Stable isotopes reveal winter feeding in different habitats in blue, fin and sei whales migrating through the Azores

Knowing the migratory movements and behaviour of baleen whales is fundamental to understanding their ecology. We compared δ15N and δ13C values in the skin of blue (Balaenoptera musculus), fin (Balaenoptera physalus) and sei (Balaenoptera borealis) whales sighted in the Azores in spring with the valu...

ver descrição completa

Detalhes bibliográficos
Autores: Silva, Mónica A., Borrell Thió, Assumpció, Prieto, Rui, Gauffier, Pauline, Bérubé, Martine, Palsbøll, Per J., Colaço, Ana
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/141162
Acesso em linha:https://hdl.handle.net/2445/141162
Access Level:acceso abierto
Palavra-chave:Balenes
Açores
Migració d'animals
Whales
Azores
Animal migration
id ES_4e2fecff8fdfdd6a0bfbaa5f1de052e4
oai_identifier_str oai:recercat.cat:2445/141162
network_acronym_str ES
network_name_str España
repository_id_str
spelling Stable isotopes reveal winter feeding in different habitats in blue, fin and sei whales migrating through the AzoresSilva, Mónica A.Borrell Thió, AssumpcióPrieto, RuiGauffier, PaulineBérubé, MartinePalsbøll, Per J.Colaço, AnaBalenesAçoresMigració d'animalsWhalesAzoresAnimal migrationKnowing the migratory movements and behaviour of baleen whales is fundamental to understanding their ecology. We compared δ15N and δ13C values in the skin of blue (Balaenoptera musculus), fin (Balaenoptera physalus) and sei (Balaenoptera borealis) whales sighted in the Azores in spring with the values of potential prey from different regions within the North Atlantic using Bayesian mixing models to investigate their trophic ecology and migration patterns. Fin whale δ15N values were higher than those recorded in blue and sei whales, reflecting feeding at higher trophic levels. Whales' skin δ15N and δ13C values did not reflect prey from high-latitude summer foraging grounds; instead mixing models identified tropical or subtropical regions as the most likely feeding areas for all species during winter and spring. Yet, differences in δ13C values among whale species suggest use of different regions within this range. Blue and sei whales primarily used resources from the Northwest African upwelling and pelagic tropical/subtropical regions, while fin whales fed off Iberia. However, determining feeding habitats from stable isotope values remains difficult. In conclusion, winter feeding appears common among North Atlantic blue, fin and sei whales, and may play a crucial role in determining their winter distribution. A better understanding of winter feeding behaviour is therefore fundamental for the effective conservation of these species.The Royal Society2019201920192019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion18 p.application/pdfapplication/pdfhttps://hdl.handle.net/2445/141162Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1098/rsos.181800Royal Society Open Science, 2019, vol. 6, num. 8https://doi.org/10.1098/rsos.181800cc-by (c) Silva, Mónica A. et al., 2019http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1411622026-05-29T05:05:01Z
dc.title.none.fl_str_mv Stable isotopes reveal winter feeding in different habitats in blue, fin and sei whales migrating through the Azores
title Stable isotopes reveal winter feeding in different habitats in blue, fin and sei whales migrating through the Azores
spellingShingle Stable isotopes reveal winter feeding in different habitats in blue, fin and sei whales migrating through the Azores
Silva, Mónica A.
Balenes
Açores
Migració d'animals
Whales
Azores
Animal migration
title_short Stable isotopes reveal winter feeding in different habitats in blue, fin and sei whales migrating through the Azores
title_full Stable isotopes reveal winter feeding in different habitats in blue, fin and sei whales migrating through the Azores
title_fullStr Stable isotopes reveal winter feeding in different habitats in blue, fin and sei whales migrating through the Azores
title_full_unstemmed Stable isotopes reveal winter feeding in different habitats in blue, fin and sei whales migrating through the Azores
title_sort Stable isotopes reveal winter feeding in different habitats in blue, fin and sei whales migrating through the Azores
dc.creator.none.fl_str_mv Silva, Mónica A.
Borrell Thió, Assumpció
Prieto, Rui
Gauffier, Pauline
Bérubé, Martine
Palsbøll, Per J.
Colaço, Ana
author Silva, Mónica A.
author_facet Silva, Mónica A.
Borrell Thió, Assumpció
Prieto, Rui
Gauffier, Pauline
Bérubé, Martine
Palsbøll, Per J.
Colaço, Ana
author_role author
author2 Borrell Thió, Assumpció
Prieto, Rui
Gauffier, Pauline
Bérubé, Martine
Palsbøll, Per J.
Colaço, Ana
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Balenes
Açores
Migració d'animals
Whales
Azores
Animal migration
topic Balenes
Açores
Migració d'animals
Whales
Azores
Animal migration
description Knowing the migratory movements and behaviour of baleen whales is fundamental to understanding their ecology. We compared δ15N and δ13C values in the skin of blue (Balaenoptera musculus), fin (Balaenoptera physalus) and sei (Balaenoptera borealis) whales sighted in the Azores in spring with the values of potential prey from different regions within the North Atlantic using Bayesian mixing models to investigate their trophic ecology and migration patterns. Fin whale δ15N values were higher than those recorded in blue and sei whales, reflecting feeding at higher trophic levels. Whales' skin δ15N and δ13C values did not reflect prey from high-latitude summer foraging grounds; instead mixing models identified tropical or subtropical regions as the most likely feeding areas for all species during winter and spring. Yet, differences in δ13C values among whale species suggest use of different regions within this range. Blue and sei whales primarily used resources from the Northwest African upwelling and pelagic tropical/subtropical regions, while fin whales fed off Iberia. However, determining feeding habitats from stable isotope values remains difficult. In conclusion, winter feeding appears common among North Atlantic blue, fin and sei whales, and may play a crucial role in determining their winter distribution. A better understanding of winter feeding behaviour is therefore fundamental for the effective conservation of these species.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/141162
url https://hdl.handle.net/2445/141162
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1098/rsos.181800
Royal Society Open Science, 2019, vol. 6, num. 8
https://doi.org/10.1098/rsos.181800
dc.rights.none.fl_str_mv cc-by (c) Silva, Mónica A. et al., 2019
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Silva, Mónica A. et al., 2019
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 18 p.
application/pdf
application/pdf
dc.publisher.none.fl_str_mv The Royal Society
publisher.none.fl_str_mv The Royal Society
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869407740119482368
score 15.811543

Registos relacionados