Acute bottlenecks to the survival of juvenile <i>Pygoscelis</i> penguins occur immediately after fledging

Autores
Hinke, Jefferson T.; Watters, George M.; Reiss, Christian S.; Santora, Jarrod A.; Santos, María Mercedes
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Estimating when and where survival bottlenecks occur in free-ranging marine predators is critical for effective demographic monitoring and spatial planning. This is particularly relevant to juvenile stages of long-lived species for which direct observations of death are typically not possible. We used satellite telemetry data from fledgling Adelie, chinstrap and gentoo penguins near the Antarctic Peninsula to estimate the spatio-temporal scale of a bottleneck after fledging. Fledglings were tracked up to 106 days over distances of up to 2140 km. Cumulative losses of tags increased to 73% within 16 days of deployment, followed by an order-of-magnitude reduction in loss rates thereafter. The timing and location of tag losses were consistent with at-sea observations of penguin carcasses and bioenergetics simulations of mass loss to thresholds associated with low recruitment probability. A bootstrapping procedure is used to assess tag loss owing to death versus other factors. Results suggest insensitivity in the timing of the bottleneck and quantify plausible ranges of mortality rates within the bottleneck. The weight of evidence indicates that a survival bottleneck for fledgling penguins is acute, attributable to predation and starvation, and may account for at least 33% of juvenile mortality.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
telemetry
Antarctica
recruitment
seabird
Pygoscelis
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:10915/142256

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network_name_str SEDICI (UNLP)
spelling Acute bottlenecks to the survival of juvenile <i>Pygoscelis</i> penguins occur immediately after fledgingHinke, Jefferson T.Watters, George M.Reiss, Christian S.Santora, Jarrod A.Santos, María MercedesCiencias NaturalestelemetryAntarcticarecruitmentseabirdPygoscelisEstimating when and where survival bottlenecks occur in free-ranging marine predators is critical for effective demographic monitoring and spatial planning. This is particularly relevant to juvenile stages of long-lived species for which direct observations of death are typically not possible. We used satellite telemetry data from fledgling Adelie, chinstrap and gentoo penguins near the Antarctic Peninsula to estimate the spatio-temporal scale of a bottleneck after fledging. Fledglings were tracked up to 106 days over distances of up to 2140 km. Cumulative losses of tags increased to 73% within 16 days of deployment, followed by an order-of-magnitude reduction in loss rates thereafter. The timing and location of tag losses were consistent with at-sea observations of penguin carcasses and bioenergetics simulations of mass loss to thresholds associated with low recruitment probability. A bootstrapping procedure is used to assess tag loss owing to death versus other factors. Results suggest insensitivity in the timing of the bottleneck and quantify plausible ranges of mortality rates within the bottleneck. The weight of evidence indicates that a survival bottleneck for fledgling penguins is acute, attributable to predation and starvation, and may account for at least 33% of juvenile mortality.Facultad de Ciencias Naturales y Museo2020-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/142256enginfo:eu-repo/semantics/altIdentifier/issn/1744-957Xinfo:eu-repo/semantics/altIdentifier/issn/1744-9561info:eu-repo/semantics/altIdentifier/doi/10.1098/rsbl.2020.0645info:eu-repo/semantics/altIdentifier/pmid/33321063info: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:UNLP2025-09-29T11:32:32Zoai:sedici.unlp.edu.ar:10915/142256Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:33.11SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Acute bottlenecks to the survival of juvenile <i>Pygoscelis</i> penguins occur immediately after fledging
title Acute bottlenecks to the survival of juvenile <i>Pygoscelis</i> penguins occur immediately after fledging
spellingShingle Acute bottlenecks to the survival of juvenile <i>Pygoscelis</i> penguins occur immediately after fledging
Hinke, Jefferson T.
