Completing the picture: using vertebrae as well as otoliths in diet analysis reveals new preferred prey of great skuas

10 pages, 4 figures, 3 figures.-- This article is licensed under a Creative Commons Attribution 4.0 International License

Detalhes bibliográficos
Autores: Quer, Susanna, Pierce, Graham J., Waggershauser, Cristian N., Gilbert, Lucy
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/359774
Acesso em linha:http://hdl.handle.net/10261/359774
Access Level:acceso abierto
Palavra-chave:Fish
Otoliths
Vertebrae
Seabird diet
Pellets
Diet methods
Great skua
Stercorarius skua
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spelling Completing the picture: using vertebrae as well as otoliths in diet analysis reveals new preferred prey of great skuasQuer, SusannaPierce, Graham J.Waggershauser, Cristian N.Gilbert, LucyFishOtolithsVertebraeSeabird dietPelletsDiet methodsGreat skuaStercorarius skua10 pages, 4 figures, 3 figures.-- This article is licensed under a Creative Commons Attribution 4.0 International LicenseKnowledge of the diet of marine predators such as seabirds is fundamental to understanding the ecological cascades they may influence and the impact that environmental changes may have on them. Diet analysis of seabirds frequently relies on the identification of fish otoliths in pellets. However, it is recognised that the true dietary importance of fish with small and fragile otoliths is likely underestimated, requiring an additional method. In this study, we compared the identification of otoliths with that of vertebrae in pellets to gain a more complete picture of seabird diet. We identified fish otoliths and vertebrae from 2584 great skua Stercorarius skua pellets collected between 2014 and 2017 from five colonies in Scotland. Diet varied markedly between colonies, comprising mostly fish in Shetland and mostly birds in St Kilda. 10% of pellets contained otoliths compared to 70% with fish vertebrae. Atlantic herring Clupea harengus and Atlantic mackerel Scomber scombrus were the most common fish species at all colonies when using vertebrae in contrast to being virtually absent when using otoliths. Conversely, the occurrence of Norway pout Trisopterus esmarkii and pollock Pollachius pollachius otoliths was six and eight times, respectively, higher than for vertebrae. Therefore, combining data from both otoliths and vertebrae provides a more complete profile of the fish component of seabird diet. This is fundamental to improving our understanding of the impacts of marine management policies on seabirds, as well as how changes in the population size of such seabird species might affect their prey speciesThis project was conducted without financial supportPeer reviewedSpringerConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/359774reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésThe underlying dataset has been published as supplementary material of the article in the publishers platform at DOI https://doi.org/10.1007/s00227-024-04441-2https://doi.org/10.1007/s00227-024-04441-2Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3597742026-05-22T06:33:51Z
dc.title.none.fl_str_mv Completing the picture: using vertebrae as well as otoliths in diet analysis reveals new preferred prey of great skuas
title Completing the picture: using vertebrae as well as otoliths in diet analysis reveals new preferred prey of great skuas
spellingShingle Completing the picture: using vertebrae as well as otoliths in diet analysis reveals new preferred prey of great skuas
Quer, Susanna
Fish
Otoliths
Vertebrae
Seabird diet
Pellets
Diet methods
Great skua
Stercorarius skua
title_short Completing the picture: using vertebrae as well as otoliths in diet analysis reveals new preferred prey of great skuas
title_full Completing the picture: using vertebrae as well as otoliths in diet analysis reveals new preferred prey of great skuas
title_fullStr Completing the picture: using vertebrae as well as otoliths in diet analysis reveals new preferred prey of great skuas
title_full_unstemmed Completing the picture: using vertebrae as well as otoliths in diet analysis reveals new preferred prey of great skuas
title_sort Completing the picture: using vertebrae as well as otoliths in diet analysis reveals new preferred prey of great skuas
dc.creator.none.fl_str_mv Quer, Susanna
Pierce, Graham J.
Waggershauser, Cristian N.
Gilbert, Lucy
author Quer, Susanna
author_facet Quer, Susanna
Pierce, Graham J.
Waggershauser, Cristian N.
Gilbert, Lucy
author_role author
author2 Pierce, Graham J.
Waggershauser, Cristian N.
Gilbert, Lucy
author2_role author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Fish
Otoliths
Vertebrae
Seabird diet
Pellets
Diet methods
Great skua
Stercorarius skua
topic Fish
Otoliths
Vertebrae
Seabird diet
Pellets
Diet methods
Great skua
Stercorarius skua
description 10 pages, 4 figures, 3 figures.-- This article is licensed under a Creative Commons Attribution 4.0 International License
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/359774
url http://hdl.handle.net/10261/359774
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv The underlying dataset has been published as supplementary material of the article in the publishers platform at DOI https://doi.org/10.1007/s00227-024-04441-2
https://doi.org/10.1007/s00227-024-04441-2
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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