Sex differences in Adelie penguin foraging strategies
Consistent sex differences in foraging trip duration, feeding locality and diet of breeding Adelie penguins (Pygoscelis adeliae) were demonstrated at two widely separated locations over several breeding seasons. Differences in foraging behaviour were most pronounced during the guard stage of chick r...
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Format: | Article in Journal/Newspaper |
Language: | English |
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1998
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Online Access: | http://hdl.handle.net/11365/10556 https://doi.org/10.1007/s003000050301 |
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ftunivsiena:oai:usiena-air.unisi.it:11365/10556 2024-04-21T07:43:43+00:00 Sex differences in Adelie penguin foraging strategies CLARKE, J. MANLY, B. KERRY, K. GARDNER, H. FRANCHI, E. CORSOLINI, S. FOCARDI, S. Clarke, J. Manly, B. Kerry, K. Gardner, H. Franchi, E. Corsolini, S. Focardi, S. 1998 STAMPA http://hdl.handle.net/11365/10556 https://doi.org/10.1007/s003000050301 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000076131700002 volume:20 issue:4 firstpage:248 lastpage:258 numberofpages:11 journal:POLAR BIOLOGY http://hdl.handle.net/11365/10556 doi:10.1007/s003000050301 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0031688997 info:eu-repo/semantics/closedAccess info:eu-repo/semantics/article 1998 ftunivsiena https://doi.org/10.1007/s003000050301 2024-03-28T00:48:09Z Consistent sex differences in foraging trip duration, feeding locality and diet of breeding Adelie penguins (Pygoscelis adeliae) were demonstrated at two widely separated locations over several breeding seasons. Differences in foraging behaviour were most pronounced during the guard stage of chick rearing. Female penguins made on average longer foraging trips than males, ranged greater distances more frequently and consumed larger quantities of krill. In contrast, males made shorter journeys to closer foraging grounds during the guard period and fed more extensively on fish throughout chick rearing. Mean guard stage foraging trip durations over four seasons at Bechervaise Island, Eastern Antarctica and over two seasons at Edmonson Point, Ross Sea ranged between 31 and 73 h for females and 25 and 36 h for males. Ninety percent of males tracked from Bechervaise Island by satellite during the first 3 weeks post-hatch foraged within 20 km of the colony, while the majority (60%) of females travelled to the edge of the continental shelf (80-120 km from the colony) to feed during this period. Article in Journal/Newspaper Adelie penguin Antarc* Antarctica Pygoscelis adeliae Ross Sea Università degli Studi di Siena: USiena air Polar Biology 20 4 248 258 |
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Open Polar |
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Università degli Studi di Siena: USiena air |
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ftunivsiena |
language |
English |
description |
Consistent sex differences in foraging trip duration, feeding locality and diet of breeding Adelie penguins (Pygoscelis adeliae) were demonstrated at two widely separated locations over several breeding seasons. Differences in foraging behaviour were most pronounced during the guard stage of chick rearing. Female penguins made on average longer foraging trips than males, ranged greater distances more frequently and consumed larger quantities of krill. In contrast, males made shorter journeys to closer foraging grounds during the guard period and fed more extensively on fish throughout chick rearing. Mean guard stage foraging trip durations over four seasons at Bechervaise Island, Eastern Antarctica and over two seasons at Edmonson Point, Ross Sea ranged between 31 and 73 h for females and 25 and 36 h for males. Ninety percent of males tracked from Bechervaise Island by satellite during the first 3 weeks post-hatch foraged within 20 km of the colony, while the majority (60%) of females travelled to the edge of the continental shelf (80-120 km from the colony) to feed during this period. |
author2 |
Clarke, J. Manly, B. Kerry, K. Gardner, H. Franchi, E. Corsolini, S. Focardi, S. |
format |
Article in Journal/Newspaper |
author |
CLARKE, J. MANLY, B. KERRY, K. GARDNER, H. FRANCHI, E. CORSOLINI, S. FOCARDI, S. |
spellingShingle |
CLARKE, J. MANLY, B. KERRY, K. GARDNER, H. FRANCHI, E. CORSOLINI, S. FOCARDI, S. Sex differences in Adelie penguin foraging strategies |
author_facet |
CLARKE, J. MANLY, B. KERRY, K. GARDNER, H. FRANCHI, E. CORSOLINI, S. FOCARDI, S. |
author_sort |
CLARKE, J. |
title |
Sex differences in Adelie penguin foraging strategies |
title_short |
Sex differences in Adelie penguin foraging strategies |
title_full |
Sex differences in Adelie penguin foraging strategies |
title_fullStr |
Sex differences in Adelie penguin foraging strategies |
title_full_unstemmed |
Sex differences in Adelie penguin foraging strategies |
title_sort |
sex differences in adelie penguin foraging strategies |
publishDate |
1998 |
url |
http://hdl.handle.net/11365/10556 https://doi.org/10.1007/s003000050301 |
genre |
Adelie penguin Antarc* Antarctica Pygoscelis adeliae Ross Sea |
genre_facet |
Adelie penguin Antarc* Antarctica Pygoscelis adeliae Ross Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000076131700002 volume:20 issue:4 firstpage:248 lastpage:258 numberofpages:11 journal:POLAR BIOLOGY http://hdl.handle.net/11365/10556 doi:10.1007/s003000050301 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0031688997 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/s003000050301 |
container_title |
Polar Biology |
container_volume |
20 |
container_issue |
4 |
container_start_page |
248 |
op_container_end_page |
258 |
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1796952375920951296 |