Different means to the same end: long-distance migrant seabirds from two colonies differ in behaviour, despite common wintering grounds.
Although seabirds that are trans-equatorial migrants show apparently broad overlap among populations in the non-breeding season, such large-scale pattern may conceal subtle but nevertheless key differences in migratory behaviour. These specializations could reflect adaptation to different environmen...
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ftdoajarticles:oai:doaj.org/article:70d27311797747baa4af9a5b999bbf77 2023-05-15T17:34:22+02:00 Different means to the same end: long-distance migrant seabirds from two colonies differ in behaviour, despite common wintering grounds. Paulo Catry Maria P Dias Richard A Phillips José P Granadeiro 2011-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0026079 https://doaj.org/article/70d27311797747baa4af9a5b999bbf77 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC3191162?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0026079 https://doaj.org/article/70d27311797747baa4af9a5b999bbf77 PLoS ONE, Vol 6, Iss 10, p e26079 (2011) Medicine R Science Q article 2011 ftdoajarticles https://doi.org/10.1371/journal.pone.0026079 2022-12-30T21:56:20Z Although seabirds that are trans-equatorial migrants show apparently broad overlap among populations in the non-breeding season, such large-scale pattern may conceal subtle but nevertheless key differences in migratory behaviour. These specializations could reflect adaptation to different environments during the breeding season, carry-over effects from the breeding to the nonbreeding period, or asymmetries in competitive ability of birds of different origin. We compared the migratory and wintering behaviour of Cory's shearwaters Calonectris diomedea nesting in Berlengas and in the Selvagens, two colonies in contrasting oceanographic environments, separated by ca. 1200 km. Although no differences were found in winter distribution, there was a marked divergence in timing, route and the use of staging areas during the postbreeding (autumn) migration. Birds from Berlengas typically travelled to oceanic waters in the North Atlantic for an extended stopover, whereas those from Selvagens rarely did so. In the South Atlantic, birds from Selvagens spent more time in flight, perhaps because they had higher energy and nutrient requirements for feather replacement compared to birds from Berlengas, which moult more flight feathers during breeding. Stable isotope analyses of feathers suggested that this variation in activity patterns was unrelated to trophic ecology. Differences in migration routes and stopovers may expose populations to distinct threats, and should be taken into consideration when defining units for conservation purposes and developing appropriate management strategies. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles PLoS ONE 6 10 e26079 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
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English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Paulo Catry Maria P Dias Richard A Phillips José P Granadeiro Different means to the same end: long-distance migrant seabirds from two colonies differ in behaviour, despite common wintering grounds. |
topic_facet |
Medicine R Science Q |
description |
Although seabirds that are trans-equatorial migrants show apparently broad overlap among populations in the non-breeding season, such large-scale pattern may conceal subtle but nevertheless key differences in migratory behaviour. These specializations could reflect adaptation to different environments during the breeding season, carry-over effects from the breeding to the nonbreeding period, or asymmetries in competitive ability of birds of different origin. We compared the migratory and wintering behaviour of Cory's shearwaters Calonectris diomedea nesting in Berlengas and in the Selvagens, two colonies in contrasting oceanographic environments, separated by ca. 1200 km. Although no differences were found in winter distribution, there was a marked divergence in timing, route and the use of staging areas during the postbreeding (autumn) migration. Birds from Berlengas typically travelled to oceanic waters in the North Atlantic for an extended stopover, whereas those from Selvagens rarely did so. In the South Atlantic, birds from Selvagens spent more time in flight, perhaps because they had higher energy and nutrient requirements for feather replacement compared to birds from Berlengas, which moult more flight feathers during breeding. Stable isotope analyses of feathers suggested that this variation in activity patterns was unrelated to trophic ecology. Differences in migration routes and stopovers may expose populations to distinct threats, and should be taken into consideration when defining units for conservation purposes and developing appropriate management strategies. |
format |
Article in Journal/Newspaper |
author |
Paulo Catry Maria P Dias Richard A Phillips José P Granadeiro |
author_facet |
Paulo Catry Maria P Dias Richard A Phillips José P Granadeiro |
author_sort |
Paulo Catry |
title |
Different means to the same end: long-distance migrant seabirds from two colonies differ in behaviour, despite common wintering grounds. |
title_short |
Different means to the same end: long-distance migrant seabirds from two colonies differ in behaviour, despite common wintering grounds. |
title_full |
Different means to the same end: long-distance migrant seabirds from two colonies differ in behaviour, despite common wintering grounds. |
title_fullStr |
Different means to the same end: long-distance migrant seabirds from two colonies differ in behaviour, despite common wintering grounds. |
title_full_unstemmed |
Different means to the same end: long-distance migrant seabirds from two colonies differ in behaviour, despite common wintering grounds. |
title_sort |
different means to the same end: long-distance migrant seabirds from two colonies differ in behaviour, despite common wintering grounds. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2011 |
url |
https://doi.org/10.1371/journal.pone.0026079 https://doaj.org/article/70d27311797747baa4af9a5b999bbf77 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
PLoS ONE, Vol 6, Iss 10, p e26079 (2011) |
op_relation |
http://europepmc.org/articles/PMC3191162?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0026079 https://doaj.org/article/70d27311797747baa4af9a5b999bbf77 |
op_doi |
https://doi.org/10.1371/journal.pone.0026079 |
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PLoS ONE |
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6 |
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10 |
container_start_page |
e26079 |
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