Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry

Autores
Cunha, Haydeé A.; Loizaga de Castro, Rocio; Secchi, Eduardo Resende; Crespo, Enrique Alberto; Lailson Brito, José; Azevedo, Alexandre F.; Lazoski, Cristiano; Solé Cava, Antonio M.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The taxonomy of common dolphins (Delphinus sp.) has always been controversial, with over twenty described species since the original description of the type species of the genus (Delphinus delphis Linnaeus, 1758). Two species and four subspecies are currently accepted, but recent molecular data have challenged this view. In this study we investigated the molecular taxonomy of common dolphins through analyses of cytochrome b sequences of 297 individuals from most of their distribution. We included 37 novel sequences from the Southwestern Atlantic Ocean, a region where the short- and long-beaked morphotypesoccur in sympatry, but which had not been well sampled before. Skulls of individuals from the Southwestern Atlantic were measured to test the validity of the rostral index as a diagnostic character and confirmed the presence of the two morphotypes in our genetic sample. Our genetic results show that all common dolphins in the Atlantic Ocean belong to a single species, Delphinus delphis. According to genetic data, the species Delphinus capensis is invalid. Long-beaked common dolphins from the Northeastern Pacific Ocean may constitutea different species. Our conclusions prompt the need for revision of currently accepted common dolphin species and subspecies and of Delphinus delphis distribution.
Fil: Cunha, Haydeé A.. Universidade Do Estado de Rio Do Janeiro; Brasil
Fil: Loizaga de Castro, Rocio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Secchi, Eduardo Resende. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Lailson Brito, José. Universidade Do Estado Do Rio de Janeiro; Brasil
Fil: Azevedo, Alexandre F.. Universidade Do Estado de Rio Do Janeiro; Brasil
Fil: Lazoski, Cristiano. Universidade Federal do Rio de Janeiro; Brasil
Fil: Solé Cava, Antonio M.. Universidade Federal do Rio de Janeiro; Brasil
Materia
SYSTEMATICS
TAXONOMY
DELPHINUS DELPHIS
DELPHINUS CAPENSIS
DELPHINUS BAIRDII
DELPHINUS CAPENSIS TROPICALIS
DELPHINIDAE
CYTOCHROME B
MORPHOTYPE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/44403
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/44403
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in SympatryCunha, Haydeé A.Loizaga de Castro, RocioSecchi, Eduardo ResendeCrespo, Enrique AlbertoLailson Brito, JoséAzevedo, Alexandre F.Lazoski, CristianoSolé Cava, Antonio M.SYSTEMATICSTAXONOMYDELPHINUS DELPHISDELPHINUS CAPENSISDELPHINUS BAIRDIIDELPHINUS CAPENSIS TROPICALISDELPHINIDAECYTOCHROME BMORPHOTYPEhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The taxonomy of common dolphins (Delphinus sp.) has always been controversial, with over twenty described species since the original description of the type species of the genus (Delphinus delphis Linnaeus, 1758). Two species and four subspecies are currently accepted, but recent molecular data have challenged this view. In this study we investigated the molecular taxonomy of common dolphins through analyses of cytochrome b sequences of 297 individuals from most of their distribution. We included 37 novel sequences from the Southwestern Atlantic Ocean, a region where the short- and long-beaked morphotypesoccur in sympatry, but which had not been well sampled before. Skulls of individuals from the Southwestern Atlantic were measured to test the validity of the rostral index as a diagnostic character and confirmed the presence of the two morphotypes in our genetic sample. Our genetic results show that all common dolphins in the Atlantic Ocean belong to a single species, Delphinus delphis. According to genetic data, the species Delphinus capensis is invalid. Long-beaked common dolphins from the Northeastern Pacific Ocean may constitutea different species. Our conclusions prompt the need for revision of currently accepted common dolphin species and subspecies and of Delphinus delphis distribution.Fil: Cunha, Haydeé A.. Universidade Do Estado de Rio Do Janeiro; BrasilFil: Loizaga de Castro, Rocio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Secchi, Eduardo Resende. Universidade Federal do Rio Grande do Sul; BrasilFil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Lailson Brito, José. Universidade Do Estado Do Rio de Janeiro; BrasilFil: Azevedo, Alexandre F.. Universidade Do Estado de Rio Do Janeiro; BrasilFil: Lazoski, Cristiano. Universidade Federal do Rio de Janeiro; BrasilFil: Solé Cava, Antonio M.. Universidade Federal do Rio de Janeiro; BrasilPublic Library of Science2015-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/44403Cunha, Haydeé A.; Loizaga de Castro, Rocio; Secchi, Eduardo Resende; Crespo, Enrique Alberto; Lailson Brito, José; et al.; Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry; Public Library of Science; Plos One; 10; 11; 11-2015; 1-15; e01402511932-6203CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0140251info:eu-repo/semantics/altIdentifier/url/http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0140251info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:25:31Zoai:ri.conicet.gov.ar:11336/44403instacron: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:34982025-10-22 11:25:31.283CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry
title Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry
spellingShingle Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry
Cunha, Haydeé A.
