other Details:
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Languages: eng Pagination: 247-55 Citation Subset: IM |
Copyright Information:
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© 2010 The Authors. Medical and Veterinary Entomology © 2010 The Royal Entomological Society. |
Affiliation:
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Laboratory of Entomology, Wageningen University, Wageningen, the Netherlands. |
Export Citation:
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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