English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/110970
Compartir / Impacto:
Add this article to your Mendeley library MendeleyBASE
Citado 28 veces en Web of Knowledge®  |  Pub MebCentral Ver citas en PubMed Central  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)

Latitudinal variation in parental energy expenditure during brood rearing in the great tit

Autor Sanz, Juan José ; Tinbergen, Joost M.; Moreno Klemming, Juan ; Orell, Markku; Verhulst, Simon
Palabras clave Daily energy expenditure
Doubly labelled water
Parental effort
Parus major
Working day length
Fecha de publicación 2000
EditorBlackwell Publishing
Citación Oecologia 122: 149-154 (2000)
ResumenThe variation in time and energy allocation of female great tits, Parus major, was studied in five different European populations across a latitudinal gradient. Daily energy expenditure (DEE) was measured in females tending 12-day-old broods. The number of daylight hours used by the parents to collect food for the brood increased with latitude, while DEE and feeding rate per brood tended to level off with latitude. Individual variation in DEE could be explained by variation in ambient temperature (–), the duration of activity period (+) and area, but not by brood size, female body mass, brood mass or feeding rate. When the effect of ambient temperature and the duration of the activity period on the day of energy expenditure measurements were controlled for, female DEE still tended to level off with latitude. Temperature and activity alone can thus not explain the observed pattern. The present study suggests that parents at southern latitudes may be under a time constraint and do not increase energy expenditure because they have no more daylight hours available for foraging, while birds at northern latitudes may be under an energy constraint because they do not make full use of the long daylight period available.
Versión del editorhttp://link.springer.com/article/10.1007%2FPL00008842
URI http://hdl.handle.net/10261/110970
Aparece en las colecciones: (MNCN) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Mostrar el registro completo

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