A fitness cost of learning ability in Drosophila melanogaster.

Détails

ID Serval
serval:BIB_D48692EF1BFB
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
A fitness cost of learning ability in Drosophila melanogaster.
Périodique
Proceedings of the Royal Society of London B Biological Sciences
Auteur(s)
Mery F., Kawecki T.J.
ISSN
0962-8452[print]
Statut éditorial
Publié
Date de publication
2003
Peer-reviewed
Oui
Volume
270
Numéro
1532
Pages
2465-2469
Langue
anglais
Résumé
Maintenance of substantial genetic variation for learning ability in many animal populations suggests that learning ability has fitness costs, but there is little empirical evidence for them. In this paper, we demonstrate an evolutionary trade-off between learning ability and competitive ability in Drosophila melanogaster. We show that the evolution of an improved learning ability in replicated experimental fly populations has been consistently associated with a decline of larval competitive ability, compared with replicated control populations. The competitive ability was not affected by crossing of the replicate populations within each selection regime, excluding differential inbreeding as a potential confounding factor. Our results provide evidence for a constitutive fitness cost of learning ability, i.e. one that is paid irrespective of whether or not the learning ability is actually used.
Mots-clé
Animals, Competitive Behavior/physiology, Crosses, Genetic, Drosophila melanogaster/physiology, Evolution, Genetics, Population, Larva/physiology, Learning/physiology, Switzerland
Pubmed
Web of science
Création de la notice
19/11/2007 11:49
Dernière modification de la notice
20/08/2019 16:54
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