Drastic moult debilitates king penguin youngsters
نویسندگان
چکیده
منابع مشابه
Are king penguin populations threatened by Southern Ocean warming?
Recently, Le Bohec et al. (1) inferred that king penguins (Aptenodytes patagonicus) are at heavy extinction risk under current global warming predictions. Although their demographic modeling was elegant, they based further inferences on results showing that warm El Niño–Southern Oscillation events negatively affect both breeding success and adult survival. Although the results are interesting, ...
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King penguins (Aptenodytes patagonicus) are one of the greatest consumers of marine resources. However, while their influence on the marine ecosystem is likely to be significant, only an accurate knowledge of their energy demands will indicate their true food requirements. Energy consumption has been estimated for many marine species using the heart rate-rate of oxygen consumption (f(H) - V(O2)...
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Accurate estimates of penguin energetics would represent an important contribution to our understanding of the trophodynamics of the Southern Ocean ecosystem and our ability to predict effects of environmental change on these species. We used the heart rate-rate of oxygen consumption technique to estimate rate of energy expenditure in adult king penguins raising a chick, in combination with dat...
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Historically, king penguin populations on Macquarie Island have suffered greatly from human exploitation. Two large colonies on the island were drastically reduced to a single small colony as a result of harvesting for the blubber oil industry. However, recent conservation efforts have resulted in the king penguin population expanding in numbers and range to recolonize previous as well as new s...
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This study examines the metabolic fate of total and individual yolk fatty acids (FA) during the embryonic development of the king penguin, a seabird characterized by prolonged incubation (53 days) and hatching (3 days) periods, and a high n-3/n-6 polyunsaturated FA ratio in the egg. Of the approximately 15 g of total FA initially present in the egg lipid, 87% was transferred to the embryo by th...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2019
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.216010