Metapopulation dynamics and foraging plasticity in a highly vagile seabird, the southern rockhopper penguin
Population connectivity is driven by individual dispersal potential and modulated by natal philopatry. In seabirds, high vagility facilitates dispersal yet philopatry is also common, with foraging area overlap often correlated with population connectivity. We assess the interplay between these proce...
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ftconicet:oai:ri.conicet.gov.ar:11336/141131 2023-10-09T21:55:37+02:00 Metapopulation dynamics and foraging plasticity in a highly vagile seabird, the southern rockhopper penguin Lois, Nicolás Alejandro Campagna, Leonardo Balza, Ulises Polito, Michael J. Pütz, Klemens Vianna, Juliana A. Morgenthaler, Annick Frere, Esteban Saenz Samaniego, Ricardo Andres Raya Rey, Andrea Nélida Mahler, Bettina application/pdf http://hdl.handle.net/11336/141131 eng eng John Wiley & Sons Inc info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/ece3.6127 info:eu-repo/semantics/altIdentifier/doi/10.1002/ece3.6127 http://hdl.handle.net/11336/141131 Lois, Nicolás Alejandro; Campagna, Leonardo; Balza, Ulises; Polito, Michael J.; Pütz, Klemens; et al.; Metapopulation dynamics and foraging plasticity in a highly vagile seabird, the southern rockhopper penguin; John Wiley & Sons Inc; Ecology and Evolution; 10; 7; 3-2020; 3346-3355 2045-7758 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ DDRAD EUDYPTES CHRYSOCOME POPULATION DYNAMICS SIBER TROPHIC NICHE https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1002/ece3.6127 2023-09-24T18:46:17Z Population connectivity is driven by individual dispersal potential and modulated by natal philopatry. In seabirds, high vagility facilitates dispersal yet philopatry is also common, with foraging area overlap often correlated with population connectivity. We assess the interplay between these processes by studying past and current connectivity and foraging niche overlap among southern rockhopper penguin colonies of the coast of southern South America using genomic and stable isotope analyses. We found two distinct genetic clusters and detected low admixture between northern and southern colonies. Stable isotope analysis indicated niche variability between colonies, with Malvinas/Falklands colonies encompassing the species entire isotopic foraging niche, while the remaining colonies had smaller, nonoverlapping niches. A recently founded colony in continental Patagonia differed in isotopic niche width and position with Malvinas/Falklands colonies, its genetically identified founder population, suggesting the exploitation of novel foraging areas and/or prey items. Additionally, dispersing individuals found dead across the Patagonian shore in an unusual mortality event were also assigned to the northern cluster, suggesting northern individuals reach southern localities, but do not breed in these colonies. Facilitated by variability in foraging strategies, and especially during unfavorable conditions, the number of dispersing individuals may increase and enhance the probability of founding new colonies. Metapopulation demographic dynamics in seabirds should account for interannual variability in dispersal behavior and pay special attention to extreme climatic events, classically related to negative effects on population trends. Fil: Lois, Nicolás Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. ... Article in Journal/Newspaper Rockhopper penguin CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Patagonia Ecology and Evolution 10 7 3346 3355 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
DDRAD EUDYPTES CHRYSOCOME POPULATION DYNAMICS SIBER TROPHIC NICHE https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
DDRAD EUDYPTES CHRYSOCOME POPULATION DYNAMICS SIBER TROPHIC NICHE https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Lois, Nicolás Alejandro Campagna, Leonardo Balza, Ulises Polito, Michael J. Pütz, Klemens Vianna, Juliana A. Morgenthaler, Annick Frere, Esteban Saenz Samaniego, Ricardo Andres Raya Rey, Andrea Nélida Mahler, Bettina Metapopulation dynamics and foraging plasticity in a highly vagile seabird, the southern rockhopper penguin |
