Fruit flies learn to avoid odours associated with virulent infection.

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Etat: Public
Version: de l'auteur
ID Serval
serval:BIB_E6BEB290605D
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Fruit flies learn to avoid odours associated with virulent infection.
Périodique
Biology Letters
Auteur(s)
Babin A., Kolly S., Schneider F., Dolivo V., Zini M., Kawecki T.J.
ISSN
1744-957X (Electronic)
ISSN-L
1744-9561
Statut éditorial
Publié
Date de publication
2014
Peer-reviewed
Oui
Volume
10
Numéro
3
Pages
20140048
Langue
anglais
Résumé
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
Création de la notice
26/03/2014 17:13
Dernière modification de la notice
20/08/2019 17:09
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