Carotenoid-based colour expression is determined early in nestling life.

Détails

Ressource 1Télécharger: BIB_8B607AF35B56.P001.pdf (161.90 [Ko])
Etat: Public
Version: Final published version
ID Serval
serval:BIB_8B607AF35B56
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Carotenoid-based colour expression is determined early in nestling life.
Périodique
Oecologia
Auteur(s)
Fitze P.S., Tschirren B., Richner H.
ISSN
0029-8549 (Print)
ISSN-L
0029-8549
Statut éditorial
Publié
Date de publication
2003
Peer-reviewed
Oui
Volume
137
Numéro
1
Pages
148-152
Langue
anglais
Résumé
Carotenoid-based colours are widespread in animals and are used as signals in intra- and interspecific communication. In nestling birds, the carotenoids used for feather pigmentation may derive via three pathways: (1) via maternal transfer to egg yolk; (2) via paternal feeds early after hatching when females are mainly brooding; or (3) via feeds from both parents later in nestling life. We analysed the relative importance of the proposed carotenoid sources in a field experiment on great tit nestlings ( Parus major). In a within-brood design we supplemented nestlings with carotenoids shortly after hatching, later on in the nestling life, or with a placebo. We show that the carotenoid-based colour expression of nestlings is modified maximally during the first 6 days after hatching. It reveals that the observed variation in carotenoid-based coloration is based only on mechanisms acting during a short period of time in early nestling life. The experiment further suggests that paternally derived carotenoids are the most important determinants of nestling plumage colour.
Mots-clé
Adaptation, Physiological, Animal Feed, Animals, Carotenoids/administration & dosage, Color, Dietary Supplements, Feathers/physiology, Female, Nesting Behavior, Pigmentation, Songbirds/physiology
Pubmed
Web of science
Création de la notice
24/11/2010 16:32
Dernière modification de la notice
20/08/2019 15:50
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