From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands
- Autores
- Kraft, Sebastián; Pérez-Alvarez, M. José; Olavarría, Carlos; Moraga, Rodrigo; Baker, C. Scott; Steel, Debbie; Tixier, Paul; Guinet, Christophe; Viricel, Amelia; Brickle, Paul; Costa, Marina; Crespo, Enrique Alberto; Durante, Cristian Alberto; Loizaga de Castro, Rocio; Poulin, Elie
- Año de publicación
- 2021
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Commerson’s dolphins (Cephalorhynchus commersonii) are separated into the subspecies C. c. commersonii, found along southern South America (SA) and the Falkland Islands/Islas Malvinas (FI/IM), and C. c. kerguelenensis, restricted to the subantarctic Kerguelen Islands (KI). Following the dispersal model proposed for the genus, the latter is thought to have originated from SA after a long-distance dispersal event. To evaluate this biogeographic scenario, a distribution-wide, balanced sampling of mitochondrial DNA (mtDNA) control region sequences was designed. New tissue samples from southern Chile, Argentina, FI/IM, and KI were added to published sequences from SA and KI, for a total of 256 samples. Genetic diversity indices, genetic and phylogeographic structure, and migration rates were calculated. One haplotype was shared between subspecies, with which all haplotypes of C. c. kerguelenensis formed a distinct group in the haplotype network. A new haplotype for C. c. kerguelenensis is reported. Differentiation in haplotype frequencies was found among localities within the distribution of C. c. commersonii, yet the phylogeographic signal was only statistically significant between subspecies. Coalescent-based historical gene flow estimations indicated migration between the northern and southern portions of the species’ range in SA as well as between SA and the FI/IM, but not between these and the KI. The net nucleotide divergence between dolphins from SA and the FI/IM was lower than the recommended threshold value suggested for delimiting subspecies, unlike that found between C. c. commersonii and C. c. kerguelenensis. The results are consistent with the model of post-glacial colonization of KI by South American C. commersonii, followed by an ongoing divergence process and subspecies status. Thus, C. c. kerguelenensis may represent the most recent diversification step of Cephalorhynchus, where isolation from their source population is driving a process of incipient speciation.
Fil: Kraft, Sebastián. Universidad de Santiago de Chile. Facultad de Ciencias; Chile
Fil: Pérez-Alvarez, M. José. Universidad de Santiago de Chile. Facultad de Ciencias; Chile. Universidad Mayor; Chile. Centro de Investigación Eutropia; Chile. Instituto milenio Biodiversidad de los Ecosistemas Antárticos y Subantárticos (BASE); Chile
Fil: Olavarría, Carlos. Centro de Investigación Eutropia; Chile. Centro de Estudios Avanzados en Zonas Áridas (CEAZA); Chile
Fil: Moraga, Rodrigo. Centro de Investigación Eutropia; Chile
Fil: Baker, C. Scott. Oregon State University; Estados Unidos
Fil: Steel, Debbie. Oregon State University; Estados Unidos
Fil: Tixier, Paul. Université de Montpellier; Francia. Centre d’Etudes Biologiques de Chizé; Francia
Fil: Guinet, Christophe. Centre d’Etudes Biologiques de Chizé; Francia
Fil: Viricel, Amelia. Université de la Rochelle; Francia
Fil: Brickle, Paul. South Atlantic Environmental Research Institute; Islas Georgias del Sur y Sandwich del Sur
Fil: Costa, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Fil: Durante, Cristian Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Fil: Loizaga de Castro, Rocio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Fil: Poulin, Elie. Universidad de Chile; Chile. Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE); Chile - Materia
-
CEPHALORHYNCHUS COMMERSONII
COLONIZATION
DIVERGENCE
LAST GLACIAL MAXIMUM
MITOCHONDRIAL DNA
PHYLOGEOGRAPHY - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/159520
Ver los metadatos del registro completo
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CONICET Digital (CONICET) |