topic_facet |
DDRAD EUDYPTES CHRYSOCOME POPULATION DYNAMICS SIBER TROPHIC NICHE https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Population connectivity is driven by individual dispersal potential and modulated by natal philopatry. In seabirds, high vagility facilitates dispersal yet philopatry is also common, with foraging area overlap often correlated with population connectivity. We assess the interplay between these processes by studying past and current connectivity and foraging niche overlap among southern rockhopper penguin colonies of the coast of southern South America using genomic and stable isotope analyses. We found two distinct genetic clusters and detected low admixture between northern and southern colonies. Stable isotope analysis indicated niche variability between colonies, with Malvinas/Falklands colonies encompassing the species entire isotopic foraging niche, while the remaining colonies had smaller, nonoverlapping niches. A recently founded colony in continental Patagonia differed in isotopic niche width and position with Malvinas/Falklands colonies, its genetically identified founder population, suggesting the exploitation of novel foraging areas and/or prey items. Additionally, dispersing individuals found dead across the Patagonian shore in an unusual mortality event were also assigned to the northern cluster, suggesting northern individuals reach southern localities, but do not breed in these colonies. Facilitated by variability in foraging strategies, and especially during unfavorable conditions, the number of dispersing individuals may increase and enhance the probability of founding new colonies. Metapopulation demographic dynamics in seabirds should account for interannual variability in dispersal behavior and pay special attention to extreme climatic events, classically related to negative effects on population trends. Fil: Lois, Nicolás Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. ... |
format |
Article in Journal/Newspaper |
author |
Lois, Nicolás Alejandro Campagna, Leonardo Balza, Ulises Polito, Michael J. Pütz, Klemens Vianna, Juliana A. Morgenthaler, Annick Frere, Esteban Saenz Samaniego, Ricardo Andres Raya Rey, Andrea Nélida Mahler, Bettina |
author_facet |
Lois, Nicolás Alejandro Campagna, Leonardo Balza, Ulises Polito, Michael J. Pütz, Klemens Vianna, Juliana A. Morgenthaler, Annick Frere, Esteban Saenz Samaniego, Ricardo Andres Raya Rey, Andrea Nélida Mahler, Bettina |
author_sort |
Lois, Nicolás Alejandro |
title |
Metapopulation dynamics and foraging plasticity in a highly vagile seabird, the southern rockhopper penguin |
title_short |
Metapopulation dynamics and foraging plasticity in a highly vagile seabird, the southern rockhopper penguin |
title_full |
Metapopulation dynamics and foraging plasticity in a highly vagile seabird, the southern rockhopper penguin |
title_fullStr |
Metapopulation dynamics and foraging plasticity in a highly vagile seabird, the southern rockhopper penguin |
title_full_unstemmed |
Metapopulation dynamics and foraging plasticity in a highly vagile seabird, the southern rockhopper penguin |
title_sort |
metapopulation dynamics and foraging plasticity in a highly vagile seabird, the southern rockhopper penguin |
publisher |
John Wiley & Sons Inc |
url |
http://hdl.handle.net/11336/141131 |
geographic |
Patagonia |
geographic_facet |
Patagonia |
genre |
Rockhopper penguin |
genre_facet |
Rockhopper penguin |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/ece3.6127 info:eu-repo/semantics/altIdentifier/doi/10.1002/ece3.6127 http://hdl.handle.net/11336/141131 Lois, Nicolás Alejandro; Campagna, Leonardo; Balza, Ulises; Polito, Michael J.; Pütz, Klemens; et al.; Metapopulation dynamics and foraging plasticity in a highly vagile seabird, the southern rockhopper penguin; John Wiley & Sons Inc; Ecology and Evolution; 10; 7; 3-2020; 3346-3355 2045-7758 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
op_doi |
https://doi.org/10.1002/ece3.6127 |
container_title |
Ecology and Evolution |
container_volume |
10 |
container_issue |
7 |
container_start_page |
3346 |
op_container_end_page |
3355 |
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1779319600688660480 |