English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/8962
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 2 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar bibText (RIS)Exportar csv (RIS)
Título

Effect of Daily Body Mass Variation on the Foraging Behaviour of Tit Species (Parus spp.)

Autor Barluenga, Marta ; Barbosa, Andrés ; Moreno, Eulalia
Palabras clave Parus
Daily Body Mass Variation
Fecha de publicación 4-dic-2003
EditorBlackwell Publishing
Citación Ethology Volume 109 Issue 12, Pages 971 - 979
ResumenWe studied the effect of daily body mass increase on the foraging preferences of two tit species, crested tit, Parus cristatus and blue tit, P. caeruleus, contrasting in morphology and behaviour. We found that both species show a diurnal increase in body mass during winter. Using an experiment with feeders we show that in the crested tit, the proportion of time spent foraging while hanging decreased as body mass increased. In contrast, in the blue tit, foraging behaviour did not change with mass gain. We propose that the species with a morphological design providing a high ecological plasticity in terms of foraging postures can counteract the negative effect of body mass on the ecological options (foraging niche) more than species with a morphological design providing a low ecological plasticity in terms of foraging postures. Our results suggest that blue tits had the advantage of being able to choose to feed on different patches in the habitat throughout the day, which makes resources more predictable for them. In contrast, crested tits might be more restricted in their foraging options as their body mass increases, and this might explain why they hoard food.
Versión del editorhttp://dx.doi.org/10.1046/j.1439-0310.2003.00949.x
URI http://hdl.handle.net/10261/8962
DOI10.1046/j.1439-0310.2003.00949.x
ISSN1439-0310 (Online)
0179-1613 (Print)
Aparece en las colecciones: (EEZA) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
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.