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From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen IslandsKraft, SebastiánPérez-Alvarez, M. JoséOlavarría, CarlosMoraga, RodrigoBaker, C. ScottSteel, DebbieTixier, PaulGuinet, ChristopheViricel, AmeliaBrickle, PaulCosta, MarinaCrespo, Enrique AlbertoDurante, Cristian AlbertoLoizaga de Castro, RocioPoulin, ElieCEPHALORHYNCHUS COMMERSONIICOLONIZATIONDIVERGENCELAST GLACIAL MAXIMUMMITOCHONDRIAL DNAPHYLOGEOGRAPHYhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Commerson’s dolphins (Cephalorhynchus commersonii) are separated into the subspecies C. c. commersonii, found along southern South America (SA) and the Falkland Islands/Islas Malvinas (FI/IM), and C. c. kerguelenensis, restricted to the subantarctic Kerguelen Islands (KI). Following the dispersal model proposed for the genus, the latter is thought to have originated from SA after a long-distance dispersal event. To evaluate this biogeographic scenario, a distribution-wide, balanced sampling of mitochondrial DNA (mtDNA) control region sequences was designed. New tissue samples from southern Chile, Argentina, FI/IM, and KI were added to published sequences from SA and KI, for a total of 256 samples. Genetic diversity indices, genetic and phylogeographic structure, and migration rates were calculated. One haplotype was shared between subspecies, with which all haplotypes of C. c. kerguelenensis formed a distinct group in the haplotype network. A new haplotype for C. c. kerguelenensis is reported. Differentiation in haplotype frequencies was found among localities within the distribution of C. c. commersonii, yet the phylogeographic signal was only statistically significant between subspecies. Coalescent-based historical gene flow estimations indicated migration between the northern and southern portions of the species’ range in SA as well as between SA and the FI/IM, but not between these and the KI. The net nucleotide divergence between dolphins from SA and the FI/IM was lower than the recommended threshold value suggested for delimiting subspecies, unlike that found between C. c. commersonii and C. c. kerguelenensis. The results are consistent with the model of post-glacial colonization of KI by South American C. commersonii, followed by an ongoing divergence process and subspecies status. Thus, C. c. kerguelenensis may represent the most recent diversification step of Cephalorhynchus, where isolation from their source population is driving a process of incipient speciation.Fil: Kraft, Sebastián. Universidad de Santiago de Chile. Facultad de Ciencias; ChileFil: Pérez-Alvarez, M. José. Universidad de Santiago de Chile. Facultad de Ciencias; Chile. Universidad Mayor; Chile. Centro de Investigación Eutropia; Chile. Instituto milenio Biodiversidad de los Ecosistemas Antárticos y Subantárticos (BASE); ChileFil: Olavarría, Carlos. Centro de Investigación Eutropia; Chile. Centro de Estudios Avanzados en Zonas Áridas (CEAZA); ChileFil: Moraga, Rodrigo. Centro de Investigación Eutropia; ChileFil: Baker, C. Scott. Oregon State University; Estados UnidosFil: Steel, Debbie. Oregon State University; Estados UnidosFil: Tixier, Paul. Université de Montpellier; Francia. Centre d’Etudes Biologiques de Chizé; FranciaFil: Guinet, Christophe. Centre d’Etudes Biologiques de Chizé; FranciaFil: Viricel, Amelia. Université de la Rochelle; FranciaFil: Brickle, Paul. South Atlantic Environmental Research Institute; Islas Georgias del Sur y Sandwich del SurFil: Costa, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaFil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaFil: Durante, Cristian Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaFil: Loizaga de Castro, Rocio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaFil: Poulin, Elie. Universidad de Chile; Chile. Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE); ChileFrontiers Media2021-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/159520Kraft, Sebastián; Pérez-Alvarez, M. José; Olavarría, Carlos; Moraga, Rodrigo; Baker, C. Scott; et al.; From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands; Frontiers Media; Frontiers In Marine Science; 8; 782512; 12-2021; 1-112296-7745CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2021.782512info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/fmars.2021.782512/fullinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:43:50Zoai:ri.conicet.gov.ar:11336/159520instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:43:50.697CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands |
