Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica

Autores
Juáres, Mariana Alejandra; Santos, María Mercedes; Negrete, Javier; Santos, María Rita; Mennucci, Jorge Augusto; Rombolá, Emilce; Longarzo, Lucrecia; Coria, Néstor Rubén; Carlini, Alejandro Ricardo
Año de publicación
2013
Idioma
inglés
Tipo de recurso
reseña artículo
Estado
versión publicada
Descripción
Rapid climate change recorded in the western Antarctic Peninsula confronts species with less predictable conditions in the marine and terrestrial environments. We analysed the breeding chronology and nesting site selection of gentoo penguins (Pygoscelis papua) at King George Island (Isla 25 de Mayo), Antarctica, during four seasons in which differences in snow presence and persistence on the ground were observed. We recorded an overall delay as well as seasonal asynchrony at the beginning of reproduction for those years with higher snow deposition. A redistribution of breeding groups was also observed. Nevertheless, the population breeding success and chicks' weight at fledging remained relatively constant, despite the delay in breeding chronology, the increased duration of foraging trips during the guard stage and the decreased weight of stomach contents during the cre'che stage. We suggest that the plasticity of their trophic biology, along with the flexibility of their breeding phenology and relocation of breeding groups, may be complementary reasons why gentoo penguin populations in the region have remained stable in spite of the changing conditions currently registered.
Facultad de Ciencias Naturales y Museo
Instituto Multidisciplinario de Biología Celular
Materia
Ciencias Naturales
Antarctica
Breeding delay
Breeding phenology
Euphausia superba
Pygoscelis papua
Snow
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc/3.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/84998
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/84998
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, AntarcticaJuáres, Mariana AlejandraSantos, María MercedesNegrete, JavierSantos, María RitaMennucci, Jorge AugustoRombolá, EmilceLongarzo, LucreciaCoria, Néstor RubénCarlini, Alejandro RicardoCiencias NaturalesAntarcticaBreeding delayBreeding phenologyEuphausia superbaPygoscelis papuaSnowRapid climate change recorded in the western Antarctic Peninsula confronts species with less predictable conditions in the marine and terrestrial environments. We analysed the breeding chronology and nesting site selection of gentoo penguins (<i>Pygoscelis papua</i>) at King George Island (Isla 25 de Mayo), Antarctica, during four seasons in which differences in snow presence and persistence on the ground were observed. We recorded an overall delay as well as seasonal asynchrony at the beginning of reproduction for those years with higher snow deposition. A redistribution of breeding groups was also observed. Nevertheless, the population breeding success and chicks' weight at fledging remained relatively constant, despite the delay in breeding chronology, the increased duration of foraging trips during the guard stage and the decreased weight of stomach contents during the cre'che stage. We suggest that the plasticity of their trophic biology, along with the flexibility of their breeding phenology and relocation of breeding groups, may be complementary reasons why gentoo penguin populations in the region have remained stable in spite of the changing conditions currently registered.Facultad de Ciencias Naturales y MuseoInstituto Multidisciplinario de Biología Celular2013info:eu-repo/semantics/reviewinfo:eu-repo/semantics/publishedVersionRevisionhttp://purl.org/coar/resource_type/c_dcae04bcinfo:ar-repo/semantics/resenaArticuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/84998enginfo:eu-repo/semantics/altIdentifier/issn/0800-0395info:eu-repo/semantics/altIdentifier/doi/10.3402/polar.v32i0.18448info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc/3.0/Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T16:57:22Zoai:sedici.unlp.edu.ar:10915/84998Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:57:22.95SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica
title Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica
spellingShingle Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica
Juáres, Mariana Alejandra
Ciencias Naturales
Antarctica
Breeding delay
Breeding phenology
Euphausia superba
Pygoscelis papua
Snow
title_short Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica
title_full Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica
title_fullStr Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica
title_full_unstemmed Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica
title_sort Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica
dc.creator.none.fl_str_mv Juáres, Mariana Alejandra
Santos, María Mercedes
Negrete, Javier
Santos, María Rita
Mennucci, Jorge Augusto
Rombolá, Emilce
Longarzo, Lucrecia
Coria, Néstor Rubén
Carlini, Alejandro Ricardo
author Juáres, Mariana Alejandra
author_facet Juáres, Mariana Alejandra
Santos, María Mercedes
Negrete, Javier
Santos, María Rita
Mennucci, Jorge Augusto
Rombolá, Emilce
Longarzo, Lucrecia
Coria, Néstor Rubén
Carlini, Alejandro Ricardo
author_role author
author2 Santos, María Mercedes
Negrete, Javier
Santos, María Rita
Mennucci, Jorge Augusto
Rombolá, Emilce
Longarzo, Lucrecia
Coria, Néstor Rubén
Carlini, Alejandro Ricardo
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Antarctica
Breeding delay
Breeding phenology
Euphausia superba
Pygoscelis papua
Snow
topic Ciencias Naturales
Antarctica
Breeding delay
Breeding phenology
Euphausia superba
Pygoscelis papua
Snow
dc.description.none.fl_txt_mv Rapid climate change recorded in the western Antarctic Peninsula confronts species with less predictable conditions in the marine and terrestrial environments. We analysed the breeding chronology and nesting site selection of gentoo penguins (<i>Pygoscelis papua</i>) at King George Island (Isla 25 de Mayo), Antarctica, during four seasons in which differences in snow presence and persistence on the ground were observed. We recorded an overall delay as well as seasonal asynchrony at the beginning of reproduction for those years with higher snow deposition. A redistribution of breeding groups was also observed. Nevertheless, the population breeding success and chicks' weight at fledging remained relatively constant, despite the delay in breeding chronology, the increased duration of foraging trips during the guard stage and the decreased weight of stomach contents during the cre'che stage. We suggest that the plasticity of their trophic biology, along with the flexibility of their breeding phenology and relocation of breeding groups, may be complementary reasons why gentoo penguin populations in the region have remained stable in spite of the changing conditions currently registered.
Facultad de Ciencias Naturales y Museo
Instituto Multidisciplinario de Biología Celular
description Rapid climate change recorded in the western Antarctic Peninsula confronts species with less predictable conditions in the marine and terrestrial environments. We analysed the breeding chronology and nesting site selection of gentoo penguins (<i>Pygoscelis papua</i>) at King George Island (Isla 25 de Mayo), Antarctica, during four seasons in which differences in snow presence and persistence on the ground were observed. We recorded an overall delay as well as seasonal asynchrony at the beginning of reproduction for those years with higher snow deposition. A redistribution of breeding groups was also observed. Nevertheless, the population breeding success and chicks' weight at fledging remained relatively constant, despite the delay in breeding chronology, the increased duration of foraging trips during the guard stage and the decreased weight of stomach contents during the cre'che stage. We suggest that the plasticity of their trophic biology, along with the flexibility of their breeding phenology and relocation of breeding groups, may be complementary reasons why gentoo penguin populations in the region have remained stable in spite of the changing conditions currently registered.
publishDate 2013
dc.date.none.fl_str_mv 2013
dc.type.none.fl_str_mv info:eu-repo/semantics/review
info:eu-repo/semantics/publishedVersion
Revision
http://purl.org/coar/resource_type/c_dcae04bc
info:ar-repo/semantics/resenaArticulo
format review
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/84998
url http://sedici.unlp.edu.ar/handle/10915/84998
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0800-0395
info:eu-repo/semantics/altIdentifier/doi/10.3402/polar.v32i0.18448
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc/3.0/
Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc/3.0/
Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
dc.format.none.fl_str_mv application/pdf
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
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