La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Heterothermy in an Australian passerine, the Dusky Woodswallow (Artamus cyanopterus)
Auteurs :	Tracy A. Maddocks, Auteur ; Fritz Geiser, Auteur
Type de document :	Article
Dans :	Journal of Ornithology (148(4) OCT 2007)
Article en page(s) :	571-577
Langues:	Anglais
Résumé :	Information regarding passerine heterothermy and torpor is scant, although many species are small and must cope with a fluctuating food supply and presumably would benefit from energy savings afforded by torpor. We studied whether insectivorous Dusky Woodswallows ( Artamus cyanopterus; similar to 35 g) enter spontaneous torpor ( food ad libitum) when held outdoors as a pair in autumn/winter. Woodswallows displayed pronounced and regular daily fluctuations in body temperature ( T(b)) over the entire study period. The mean Tb ranged from similar to

Lundi , mardi et jeudi de 9h à 12h et de 13h à 17h00 : ouverture au public ...