title |
From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands |
spellingShingle |
From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands Kraft, Sebastián CEPHALORHYNCHUS COMMERSONII COLONIZATION DIVERGENCE LAST GLACIAL MAXIMUM MITOCHONDRIAL DNA PHYLOGEOGRAPHY |
title_short |
From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands |
title_full |
From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands |
title_fullStr |
From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands |
title_full_unstemmed |
From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands |
title_sort |
From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands |
dc.creator.none.fl_str_mv |
Kraft, Sebastián Pérez-Alvarez, M. José Olavarría, Carlos Moraga, Rodrigo Baker, C. Scott Steel, Debbie Tixier, Paul Guinet, Christophe Viricel, Amelia Brickle, Paul Costa, Marina Crespo, Enrique Alberto Durante, Cristian Alberto Loizaga de Castro, Rocio Poulin, Elie |
author |
Kraft, Sebastián |
author_facet |
Kraft, Sebastián Pérez-Alvarez, M. José Olavarría, Carlos Moraga, Rodrigo Baker, C. Scott Steel, Debbie Tixier, Paul Guinet, Christophe Viricel, Amelia Brickle, Paul Costa, Marina Crespo, Enrique Alberto Durante, Cristian Alberto Loizaga de Castro, Rocio Poulin, Elie |
author_role |
author |
author2 |
Pérez-Alvarez, M. José Olavarría, Carlos Moraga, Rodrigo Baker, C. Scott Steel, Debbie Tixier, Paul Guinet, Christophe Viricel, Amelia Brickle, Paul Costa, Marina Crespo, Enrique Alberto Durante, Cristian Alberto Loizaga de Castro, Rocio Poulin, Elie |
author2_role |
author author author author author author author author author author author author author author |
dc.subject.none.fl_str_mv |
CEPHALORHYNCHUS COMMERSONII COLONIZATION DIVERGENCE LAST GLACIAL MAXIMUM MITOCHONDRIAL DNA PHYLOGEOGRAPHY |
topic |
CEPHALORHYNCHUS COMMERSONII COLONIZATION DIVERGENCE LAST GLACIAL MAXIMUM MITOCHONDRIAL DNA PHYLOGEOGRAPHY |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Commerson’s dolphins (Cephalorhynchus commersonii) are separated into the subspecies C. c. commersonii, found along southern South America (SA) and the Falkland Islands/Islas Malvinas (FI/IM), and C. c. kerguelenensis, restricted to the subantarctic Kerguelen Islands (KI). Following the dispersal model proposed for the genus, the latter is thought to have originated from SA after a long-distance dispersal event. To evaluate this biogeographic scenario, a distribution-wide, balanced sampling of mitochondrial DNA (mtDNA) control region sequences was designed. New tissue samples from southern Chile, Argentina, FI/IM, and KI were added to published sequences from SA and KI, for a total of 256 samples. Genetic diversity indices, genetic and phylogeographic structure, and migration rates were calculated. One haplotype was shared between subspecies, with which all haplotypes of C. c. kerguelenensis formed a distinct group in the haplotype network. A new haplotype for C. c. kerguelenensis is reported. Differentiation in haplotype frequencies was found among localities within the distribution of C. c. commersonii, yet the phylogeographic signal was only statistically significant between subspecies. Coalescent-based historical gene flow estimations indicated migration between the northern and southern portions of the species’ range in SA as well as between SA and the FI/IM, but not between these and the KI. The net nucleotide divergence between dolphins from SA and the FI/IM was lower than the recommended threshold value suggested for delimiting subspecies, unlike that found between C. c. commersonii and C. c. kerguelenensis. The results are consistent with the model of post-glacial colonization of KI by South American C. commersonii, followed by an ongoing divergence process and subspecies status. Thus, C. c. kerguelenensis may represent the most recent diversification step of Cephalorhynchus, where isolation from their source population is driving a process of incipient speciation. Fil: Kraft, Sebastián. Universidad de Santiago de Chile. Facultad de Ciencias; Chile Fil: Pérez-Alvarez, M. José. Universidad de Santiago de Chile. Facultad de Ciencias; Chile. Universidad Mayor; Chile. Centro de Investigación Eutropia; Chile. Instituto milenio