Ciencias Naturales
telemetry
Antarctica
recruitment
seabird
Pygoscelis
title_short Acute bottlenecks to the survival of juvenile <i>Pygoscelis</i> penguins occur immediately after fledging
title_full Acute bottlenecks to the survival of juvenile <i>Pygoscelis</i> penguins occur immediately after fledging
title_fullStr Acute bottlenecks to the survival of juvenile <i>Pygoscelis</i> penguins occur immediately after fledging
title_full_unstemmed Acute bottlenecks to the survival of juvenile <i>Pygoscelis</i> penguins occur immediately after fledging
title_sort Acute bottlenecks to the survival of juvenile <i>Pygoscelis</i> penguins occur immediately after fledging
dc.creator.none.fl_str_mv Hinke, Jefferson T.
Watters, George M.
Reiss, Christian S.
Santora, Jarrod A.
Santos, María Mercedes
author Hinke, Jefferson T.
author_facet Hinke, Jefferson T.
Watters, George M.
Reiss, Christian S.
Santora, Jarrod A.
Santos, María Mercedes
author_role author
author2 Watters, George M.
Reiss, Christian S.
Santora, Jarrod A.
Santos, María Mercedes
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
telemetry
Antarctica
recruitment
seabird
Pygoscelis
topic Ciencias Naturales
telemetry
Antarctica
recruitment
seabird
Pygoscelis
dc.description.none.fl_txt_mv Estimating when and where survival bottlenecks occur in free-ranging marine predators is critical for effective demographic monitoring and spatial planning. This is particularly relevant to juvenile stages of long-lived species for which direct observations of death are typically not possible. We used satellite telemetry data from fledgling Adelie, chinstrap and gentoo penguins near the Antarctic Peninsula to estimate the spatio-temporal scale of a bottleneck after fledging. Fledglings were tracked up to 106 days over distances of up to 2140 km. Cumulative losses of tags increased to 73% within 16 days of deployment, followed by an order-of-magnitude reduction in loss rates thereafter. The timing and location of tag losses were consistent with at-sea observations of penguin carcasses and bioenergetics simulations of mass loss to thresholds associated with low recruitment probability. A bootstrapping procedure is used to assess tag loss owing to death versus other factors. Results suggest insensitivity in the timing of the bottleneck and quantify plausible ranges of mortality rates within the bottleneck. The weight of evidence indicates that a survival bottleneck for fledgling penguins is acute, attributable to predation and starvation, and may account for at least 33% of juvenile mortality.
Facultad de Ciencias Naturales y Museo
description Estimating when and where survival bottlenecks occur in free-ranging marine predators is critical for effective demographic monitoring and spatial planning. This is particularly relevant to juvenile stages of long-lived species for which direct observations of death are typically not possible. We used satellite telemetry data from fledgling Adelie, chinstrap and gentoo penguins near the Antarctic Peninsula to estimate the spatio-temporal scale of a bottleneck after fledging. Fledglings were tracked up to 106 days over distances of up to 2140 km. Cumulative losses of tags increased to 73% within 16 days of deployment, followed by an order-of-magnitude reduction in loss rates thereafter. The timing and location of tag losses were consistent with at-sea observations of penguin carcasses and bioenergetics simulations of mass loss to thresholds associated with low recruitment probability. A bootstrapping procedure is used to assess tag loss owing to death versus other factors. Results suggest insensitivity in the timing of the bottleneck and quantify plausible ranges of mortality rates within the bottleneck. The weight of evidence indicates that a survival bottleneck for fledgling penguins is acute, attributable to predation and starvation, and may account for at least 33% of juvenile mortality.
publishDate 2020
dc.date.none.fl_str_mv 2020-12
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/10915/142256
url http://sedici.unlp.edu.ar/handle/10915/142256
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1744-957X
info:eu-repo/semantics/altIdentifier/issn/1744-9561
info:eu-repo/semantics/altIdentifier/doi/10.1098/rsbl.2020.0645
info:eu-repo/semantics/altIdentifier/pmid/33321063
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
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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