Diet of Adélie penguins (<i>Pygoscelis adeliae</i>) at Stranger Point (25 de Mayo/King George Island, Antarctica) over a 13-year period (2003–2015)
- Autores
- Juáres, Mariana Alejandra; Casaux, Ricardo Jorge; Corbalán, Aldo; Blanco, Gabriel; Pereira, G. Ariel; Perchivale, Pablo José; Coria, Néstor Rubén; Santos, María Mercedes
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Knowledge of the feeding ecology of a species at local level is fundamental to determine the relationship between the fluctuations in local marine resources and population dynamics of predators. In this study, we examined the diet of Adélie penguins (Pygoscelis adeliae) during the crèche stage at the Stranger Point colony, South Shetland Islands, Antarctica, over a 13-year period (2002/2003–2014/2015). Antarctic krill (Euphausia superba) was the dominant prey for Adélie penguins during the crèche period (contribution: 100% of occurrence and >99.7% by mass). The fish component in the diet represented a small proportion of the total prey (contribution: from 4 to 24% of occurrence but <0.15% by mass). A marked inter-annual variability in the mass of stomach contents, the krill size consumed and the proportion of juvenile krill was observed. Moreover, a possible recruitment event of krill was recorded. A negative relationship between the size of krill in the diet and breeding success was found, suggesting that population dynamics of krill also reflected changes in the local availability of this crustacean. This work is the first long-term study of dietary parameters of Adélie penguins for the Stranger Point colony.
Facultad de Ciencias Naturales y Museo - Materia
-
Ciencias Naturales
Pygoscelis adeliae
Krill-dependent species
Prey availability
South Shetland Islands - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/133294
Ver los metadatos del registro completo
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Diet of Adélie penguins (<i>Pygoscelis adeliae</i>) at Stranger Point (25 de Mayo/King George Island, Antarctica) over a 13-year period (2003–2015)Juáres, Mariana AlejandraCasaux, Ricardo JorgeCorbalán, AldoBlanco, GabrielPereira, G. ArielPerchivale, Pablo JoséCoria, Néstor RubénSantos, María MercedesCiencias NaturalesPygoscelis adeliaeKrill-dependent speciesPrey availabilitySouth Shetland IslandsKnowledge of the feeding ecology of a species at local level is fundamental to determine the relationship between the fluctuations in local marine resources and population dynamics of predators. In this study, we examined the diet of Adélie penguins (<i>Pygoscelis adeliae</i>) during the crèche stage at the Stranger Point colony, South Shetland Islands, Antarctica, over a 13-year period (2002/2003–2014/2015). Antarctic krill (<i>Euphausia superba</i>) was the dominant prey for Adélie penguins during the crèche period (contribution: 100% of occurrence and >99.7% by mass). The fish component in the diet represented a small proportion of the total prey (contribution: from 4 to 24% of occurrence but <0.15% by mass). A marked inter-annual variability in the mass of stomach contents, the krill size consumed and the proportion of juvenile krill was observed. Moreover, a possible recruitment event of krill was recorded. A negative relationship between the size of krill in the diet and breeding success was found, suggesting that population dynamics of krill also reflected changes in the local availability of this crustacean. This work is the first long-term study of dietary parameters of Adélie penguins for the Stranger Point colony.Facultad de Ciencias Naturales y Museo2018-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf303-311http://sedici.unlp.edu.ar/handle/10915/133294enginfo:eu-repo/semantics/altIdentifier/issn/0722-4060info:eu-repo/semantics/altIdentifier/issn/1432-2056info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-017-2191-3info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:52Zoai:sedici.unlp.edu.ar:10915/133294Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:52.523SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Diet of Adélie penguins (<i>Pygoscelis adeliae</i>) at Stranger Point (25 de Mayo/King George Island, Antarctica) over a 13-year period (2003–2015) |
title |
Diet of Adélie penguins (<i>Pygoscelis adeliae</i>) at Stranger Point (25 de Mayo/King George Island, Antarctica) over a 13-year period (2003–2015) |
spellingShingle |
Diet of Adélie penguins (<i>Pygoscelis adeliae</i>) at Stranger Point (25 de Mayo/King George Island, Antarctica) over a 13-year period (2003–2015) Juáres, Mariana Alejandra Ciencias Naturales Pygoscelis adeliae Krill-dependent species Prey availability South Shetland Islands |
title_short |