Biodiversidad de los Ecosistemas Antárticos y Subantárticos (BASE); Chile Fil: Olavarría, Carlos. Centro de Investigación Eutropia; Chile. Centro de Estudios Avanzados en Zonas Áridas (CEAZA); Chile Fil: Moraga, Rodrigo. Centro de Investigación Eutropia; Chile Fil: Baker, C. Scott. Oregon State University; Estados Unidos Fil: Steel, Debbie. Oregon State University; Estados Unidos Fil: Tixier, Paul. Université de Montpellier; Francia. Centre d’Etudes Biologiques de Chizé; Francia Fil: Guinet, Christophe. Centre d’Etudes Biologiques de Chizé; Francia Fil: Viricel, Amelia. Université de la Rochelle; Francia Fil: Brickle, Paul. South Atlantic Environmental Research Institute; Islas Georgias del Sur y Sandwich del Sur Fil: Costa, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina Fil: Durante, Cristian Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina Fil: Loizaga de Castro, Rocio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina Fil: Poulin, Elie. Universidad de Chile; Chile. Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE); Chile |
description |
Commerson’s dolphins (Cephalorhynchus commersonii) are separated into the subspecies C. c. commersonii, found along southern South America (SA) and the Falkland Islands/Islas Malvinas (FI/IM), and C. c. kerguelenensis, restricted to the subantarctic Kerguelen Islands (KI). Following the dispersal model proposed for the genus, the latter is thought to have originated from SA after a long-distance dispersal event. To evaluate this biogeographic scenario, a distribution-wide, balanced sampling of mitochondrial DNA (mtDNA) control region sequences was designed. New tissue samples from southern Chile, Argentina, FI/IM, and KI were added to published sequences from SA and KI, for a total of 256 samples. Genetic diversity indices, genetic and phylogeographic structure, and migration rates were calculated. One haplotype was shared between subspecies, with which all haplotypes of C. c. kerguelenensis formed a distinct group in the haplotype network. A new haplotype for C. c. kerguelenensis is reported. Differentiation in haplotype frequencies was found among localities within the distribution of C. c. commersonii, yet the phylogeographic signal was only statistically significant between subspecies. Coalescent-based historical gene flow estimations indicated migration between the northern and southern portions of the species’ range in SA as well as between SA and the FI/IM, but not between these and the KI. The net nucleotide divergence between dolphins from SA and the FI/IM was lower than the recommended threshold value suggested for delimiting subspecies, unlike that found between C. c. commersonii and C. c. kerguelenensis. The results are consistent with the model of post-glacial colonization of KI by South American C. commersonii, followed by an ongoing divergence process and subspecies status. Thus, C. c. kerguelenensis may represent the most recent diversification step of Cephalorhynchus, where isolation from their source population is driving a process of incipient speciation. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-12 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 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://hdl.handle.net/11336/159520 Kraft, Sebastián; Pérez-Alvarez, M. José; Olavarría, Carlos; Moraga, Rodrigo; Baker, C. Scott; et al.; From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands; Frontiers Media; Frontiers In Marine Science; 8; 782512; 12-2021; 1-11 2296-7745 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/159520 |
identifier_str_mv |
Kraft, Sebastián; Pérez-Alvarez, M. José; Olavarría, Carlos; Moraga, Rodrigo; Baker, C. Scott; et al.; From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands; Frontiers Media; Frontiers In Marine Science; 8; 782512; 12-2021; 1-11 2296-7745 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2021.782512 info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/fmars.2021.782512/full |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/2.5/ar/ |
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application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Frontiers Media |
publisher.none.fl_str_mv |
Frontiers Media |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.13397 |