Foraging ecology during nesting influences body size in a pursuit-diving seabird
International audience ABSTRACT: Causes and consequences of differences in seabird foraging strategies between breeding colonies are not well understood. We tested whether body size of a pursuit-diving seabird, the thick-billed murre Uria lomvia, differs between breeding colonies and, if so, how siz...
Published in: | Marine Ecology Progress Series |
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Online Access: | https://hal.umontpellier.fr/hal-01920605 https://doi.org/10.3354/meps11388 |
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ftunivnantes:oai:HAL:hal-01920605v1 2023-05-15T15:43:56+02:00 Foraging ecology during nesting influences body size in a pursuit-diving seabird Paredes, Rosana Orben, Rachael, Roby, Daniel, Irons, David, Young, Rebecca Renner, Heather Tremblay, Yann Will, Alexis Harding, Ann, Kitaysky, Alexander Oregon State University (OSU) University of California Santa Cruz (UC Santa Cruz) University of California (UC) University of Alaska Fairbanks (UAF) MARine Biodiversity Exploitation and Conservation (UMR MARBEC) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) Alaska Pacific University 2015-08-06 https://hal.umontpellier.fr/hal-01920605 https://doi.org/10.3354/meps11388 en eng HAL CCSD Inter Research info:eu-repo/semantics/altIdentifier/doi/10.3354/meps11388 hal-01920605 https://hal.umontpellier.fr/hal-01920605 doi:10.3354/meps11388 IRD: fdi:010064924 ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.umontpellier.fr/hal-01920605 Marine Ecology Progress Series, 2015, 533, pp.261 - 276. ⟨10.3354/meps11388⟩ [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.MCG]Environmental Sciences/Global Changes [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems info:eu-repo/semantics/article Journal articles 2015 ftunivnantes https://doi.org/10.3354/meps11388 2022-11-30T01:45:32Z International audience ABSTRACT: Causes and consequences of differences in seabird foraging strategies between breeding colonies are not well understood. We tested whether body size of a pursuit-diving seabird, the thick-billed murre Uria lomvia, differs between breeding colonies and, if so, how size differences can be understood in the context of differences in foraging behavior, habitat use, and breeding performance. We measured adult murres over 3 seasons (2008 to 2010) at 2 of the Pribilof Islands, St. Paul and St. George, located on the continental shelf of the Bering Sea at different distances from the shelf break. Body mass and size were positively associated with deep diving and negatively associated with long flights, suggesting morphology influences foraging and commuting efficiency. Murres from St. Paul (farther from the shelf break) were larger than those from St. George (nearer the shelf break), foraged exclusively in the middle shelf domain, made deep dives during daylight, and fed on larger benthic prey. In contrast, smaller murres from St. George commuted greater distances to beyond the shelf break, made shallow dives at night, and fed on smaller, high-energy, schooling, vertical-migrating prey. Both foraging strategies resulted in similar chick-feeding rates and fledging success. The largest and the smallest murres experienced less stress during breeding compared to intermediate-sized murres, suggesting divergent selection for body size between islands. Nesting murres, as central-place foragers, may experience strong selection pressure on body size and other adaptive traits that reflect differences between breeding colonies in foraging ecology and the acquisition of resources for reproduction. Article in Journal/Newspaper Bering Sea thick-billed murre Uria lomvia uria Université de Nantes: HAL-UNIV-NANTES Bering Sea Marine Ecology Progress Series 533 261 276 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.MCG]Environmental Sciences/Global Changes [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems |
spellingShingle |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.MCG]Environmental Sciences/Global Changes [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems Paredes, Rosana Orben, Rachael, Roby, Daniel, Irons, David, Young, Rebecca Renner, Heather Tremblay, Yann Will, Alexis Harding, Ann, Kitaysky, Alexander Foraging ecology during nesting influences body size in a pursuit-diving seabird |
topic_facet |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.MCG]Environmental Sciences/Global Changes [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems |
description |
International audience ABSTRACT: Causes and consequences of differences in seabird foraging strategies between breeding colonies are not well understood. We tested whether body size of a pursuit-diving seabird, the thick-billed murre Uria lomvia, differs between breeding colonies and, if so, how size differences can be understood in the context of differences in foraging behavior, habitat use, and breeding performance. We measured adult murres over 3 seasons (2008 to 2010) at 2 of the Pribilof Islands, St. Paul and St. George, located on the continental shelf of the Bering Sea at different distances from the shelf break. Body mass and size were positively associated with deep diving and negatively associated with long flights, suggesting morphology influences foraging and commuting efficiency. Murres from St. Paul (farther from the shelf break) were larger than those from St. George (nearer the shelf break), foraged exclusively in the middle shelf domain, made deep dives during daylight, and fed on larger benthic prey. In contrast, smaller murres from St. George commuted greater distances to beyond the shelf break, made shallow dives at night, and fed on smaller, high-energy, schooling, vertical-migrating prey. Both foraging strategies resulted in similar chick-feeding rates and fledging success. The largest and the smallest murres experienced less stress during breeding compared to intermediate-sized murres, suggesting divergent selection for body size between islands. Nesting murres, as central-place foragers, may experience strong selection pressure on body size and other adaptive traits that reflect differences between breeding colonies in foraging ecology and the acquisition of resources for reproduction. |
author2 |
Oregon State University (OSU) University of California Santa Cruz (UC Santa Cruz) University of California (UC) University of Alaska Fairbanks (UAF) MARine Biodiversity Exploitation and Conservation (UMR MARBEC) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) Alaska Pacific University |
format |
Article in Journal/Newspaper |
author |
Paredes, Rosana Orben, Rachael, Roby, Daniel, Irons, David, Young, Rebecca Renner, Heather Tremblay, Yann Will, Alexis Harding, Ann, Kitaysky, Alexander |
author_facet |
Paredes, Rosana Orben, Rachael, Roby, Daniel, Irons, David, Young, Rebecca Renner, Heather Tremblay, Yann Will, Alexis Harding, Ann, Kitaysky, Alexander |
author_sort |
Paredes, Rosana |
title |
Foraging ecology during nesting influences body size in a pursuit-diving seabird |
title_short |
Foraging ecology during nesting influences body size in a pursuit-diving seabird |
title_full |
Foraging ecology during nesting influences body size in a pursuit-diving seabird |
title_fullStr |
Foraging ecology during nesting influences body size in a pursuit-diving seabird |
title_full_unstemmed |
Foraging ecology during nesting influences body size in a pursuit-diving seabird |
title_sort |
foraging ecology during nesting influences body size in a pursuit-diving seabird |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.umontpellier.fr/hal-01920605 https://doi.org/10.3354/meps11388 |
geographic |
Bering Sea |
geographic_facet |
Bering Sea |
genre |
Bering Sea thick-billed murre Uria lomvia uria |
genre_facet |
Bering Sea thick-billed murre Uria lomvia uria |
op_source |
ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.umontpellier.fr/hal-01920605 Marine Ecology Progress Series, 2015, 533, pp.261 - 276. ⟨10.3354/meps11388⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps11388 hal-01920605 https://hal.umontpellier.fr/hal-01920605 doi:10.3354/meps11388 IRD: fdi:010064924 |
op_doi |
https://doi.org/10.3354/meps11388 |
container_title |
Marine Ecology Progress Series |
container_volume |
533 |
container_start_page |
261 |
op_container_end_page |
276 |
_version_ |
1766378144580763648 |