Diet of Adélie penguins (<i>Pygoscelis adeliae</i>) at Stranger Point (25 de Mayo/King George Island, Antarctica) over a 13-year period (2003–2015) |
title_full |
Diet of Adélie penguins (<i>Pygoscelis adeliae</i>) at Stranger Point (25 de Mayo/King George Island, Antarctica) over a 13-year period (2003–2015) |
title_fullStr |
Diet of Adélie penguins (<i>Pygoscelis adeliae</i>) at Stranger Point (25 de Mayo/King George Island, Antarctica) over a 13-year period (2003–2015) |
title_full_unstemmed |
Diet of Adélie penguins (<i>Pygoscelis adeliae</i>) at Stranger Point (25 de Mayo/King George Island, Antarctica) over a 13-year period (2003–2015) |
title_sort |
Diet of Adélie penguins (<i>Pygoscelis adeliae</i>) at Stranger Point (25 de Mayo/King George Island, Antarctica) over a 13-year period (2003–2015) |
dc.creator.none.fl_str_mv |
Juáres, Mariana Alejandra Casaux, Ricardo Jorge Corbalán, Aldo Blanco, Gabriel Pereira, G. Ariel Perchivale, Pablo José Coria, Néstor Rubén Santos, María Mercedes |
author |
Juáres, Mariana Alejandra |
author_facet |
Juáres, Mariana Alejandra Casaux, Ricardo Jorge Corbalán, Aldo Blanco, Gabriel Pereira, G. Ariel Perchivale, Pablo José Coria, Néstor Rubén Santos, María Mercedes |
author_role |
author |
author2 |
Casaux, Ricardo Jorge Corbalán, Aldo Blanco, Gabriel Pereira, G. Ariel Perchivale, Pablo José Coria, Néstor Rubén Santos, María Mercedes |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
Ciencias Naturales Pygoscelis adeliae Krill-dependent species Prey availability South Shetland Islands |
topic |
Ciencias Naturales Pygoscelis adeliae Krill-dependent species Prey availability South Shetland Islands |
dc.description.none.fl_txt_mv |
Knowledge of the feeding ecology of a species at local level is fundamental to determine the relationship between the fluctuations in local marine resources and population dynamics of predators. In this study, we examined the diet of Adélie penguins (<i>Pygoscelis adeliae</i>) during the crèche stage at the Stranger Point colony, South Shetland Islands, Antarctica, over a 13-year period (2002/2003–2014/2015). Antarctic krill (<i>Euphausia superba</i>) was the dominant prey for Adélie penguins during the crèche period (contribution: 100% of occurrence and >99.7% by mass). The fish component in the diet represented a small proportion of the total prey (contribution: from 4 to 24% of occurrence but <0.15% by mass). A marked inter-annual variability in the mass of stomach contents, the krill size consumed and the proportion of juvenile krill was observed. Moreover, a possible recruitment event of krill was recorded. A negative relationship between the size of krill in the diet and breeding success was found, suggesting that population dynamics of krill also reflected changes in the local availability of this crustacean. This work is the first long-term study of dietary parameters of Adélie penguins for the Stranger Point colony. Facultad de Ciencias Naturales y Museo |
description |
Knowledge of the feeding ecology of a species at local level is fundamental to determine the relationship between the fluctuations in local marine resources and population dynamics of predators. In this study, we examined the diet of Adélie penguins (<i>Pygoscelis adeliae</i>) during the crèche stage at the Stranger Point colony, South Shetland Islands, Antarctica, over a 13-year period (2002/2003–2014/2015). Antarctic krill (<i>Euphausia superba</i>) was the dominant prey for Adélie penguins during the crèche period (contribution: 100% of occurrence and >99.7% by mass). The fish component in the diet represented a small proportion of the total prey (contribution: from 4 to 24% of occurrence but <0.15% by mass). A marked inter-annual variability in the mass of stomach contents, the krill size consumed and the proportion of juvenile krill was observed. Moreover, a possible recruitment event of krill was recorded. A negative relationship between the size of krill in the diet and breeding success was found, suggesting that population dynamics of krill also reflected changes in the local availability of this crustacean. This work is the first long-term study of dietary parameters of Adélie penguins for the Stranger Point colony. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-02 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/133294 |
url |
http://sedici.unlp.edu.ar/handle/10915/133294 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0722-4060 info:eu-repo/semantics/altIdentifier/issn/1432-2056 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-017-2191-3 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
dc.format.none.fl_str_mv |
application/pdf 303-311 |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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