English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/43311
COMPARTIR / IMPACTO:
Estadísticas
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
Exportar a otros formatos:
Título

Brighter yellow blue tits make better parents

AutorSenar, Juan Carlos ; Figuerola, Jordi ; Pascual Cosp, José
Palabras claveparental investment
good parents
sexual selection
plumage coloration
blue tit
Fecha de publicaciónene-2002
EditorRoyal Society (Great Britain)
CitaciónProc. R. Soc. Lond. B (2002) 269, 257±261
ResumenWhether or not bird ornaments are a signal for direct (e.g. good parents) or indirect (e.g. good genes) bene®ts to prospective partners in sexual selection is controversial. Carotene coloration in Parus species is directly related to the ingestion of caterpillars, so that a brightly carotene-coloured tit may be signalling its ability to ®nd caterpillars, a main high-quality food source for good ¯edgling development, and hence its parental abilities. If carotene-based plumage coloration is related to the good-parent hypothesis, we predict that yellow plumage brightness of tit fathers should be positively correlated to their investment in offspring provisioning. Here, we use cross-fostering experiments in blue tits (Parus caeruleus) to show that chick development (as measured by tarsus length) is related to yellowness of the foster father, but not to that of the genetic parents. Using these data, we were able to measure, for the ®rst time to our knowledge, the separate contribution of genetic and environmental factors (i.e. parental plumage coloration) to chick development, and hence parental investment. Our data, which relate carotenoid coloration to models of good parents, and data from other authors, which relate ultraviolet coloration to good-genes models, stress that different kinds of coloration within an individual may provide different units of information to prospective females
Versión del editorhttp://rspb.royalsocietypublishing.org/content/269/1488/257.full.pdf+html
URIhttp://hdl.handle.net/10261/43311
DOI10.1098/rspb.2001.1882
Aparece en las colecciones: (EBD) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
01pb0712.pdf146,94 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.