Fruit flies learn to avoid odours associated with virulent infection.

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Serval ID
serval:BIB_E6BEB290605D
Type
Article: article from journal or magazin.
Collection
Publications
Title
Fruit flies learn to avoid odours associated with virulent infection.
Journal
Biology Letters
Author(s)
Babin A., Kolly S., Schneider F., Dolivo V., Zini M., Kawecki T.J.
ISSN
1744-957X (Electronic)
ISSN-L
1744-9561
Publication state
Published
Issued date
2014
Peer-reviewed
Oui
Volume
10
Number
3
Pages
20140048
Language
english
Abstract
While learning to avoid toxic food is common in mammals and occurs in some insects, learning to avoid cues associated with infectious pathogens has received little attention. We demonstrate that Drosophila melanogaster show olfactory learning in response to infection with their virulent intestinal pathogen Pseudomonas entomophila. This pathogen was not aversive to taste when added to food. Nonetheless, flies exposed for 3 h to food laced with P. entomophila, and scented with an odorant, became subsequently less likely to choose this odorant than flies exposed to pathogen-laced food scented with another odorant. No such effect occurred after an otherwise identical treatment with an avirulent mutant of P. entomophila, indicating that the response is mediated by pathogen virulence. These results demonstrate that a virulent pathogen infection can act as an aversive unconditioned stimulus which flies can associate with food odours, and thus become less attracted to pathogen-contaminated food.
Pubmed
Web of science
Create date
26/03/2014 17:13
Last modification date
20/08/2019 17:09
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