SYSTEMATICS
TAXONOMY
DELPHINUS DELPHIS
DELPHINUS CAPENSIS
DELPHINUS BAIRDII
DELPHINUS CAPENSIS TROPICALIS
DELPHINIDAE
CYTOCHROME B
MORPHOTYPE
title_short Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry
title_full Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry
title_fullStr Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry
title_full_unstemmed Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry
title_sort Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry
dc.creator.none.fl_str_mv Cunha, Haydeé A.
Loizaga de Castro, Rocio
Secchi, Eduardo Resende
Crespo, Enrique Alberto
Lailson Brito, José
Azevedo, Alexandre F.
Lazoski, Cristiano
Solé Cava, Antonio M.
author Cunha, Haydeé A.
author_facet Cunha, Haydeé A.
Loizaga de Castro, Rocio
Secchi, Eduardo Resende
Crespo, Enrique Alberto
Lailson Brito, José
Azevedo, Alexandre F.
Lazoski, Cristiano
Solé Cava, Antonio M.
author_role author
author2 Loizaga de Castro, Rocio
Secchi, Eduardo Resende
Crespo, Enrique Alberto
Lailson Brito, José
Azevedo, Alexandre F.
Lazoski, Cristiano
Solé Cava, Antonio M.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv SYSTEMATICS
TAXONOMY
DELPHINUS DELPHIS
DELPHINUS CAPENSIS
DELPHINUS BAIRDII
DELPHINUS CAPENSIS TROPICALIS
DELPHINIDAE
CYTOCHROME B
MORPHOTYPE
topic SYSTEMATICS
TAXONOMY
DELPHINUS DELPHIS
DELPHINUS CAPENSIS
DELPHINUS BAIRDII
DELPHINUS CAPENSIS TROPICALIS
DELPHINIDAE
CYTOCHROME B
MORPHOTYPE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The taxonomy of common dolphins (Delphinus sp.) has always been controversial, with over twenty described species since the original description of the type species of the genus (Delphinus delphis Linnaeus, 1758). Two species and four subspecies are currently accepted, but recent molecular data have challenged this view. In this study we investigated the molecular taxonomy of common dolphins through analyses of cytochrome b sequences of 297 individuals from most of their distribution. We included 37 novel sequences from the Southwestern Atlantic Ocean, a region where the short- and long-beaked morphotypesoccur in sympatry, but which had not been well sampled before. Skulls of individuals from the Southwestern Atlantic were measured to test the validity of the rostral index as a diagnostic character and confirmed the presence of the two morphotypes in our genetic sample. Our genetic results show that all common dolphins in the Atlantic Ocean belong to a single species, Delphinus delphis. According to genetic data, the species Delphinus capensis is invalid. Long-beaked common dolphins from the Northeastern Pacific Ocean may constitutea different species. Our conclusions prompt the need for revision of currently accepted common dolphin species and subspecies and of Delphinus delphis distribution.
Fil: Cunha, Haydeé A.. Universidade Do Estado de Rio Do Janeiro; Brasil
Fil: Loizaga de Castro, Rocio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Secchi, Eduardo Resende. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Lailson Brito, José. Universidade Do Estado Do Rio de Janeiro; Brasil
Fil: Azevedo, Alexandre F.. Universidade Do Estado de Rio Do Janeiro; Brasil
Fil: Lazoski, Cristiano. Universidade Federal do Rio de Janeiro; Brasil
Fil: Solé Cava, Antonio M.. Universidade Federal do Rio de Janeiro; Brasil
description The taxonomy of common dolphins (Delphinus sp.) has always been controversial, with over twenty described species since the original description of the type species of the genus (Delphinus delphis Linnaeus, 1758). Two species and four subspecies are currently accepted, but recent molecular data have challenged this view. In this study we investigated the molecular taxonomy of common dolphins through analyses of cytochrome b sequences of 297 individuals from most of their distribution. We included 37 novel sequences from the Southwestern Atlantic Ocean, a region where the short- and long-beaked morphotypesoccur in sympatry, but which had not been well sampled before. Skulls of individuals from the Southwestern Atlantic were measured to test the validity of the rostral index as a diagnostic character and confirmed the presence of the two morphotypes in our genetic sample. Our genetic results show that all common dolphins in the Atlantic Ocean belong to a single species, Delphinus delphis. According to genetic data, the species Delphinus capensis is invalid. Long-beaked common dolphins from the Northeastern Pacific Ocean may constitutea different species. Our conclusions prompt the need for revision of currently accepted common dolphin species and subspecies and of Delphinus delphis distribution.
publishDate 2015
dc.date.none.fl_str_mv 2015-11
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/11336/44403
Cunha, Haydeé A.; Loizaga de Castro, Rocio; Secchi, Eduardo Resende; Crespo, Enrique Alberto; Lailson Brito, José; et al.; Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry; Public Library of Science; Plos One; 10; 11; 11-2015; 1-15; e0140251
1932-6203
CONICET Digital
CONICET
url http://hdl.handle.net/11336/44403
identifier_str_mv Cunha, Haydeé A.; Loizaga de Castro, Rocio; Secchi, Eduardo Resende; Crespo, Enrique Alberto; Lailson Brito, José; et al.; Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry; Public Library of Science; Plos One; 10; 11; 11-2015; 1-15; e0140251
1932-6203
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0140251
info:eu-repo/semantics/altIdentifier/url/http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0140251
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Public Library of Science
publisher.none.fl_str_mv Public Library of Science
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 12.982451

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