Titre
Food supplementation mitigates dispersal-dependent differences in nest defence in a passerine bird.
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Récapet, C.
Auteure/Auteur
Daniel, G.
Auteure/Auteur
Taroni, J.
Auteure/Auteur
Bize, P.
Auteure/Auteur
Doligez, B.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
1744-957X
Statut éditorial
Publié
Date de publication
2016-05
Volume
12
Numéro
5
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Publication Status: ppublish
Résumé
Dispersing and non-dispersing individuals often differ in phenotypic traits (e.g. physiology, behaviour), but to what extent these differences are fixed or driven by external conditions remains elusive. We experimentally tested whether differences in nest-defence behaviour between dispersing and non-dispersing individuals changed with local habitat quality in collared flycatchers, by providing additional food during the nestling rearing period. In control (non-food-supplemented) nests, dispersers were less prone to defend their brood compared with non-dispersers, whereas in food-supplemented nests, dispersing and non-dispersing individuals showed equally strong nest defence. We discuss the importance of dispersal costs versus adaptive flexibility in reproductive investment in shaping these differences in nest-defence behaviour between dispersing and non-dispersing individuals. Irrespective of the underlying mechanisms, our study emphasizes the importance of accounting for environmental effects when comparing traits between dispersing and non-dispersing individuals, and in turn assessing the costs and benefits of dispersal.
PID Serval
serval:BIB_40B09977CFC8
PMID
Open Access
Oui
Date de création
2016-06-06T15:34:05.420Z
Date de création dans IRIS
2025-05-20T15:35:32Z