Feather Corticosterone Levels on Wintering Grounds Have No Carry-Over Effects on Breeding among Three Populations of Great Skuas (Stercorarius skua)
Environmental conditions encountered by migratory seabirds in their wintering areas can shape their fitness. However, the underlying physiological mechanisms remain largely unknown as birds are relatively inaccessible during winter. To assess physiological condition during this period, we measured c...
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ftpubmed:oai:pubmedcentral.nih.gov:4070953 2023-05-15T15:44:50+02:00 Feather Corticosterone Levels on Wintering Grounds Have No Carry-Over Effects on Breeding among Three Populations of Great Skuas (Stercorarius skua) Bourgeon, Sophie Leat, Eliza H. K. Magnusdóttir, Ellen Furness, Robert W. Strøm, Hallvard Petersen, Aevar Gabrielsen, Geir W. Hanssen, Sveinn Are Bustnes, Jan Ove 2014-06-25 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4070953 http://www.ncbi.nlm.nih.gov/pubmed/24964085 https://doi.org/10.1371/journal.pone.0100439 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/24964085 http://dx.doi.org/10.1371/journal.pone.0100439 This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2014 ftpubmed https://doi.org/10.1371/journal.pone.0100439 2014-06-29T01:00:34Z Environmental conditions encountered by migratory seabirds in their wintering areas can shape their fitness. However, the underlying physiological mechanisms remain largely unknown as birds are relatively inaccessible during winter. To assess physiological condition during this period, we measured corticosterone concentrations in winter-grown primary feathers of female great skuas (Stercorarius skua) from three breeding colonies (Bjørnøya, Iceland, Shetland) with wintering areas identified from characteristic stable isotope signatures. We subsequently compared winter feather corticosterone levels between three wintering areas (Africa, Europe and America). Among females breeding in 2009, we found significant differences in feather corticosterone levels between wintering areas. Surprisingly, levels were significantly higher in Africa despite seemingly better local ecological factors (based on lower foraging effort). Moreover, contrary to our predictions, females sharing the same wintering grounds showed significant differences in feather corticosterone levels depending on their colony of origin suggesting that some skuas could be using suboptimal wintering areas. Among females wintering in Africa, Shetland females showed feather corticosterone levels on average 22% lower than Bjørnøya and Iceland females. Finally, the lack of significant relationships between winter feather corticosterone levels and any of the breeding phenology traits does not support the hypothesis of potential carry-over effects of winter feather corticosterone. Yet, the fitness consequences of elevated feather corticosterone levels remain to be determined. Text Bjørnøya Iceland Stercorarius skua PubMed Central (PMC) Bjørnøya ENVELOPE(-67.250,-67.250,-68.151,-68.151) PLoS ONE 9 6 e100439 |
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English |
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Research Article |
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Research Article Bourgeon, Sophie Leat, Eliza H. K. Magnusdóttir, Ellen Furness, Robert W. Strøm, Hallvard Petersen, Aevar Gabrielsen, Geir W. Hanssen, Sveinn Are Bustnes, Jan Ove Feather Corticosterone Levels on Wintering Grounds Have No Carry-Over Effects on Breeding among Three Populations of Great Skuas (Stercorarius skua) |
topic_facet |
Research Article |
description |
Environmental conditions encountered by migratory seabirds in their wintering areas can shape their fitness. However, the underlying physiological mechanisms remain largely unknown as birds are relatively inaccessible during winter. To assess physiological condition during this period, we measured corticosterone concentrations in winter-grown primary feathers of female great skuas (Stercorarius skua) from three breeding colonies (Bjørnøya, Iceland, Shetland) with wintering areas identified from characteristic stable isotope signatures. We subsequently compared winter feather corticosterone levels between three wintering areas (Africa, Europe and America). Among females breeding in 2009, we found significant differences in feather corticosterone levels between wintering areas. Surprisingly, levels were significantly higher in Africa despite seemingly better local ecological factors (based on lower foraging effort). Moreover, contrary to our predictions, females sharing the same wintering grounds showed significant differences in feather corticosterone levels depending on their colony of origin suggesting that some skuas could be using suboptimal wintering areas. Among females wintering in Africa, Shetland females showed feather corticosterone levels on average 22% lower than Bjørnøya and Iceland females. Finally, the lack of significant relationships between winter feather corticosterone levels and any of the breeding phenology traits does not support the hypothesis of potential carry-over effects of winter feather corticosterone. Yet, the fitness consequences of elevated feather corticosterone levels remain to be determined. |
format |
Text |
author |
Bourgeon, Sophie Leat, Eliza H. K. Magnusdóttir, Ellen Furness, Robert W. Strøm, Hallvard Petersen, Aevar Gabrielsen, Geir W. Hanssen, Sveinn Are Bustnes, Jan Ove |
author_facet |
Bourgeon, Sophie Leat, Eliza H. K. Magnusdóttir, Ellen Furness, Robert W. Strøm, Hallvard Petersen, Aevar Gabrielsen, Geir W. Hanssen, Sveinn Are Bustnes, Jan Ove |
author_sort |
Bourgeon, Sophie |
title |
Feather Corticosterone Levels on Wintering Grounds Have No Carry-Over Effects on Breeding among Three Populations of Great Skuas (Stercorarius skua) |
title_short |
Feather Corticosterone Levels on Wintering Grounds Have No Carry-Over Effects on Breeding among Three Populations of Great Skuas (Stercorarius skua) |
title_full |
Feather Corticosterone Levels on Wintering Grounds Have No Carry-Over Effects on Breeding among Three Populations of Great Skuas (Stercorarius skua) |
title_fullStr |
Feather Corticosterone Levels on Wintering Grounds Have No Carry-Over Effects on Breeding among Three Populations of Great Skuas (Stercorarius skua) |
title_full_unstemmed |
Feather Corticosterone Levels on Wintering Grounds Have No Carry-Over Effects on Breeding among Three Populations of Great Skuas (Stercorarius skua) |
title_sort |
feather corticosterone levels on wintering grounds have no carry-over effects on breeding among three populations of great skuas (stercorarius skua) |
publisher |
Public Library of Science |
publishDate |
2014 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4070953 http://www.ncbi.nlm.nih.gov/pubmed/24964085 https://doi.org/10.1371/journal.pone.0100439 |
long_lat |
ENVELOPE(-67.250,-67.250,-68.151,-68.151) |
geographic |
Bjørnøya |
geographic_facet |
Bjørnøya |
genre |
Bjørnøya Iceland Stercorarius skua |
genre_facet |
Bjørnøya Iceland Stercorarius skua |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/24964085 http://dx.doi.org/10.1371/journal.pone.0100439 |
op_rights |
This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0100439 |
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PLoS ONE |
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9 |
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6 |
container_start_page |
e100439 |
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1766379199423053824 |