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dc.contributor.author
Dantas, Gisele Pires Mendonça
dc.contributor.author
Maria, Gabriella Cardoso
dc.contributor.author
Marasco, Anna Carolina Milo
dc.contributor.author
Castro, Larissa Tormena
dc.contributor.author
Almeida, Vanessa Simão
dc.contributor.author
Santos, Fabricio Rodrigues
dc.contributor.author
Rosa de Oliveira, Larissa
dc.contributor.author
Crespo, Enrique Alberto
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Frere, Esteban
dc.contributor.author
Milliones, Anna
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González Acuña, Daniel
dc.contributor.author
Morgante, João Stenghel
dc.contributor.author
Vianna, Juliana A.
dc.date.available
2019-11-11T19:22:30Z
dc.date.issued
2018-07
dc.identifier.citation
Dantas, Gisele Pires Mendonça; Maria, Gabriella Cardoso; Marasco, Anna Carolina Milo; Castro, Larissa Tormena; Almeida, Vanessa Simão; et al.; Demographic history of the Magellanic Penguin (Spheniscus magellanicus) on the Pacific and Atlantic coasts of South America; Springer; Journal of Ornithology; 159; 3; 7-2018; 643-655
dc.identifier.issn
2193-7192
dc.identifier.uri
http://hdl.handle.net/11336/88532
dc.description.abstract
Spatial subdivision, local extinction and recolonization influence the genetic variation of natural populations. Different levels of population structure can be identified in nature, from panmictic populations, in which high gene flow homogenizes diversity across localities, to metapopulations, where combinations of moderate to high levels of population differentiation and source-sink population dynamics are expected. Gene flow, dispersal and recolonization can be affected by changes in ecological conditions such as climate and resource distribution. Evaluating demographic history is crucial for understanding current population dynamics. We assessed a mitchondrial DNA (mtDNA) control region and microsatellite data for 210 Magellanic Penguins (Spheniscus magellanicus) from 13 breeding colonies on the coastlines of Chile and Argentina, covering a great portion of the species’ distribution. We found high levels of genetic diversity and detected two genetic-geographic regions, Pacific and Atlantic, probably due to interruption of the connection between the oceans during the Last Glacial Maximum (LGM), when several parts of the Magellanic Channel were connected to the continent. The Atlantic ocean colonies showed a slight differentiation between the northern and southern colonies, and the Falkand/Malvinas one seems to be a mix of northern, southern and Pacific colonies. Magellanic Penguins showed intense gene flown among colonies, and exhibited low levels of genetic differentiation in each region. Furthermore, our findings indicate that the Magellanic Penguin experienced a population expansion around 17,500 years ago, which is in agreement with the timing of a decreased sea level and the exposure of the continental shelf along the coast of Argentina and the Falkland/Malvinas Islands at the end of the LGM. Thus, our results suggest that climate changes that affect the sea level in South America can play important roles in the migration of Magellanic Penguins.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
DIVERSITY
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GENE FLOW
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GENETIC VARIATION
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MICROSATELLITES
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MITOCHONDRIAL DNA
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SEABIRDS
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Ecología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Demographic history of the Magellanic Penguin (Spheniscus magellanicus) on the Pacific and Atlantic coasts of South America
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-22T15:54:53Z
dc.identifier.eissn
2193-7206
dc.journal.volume
159
dc.journal.number
3
dc.journal.pagination
643-655
dc.journal.pais
Alemania
dc.description.fil
Fil: Dantas, Gisele Pires Mendonça. Pontificia Universidade Catolica de Minas Gerais; . Universidade Federal de Minas Gerais; Brasil
dc.description.fil
Fil: Maria, Gabriella Cardoso. Universidade de Sao Paulo; Brasil
dc.description.fil
Fil: Marasco, Anna Carolina Milo. Universidade de Sao Paulo; Brasil
dc.description.fil
Fil: Castro, Larissa Tormena. Universidade de Sao Paulo; Brasil
dc.description.fil
Fil: Almeida, Vanessa Simão. Universidade de Sao Paulo; Brasil
dc.description.fil
Fil: Santos, Fabricio Rodrigues. Universidade Federal de Minas Gerais; Brasil
dc.description.fil
Fil: Rosa de Oliveira, Larissa. Universidade Do Vale Do Rio Dos Sinos; Brasil
dc.description.fil
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: Frere, Esteban. Universidad Nacional de la Patagonia Austral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
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Fil: Milliones, Anna. Universidad Nacional de la Patagonia Austral; Argentina
dc.description.fil
Fil: González Acuña, Daniel. Universidad de Concepción; Chile
dc.description.fil
Fil: Morgante, João Stenghel. Universidade de Sao Paulo; Brasil
dc.description.fil
Fil: Vianna, Juliana A.. Pontificia Universidad Católica de Chile; Chile. Universidad Católica de Chile; Chile
dc.journal.title
Journal of Ornithology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10336-018-1538-z
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10336-018-1538-z
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