Food supplementation mitigates dispersal-dependent differences in nest defence in a passerine bird.

Détails

ID Serval
serval:BIB_D5EE84555504
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Food supplementation mitigates dispersal-dependent differences in nest defence in a passerine bird.
Périodique
Biology Letters
Auteur(s)
Récapet C., Daniel G., Taroni J., Bize P., Doligez B.
ISSN
1744-957X (Electronic)
ISSN-L
1744-9561
Statut éditorial
Publié
Date de publication
2016
Volume
12
Numéro
5
Pages
20160097
Langue
anglais
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.
Mots-clé
dispersal, anti-predator behaviour, parental care, personality, habitat quality, Ficedula albicollis
Pubmed
Web of science
Création de la notice
19/07/2016 12:25
Dernière modification de la notice
20/08/2019 15:55
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