Titre
Melanin-based plumage coloration and melanin content in organs in the barn owl.
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Roulin, A.
Auteure/Auteur
Dubey, S.
Auteure/Auteur
Ito, S.
Auteure/Auteur
Wakamatsu, K.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
2193-7192
Statut éditorial
Publié
Date de publication
2024
Volume
165
Numéro
2
Première page
429
Dernière page/numéro d’article
438
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Publication Status: ppublish
Résumé
Although the evolutionary ecology of melanin pigments and melanin-based coloration has been studied in great details, particularly in birds, little is known about the function of melanin stored inside the body. In the barn owl Tyto alba, in which individuals vary in the degree of reddish pheomelanin-based coloration and in the size of black eumelanic feather spots, we measured the concentration in melanin pigments in seven organs. The eyes had by far the most melanin then the skin, pectoral muscle, heart, liver, trachea, and uropygial gland. The concentration in eumelanin was not necessarily correlated with the concentration in pheomelanin suggesting that their production can be regulated independently from each other. Redder barn owls had more pheomelanin in the skin and uropygial gland than white owls, while owls displaying larger black feather spots had more eumelanin in the skin than small-spotted owls. More data are required to evaluate whether melanin-based traits can evolve as an indirect response to selection exerted on melanin deposition in organs.
PID Serval
serval:BIB_5AC90247B016
PMID
Open Access
Oui
Date de création
2024-03-15T20:04:26.922Z
Date de création dans IRIS
2025-05-20T14:38:09Z
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Nom
s10336.pdf
Version du manuscrit
published
Licence
https://creativecommons.org/licenses/by/4.0
Taille
1020.28 KB
Format
Adobe PDF
PID Serval
serval:BIB_5AC90247B016.P001
URN
urn:nbn:ch:serval-BIB_5AC90247B0169
Somme de contrôle
(MD5):6361aaa5b6f217ac1bf56c3a1343203a