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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/142256
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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 |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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