Evaluating the prudence of parents: daily energy expenditure throughout the annual cycle of a free-ranging bird, the macaroni penguin Eudyptes chrysolophus
We measured daily energy expenditure (DEE) continuously for a whole year in a free ranging bird, the macaroni penguin Eudyptes chrysolophus. We combined these measurements with concurrently recorded foraging behaviour, and literature information on body mass and dietary factors to estimate prey cons...
Published in: | Journal of Avian Biology |
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Wiley-Blackwell
2009
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Online Access: | http://nora.nerc.ac.uk/id/eprint/10973/ http://www3.interscience.wiley.com/cgi-bin/fulltext/122563891/PDFSTART |
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ftnerc:oai:nora.nerc.ac.uk:10973 2023-05-15T16:08:22+02:00 Evaluating the prudence of parents: daily energy expenditure throughout the annual cycle of a free-ranging bird, the macaroni penguin Eudyptes chrysolophus Green, Jonathan A. Boyd, Ian L. Woakes, Anthony J. Warren, Nicholas L. Butler, Patrick J. 2009 http://nora.nerc.ac.uk/id/eprint/10973/ http://www3.interscience.wiley.com/cgi-bin/fulltext/122563891/PDFSTART unknown Wiley-Blackwell Green, Jonathan A.; Boyd, Ian L.; Woakes, Anthony J.; Warren, Nicholas L.; Butler, Patrick J. 2009 Evaluating the prudence of parents: daily energy expenditure throughout the annual cycle of a free-ranging bird, the macaroni penguin Eudyptes chrysolophus. Journal of Avian Biology, 40 (5). 529-538. https://doi.org/10.1111/j.1600-048X.2009.04639.x <https://doi.org/10.1111/j.1600-048X.2009.04639.x> Marine Sciences Zoology Ecology and Environment Publication - Article PeerReviewed 2009 ftnerc https://doi.org/10.1111/j.1600-048X.2009.04639.x 2023-02-04T19:27:03Z We measured daily energy expenditure (DEE) continuously for a whole year in a free ranging bird, the macaroni penguin Eudyptes chrysolophus. We combined these measurements with concurrently recorded foraging behaviour, and literature information on body mass and dietary factors to estimate prey consumption rates and foraging success. DEE was at a maximum during late chick-rearing but was equally high during all other active phases of the breeding season. DEE was approximately 4xresting metabolic rate, which accords with established theory and suggests a common 'energetic ceiling' throughout the summer period. However, whether this represents a maximum in physiological capacity, or a rate which optimises fitness is still unclear. Rates of prey consumption and foraging success followed different patterns from daily energy expenditure. Daily prey consumption was high as the penguins prepared for long fasts associated with moulting and incubation but relatively low during chick-rearing, when foraging areas were restricted and foraging success lower. It appears that the energy intake of macaroni penguins is subject to extrinisic or environmental constraints rather than to intrinsic physiological limits. Article in Journal/Newspaper Eudyptes chrysolophus Macaroni penguin Natural Environment Research Council: NERC Open Research Archive Dee ENVELOPE(-59.767,-59.767,-62.433,-62.433) Journal of Avian Biology 40 5 529 538 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Marine Sciences Zoology Ecology and Environment |
spellingShingle |
Marine Sciences Zoology Ecology and Environment Green, Jonathan A. Boyd, Ian L. Woakes, Anthony J. Warren, Nicholas L. Butler, Patrick J. Evaluating the prudence of parents: daily energy expenditure throughout the annual cycle of a free-ranging bird, the macaroni penguin Eudyptes chrysolophus |
topic_facet |
Marine Sciences Zoology Ecology and Environment |
description |
We measured daily energy expenditure (DEE) continuously for a whole year in a free ranging bird, the macaroni penguin Eudyptes chrysolophus. We combined these measurements with concurrently recorded foraging behaviour, and literature information on body mass and dietary factors to estimate prey consumption rates and foraging success. DEE was at a maximum during late chick-rearing but was equally high during all other active phases of the breeding season. DEE was approximately 4xresting metabolic rate, which accords with established theory and suggests a common 'energetic ceiling' throughout the summer period. However, whether this represents a maximum in physiological capacity, or a rate which optimises fitness is still unclear. Rates of prey consumption and foraging success followed different patterns from daily energy expenditure. Daily prey consumption was high as the penguins prepared for long fasts associated with moulting and incubation but relatively low during chick-rearing, when foraging areas were restricted and foraging success lower. It appears that the energy intake of macaroni penguins is subject to extrinisic or environmental constraints rather than to intrinsic physiological limits. |
format |
Article in Journal/Newspaper |
author |
Green, Jonathan A. Boyd, Ian L. Woakes, Anthony J. Warren, Nicholas L. Butler, Patrick J. |
author_facet |
Green, Jonathan A. Boyd, Ian L. Woakes, Anthony J. Warren, Nicholas L. Butler, Patrick J. |
author_sort |
Green, Jonathan A. |
title |
Evaluating the prudence of parents: daily energy expenditure throughout the annual cycle of a free-ranging bird, the macaroni penguin Eudyptes chrysolophus |
title_short |
Evaluating the prudence of parents: daily energy expenditure throughout the annual cycle of a free-ranging bird, the macaroni penguin Eudyptes chrysolophus |
title_full |
Evaluating the prudence of parents: daily energy expenditure throughout the annual cycle of a free-ranging bird, the macaroni penguin Eudyptes chrysolophus |
title_fullStr |
Evaluating the prudence of parents: daily energy expenditure throughout the annual cycle of a free-ranging bird, the macaroni penguin Eudyptes chrysolophus |
title_full_unstemmed |
Evaluating the prudence of parents: daily energy expenditure throughout the annual cycle of a free-ranging bird, the macaroni penguin Eudyptes chrysolophus |
title_sort |
evaluating the prudence of parents: daily energy expenditure throughout the annual cycle of a free-ranging bird, the macaroni penguin eudyptes chrysolophus |
publisher |
Wiley-Blackwell |
publishDate |
2009 |
url |
http://nora.nerc.ac.uk/id/eprint/10973/ http://www3.interscience.wiley.com/cgi-bin/fulltext/122563891/PDFSTART |
long_lat |
ENVELOPE(-59.767,-59.767,-62.433,-62.433) |
geographic |
Dee |
geographic_facet |
Dee |
genre |
Eudyptes chrysolophus Macaroni penguin |
genre_facet |
Eudyptes chrysolophus Macaroni penguin |
op_relation |
Green, Jonathan A.; Boyd, Ian L.; Woakes, Anthony J.; Warren, Nicholas L.; Butler, Patrick J. 2009 Evaluating the prudence of parents: daily energy expenditure throughout the annual cycle of a free-ranging bird, the macaroni penguin Eudyptes chrysolophus. Journal of Avian Biology, 40 (5). 529-538. https://doi.org/10.1111/j.1600-048X.2009.04639.x <https://doi.org/10.1111/j.1600-048X.2009.04639.x> |
op_doi |
https://doi.org/10.1111/j.1600-048X.2009.04639.x |
container_title |
Journal of Avian Biology |
container_volume |
40 |
container_issue |
5 |
container_start_page |
529 |
op_container_end_page |
538 |
_version_ |
1766404418543026176 |