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 con...
Published in: | Journal of Avian Biology |
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Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Wiley
2009
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Online Access: | http://dx.doi.org/10.1111/j.1600-048x.2009.04639.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-048X.2009.04639.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-048X.2009.04639.x |
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crwiley:10.1111/j.1600-048x.2009.04639.x 2024-10-13T14:07:01+00:00 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://dx.doi.org/10.1111/j.1600-048x.2009.04639.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-048X.2009.04639.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-048X.2009.04639.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Avian Biology volume 40, issue 5, page 529-538 ISSN 0908-8857 1600-048X journal-article 2009 crwiley https://doi.org/10.1111/j.1600-048x.2009.04639.x 2024-09-17T04:48:18Z 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 4×resting 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 Wiley Online Library Dee ENVELOPE(-59.767,-59.767,-62.433,-62.433) Journal of Avian Biology 40 5 529 538 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
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 4×resting 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. |
spellingShingle |
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 |
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 |
publishDate |
2009 |
url |
http://dx.doi.org/10.1111/j.1600-048x.2009.04639.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-048X.2009.04639.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-048X.2009.04639.x |
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_source |
Journal of Avian Biology volume 40, issue 5, page 529-538 ISSN 0908-8857 1600-048X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
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_ |
1812813273321439232 |