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
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/133294

id SEDICI_7db2e653987c4d2f465564da862094c1
oai_identifier_str oai:sedici.unlp.edu.ar:10915/133294
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling 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
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1844616198358040576
score 13.070432