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 |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2009
|
Subjects: | |
Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/evaluating-the-prudence-of-parents-daily-energy-expenditure-throughout-the-annual-cycle-of-a-freeranging-bird-the-macaroni-penguin-eudyptes-chrysolophus(f3784d63-527d-47c9-ab77-6d7b31aa2252).html https://doi.org/10.1111/j.1600-048X.2009.04639.x http://www.scopus.com/inward/record.url?scp=70349500227&partnerID=8YFLogxK |
id |
ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/f3784d63-527d-47c9-ab77-6d7b31aa2252 |
---|---|
record_format |
openpolar |
spelling |
ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/f3784d63-527d-47c9-ab77-6d7b31aa2252 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, J L Boyd, Ian Lamont Woakes, A J Warren, N L Butler, P J 2009 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/evaluating-the-prudence-of-parents-daily-energy-expenditure-throughout-the-annual-cycle-of-a-freeranging-bird-the-macaroni-penguin-eudyptes-chrysolophus(f3784d63-527d-47c9-ab77-6d7b31aa2252).html https://doi.org/10.1111/j.1600-048X.2009.04639.x http://www.scopus.com/inward/record.url?scp=70349500227&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Green , J L , Boyd , I L , Woakes , A J , Warren , N L & Butler , P 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 , vol. 40 , pp. 529-538 . https://doi.org/10.1111/j.1600-048X.2009.04639.x article 2009 ftunstandrewcris https://doi.org/10.1111/j.1600-048X.2009.04639.x 2021-12-26T14:14:57Z 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 University of St Andrews: Research Portal Dee ENVELOPE(-59.767,-59.767,-62.433,-62.433) Journal of Avian Biology 40 5 529 538 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
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, J L Boyd, Ian Lamont Woakes, A J Warren, N L Butler, P J |
spellingShingle |
Green, J L Boyd, Ian Lamont Woakes, A J Warren, N L Butler, P 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, J L Boyd, Ian Lamont Woakes, A J Warren, N L Butler, P J |
author_sort |
Green, J L |
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 |
publishDate |
2009 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/evaluating-the-prudence-of-parents-daily-energy-expenditure-throughout-the-annual-cycle-of-a-freeranging-bird-the-macaroni-penguin-eudyptes-chrysolophus(f3784d63-527d-47c9-ab77-6d7b31aa2252).html https://doi.org/10.1111/j.1600-048X.2009.04639.x http://www.scopus.com/inward/record.url?scp=70349500227&partnerID=8YFLogxK |
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 |
Green , J L , Boyd , I L , Woakes , A J , Warren , N L & Butler , P 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 , vol. 40 , pp. 529-538 . https://doi.org/10.1111/j.1600-048X.2009.04639.x |
op_rights |
info:eu-repo/semantics/restrictedAccess |
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_ |
1766404418209579008 |