English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/91887
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Seasonal variation of red carotenoid pigments in plasma of wild Crossbill males Loxia curvirostra

AuthorsDel Val, Esther; Negro, Juan J. ; Garrido-Fernández, Juan; Jarén-Galán, Manuel ; Borràs, Antoni; Cabrera, Josep; Senar, Juan Carlos
KeywordsCommon Crossbill
Plumage coloration
Loxia curvirostra
Issue Date2014
PublisherBlackwell Publishing
CitationJournal of Orntihology, 155: 211- 218 (2014)
AbstractCarotenoid-based ornamentation shows great variability in Common Crossbill (Loxia curvirostra) males. Plumage colour ranges from dull yellow to bright red, but the majority of birds tend to be reddish-orange. It has been suggested that moult in this species is bimodal and that the extent of red feathering depends on the period in which feather development occurred. In this study, we analysed the relationship between timing of moult and male plumage colouration in a Common Crossbill population from the Catalonian Pyrenees (NE Spain). Our results demonstrate that the concentrations of dietary carotenoids necessary for the development of red colouration in this species vary significantly within seasons, and that the main time of feather development is apparently well adapted to the period of highest pigment availability in the environment. The intra-specific colour differences between males might be related to the ability to find food resources rich in red carotenoid precursors and to overcome the physiological processes involved in their metabolism, strongly suggesting that red colouration in Crossbills functions as an honest signal of condition and health status. © 2013 Dt. Ornithologen-Gesellschaft e.V.
Identifiersdoi: 10.1007/s10336-013-1002-z
issn: 0021-8375
Appears in Collections:(EBD) Artículos
Files in This Item:
File Description SizeFormat 
PERFIL_LOXIA_Definitivo_JO_Resubmission_Sent to JO.pdf134,91 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.