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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/159520
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/159520
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling 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 Técnicas2025-09-29T09:33:17Zoai: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:34982025-09-29 09:33:17.84CONICET 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/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.069144

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