منابع مشابه
Diving energetics in king penguins (Aptenodytes patagonicus).
Dive duration in wild king penguins and the energetic cost of swimming in a 30m long swim channel were determined at Ile de la Possession, Crozet Archipelago, using external data loggers and respirometry, respectively. Calibrated electronic data loggers equipped with a pressure sensor were used to determine dive durations: 95% of dives were less than 6 min long and 66% of dives were less than 4...
متن کاملInter-Annual Variability of Fledgling Sex Ratio in King Penguins
As the number of breeding pairs depends on the adult sex ratio in a monogamous species with biparental care, investigating sex-ratio variability in natural populations is essential to understand population dynamics. Using 10 years of data (2000-2009) in a seasonally monogamous seabird, the king penguin (Aptenodytes patagonicus), we investigated the annual sex ratio at fledging, and the potentia...
متن کاملGlucose regulates lipid metabolism in fasting king penguins.
This study aims to determine whether glucose intervenes in the regulation of lipid metabolism in long-term fasting birds, using the king penguin as an animal model. Changes in the plasma concentration of various metabolites and hormones, and in lipolytic fluxes as determined by continuous infusion of [2-3H]glycerol and [1-14C]palmitate, were examined in vivo before, during, and after a 2-h gluc...
متن کاملKing penguins can detect two odours associated with conspecifics.
Recent studies on olfaction in penguins have focused on their use of odours while foraging. It has been proposed for some seabirds that an olfactory landscape shaped by odours coming from feeding areas exists. Islands and colonies, however, may also contribute to the olfactory landscape and may act as an orienting map. To test sensitivities to a colony scent we studied whether King penguins (Ap...
متن کاملMutual Mate Choice for Colorful Traits in King Penguins
* Department of Biology, The Citadel, Charleston, SC, USA Department of Biological Sciences, Auburn University, AL, USA Centre d’Ecologie Fonctionelle et Evolutive, Centre Nacional de la Recherche Scientifique, Montpellier, France § Animal Ecology Group, Centre for Ecological and Evolutionary Studies, University of Groningen, AA Haren, The Netherlands – Department of Biology, California State U...
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ژورنال
عنوان ژورنال: Bulletin of the Ecological Society of America
سال: 2005
ISSN: 0012-9623
DOI: 10.1890/0012-9623(2005)86[128:kp]2.0.co;2