Dekker, T. and Steib, B. and Carde, R. T. and Geier, Martin (2002) L-lactic acid: a human-signifying host cue for the anthropophilic mosquito Anopheles gambiae. MEDICAL AND VETERINARY ENTOMOLOGY, 16 (1). pp. 91-98. ISSN 0269-283X, 1365-2915
Full text not available from this repository. (Request a copy)Abstract
Using a dual-choice olfactometer, the role Of L-lactic acid was investigated in relation to host-seeking and selection by female Anopheles gambiae Giles sensu stricto (Diptera: Culicidae) mosquitoes in a Y-tube bioassay. L-lactic acid alone was not attractive, but it significantly augmented the attractiveness of CO2, skin odour and skin-rubbing extracts from humans and other vertebrates. Comparing the left and right index fingers of the same person,. one could be made more attractive than the other by adding L-lactic acid to the air stream over that finger. The difference in L-lactic acid concentration between the two air streams offered to the mosquitoes fell within the natural range of variation emanating from a human hand, suggesting that L-lactic acid modulates intraspecific host selection by An. gambiae. Analysis of skin rubbings from various vertebrates (carnivores, chickens, primates, rodents, ungulates) indicated that humans have uniquely high levels of L-lactic acid on their skin. Tests with extracts of skin rubbings from cows and humans, with and without added L-lactic acid, suggest that naturally lower levels of L-lactic acid contribute to the lesser attractiveness of non-humans to An. gambiae s.s.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MALARIA MOSQUITOS; CARBON-DIOXIDE; UPWIND FLIGHT; AEDES-AEGYPTI; ODOR; DIPTERA; ATTRACTIVENESS; RESPONSES; CULICIDAE; PREFERENCES; Anopheles gambiae; anthropophily; carbon dioxide; cows; host preference; host selection; humans; L-lactic acid; mosquito behaviour; olfactometer; skin odour |
| Subjects: | 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie > Alumni or Retired > Wirtsfindung bei blutsaugenden Insekten (Dr. Martin Geier) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Nov 2021 16:11 |
| Last Modified: | 08 Nov 2021 16:11 |
| URI: | https://pred.uni-regensburg.de/id/eprint/40539 |
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