Phylogenetic status and timescale for the diversification of Steno and Sotalia dolphins.

Molecular data have provided many insights into cetacean evolution but some unsettled issues still remain. We estimated the topology and timing of cetacean evolutionary relationships using bayesian and maximum likelihood analyses of complete mitochondrial genomes. In order to clarify the phylogeneti...

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Autores principales:	Haydée A Cunha, Lucas C Moraes, Bruna V Medeiros, José Lailson-Brito, Vera M F da Silva, Antonio M Solé-Cava, Carlos G Schrago
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b56674aa6fe24a1184e8b0729ace32bb
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spelling	oai:doaj.org-article:b56674aa6fe24a1184e8b0729ace32bb2021-11-18T07:32:51ZPhylogenetic status and timescale for the diversification of Steno and Sotalia dolphins.1932-620310.1371/journal.pone.0028297https://doaj.org/article/b56674aa6fe24a1184e8b0729ace32bb2011-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22163290/?tool=EBIhttps://doaj.org/toc/1932-6203Molecular data have provided many insights into cetacean evolution but some unsettled issues still remain. We estimated the topology and timing of cetacean evolutionary relationships using bayesian and maximum likelihood analyses of complete mitochondrial genomes. In order to clarify the phylogenetic placement of Sotalia and Steno within the Delphinidae, we sequenced three new delphinid mitogenomes. Our analyses support three delphinid clades: one joining Steno and Sotalia (supporting the revised subfamily Stenoninae); another placing Sousa within the Delphininae; and a third, the Globicephalinae, which includes Globicephala, Feresa, Pseudorca, Peponocephala and Grampus. We also conclude that Orcinus does not belong in the Globicephalinae, but Orcaella may be part of that subfamily. Divergence dates were estimated using the relaxed molecular clock calibrated with fossil data. We hypothesise that the timing of separation of the marine and Amazonian Sotalia species (2.3 Ma) coincided with the establishment of the modern Amazon River basin.Haydée A CunhaLucas C MoraesBruna V MedeirosJosé Lailson-BritoVera M F da SilvaAntonio M Solé-CavaCarlos G SchragoPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 12, p e28297 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Haydée A Cunha Lucas C Moraes Bruna V Medeiros José Lailson-Brito Vera M F da Silva Antonio M Solé-Cava Carlos G Schrago Phylogenetic status and timescale for the diversification of Steno and Sotalia dolphins.
description	Molecular data have provided many insights into cetacean evolution but some unsettled issues still remain. We estimated the topology and timing of cetacean evolutionary relationships using bayesian and maximum likelihood analyses of complete mitochondrial genomes. In order to clarify the phylogenetic placement of Sotalia and Steno within the Delphinidae, we sequenced three new delphinid mitogenomes. Our analyses support three delphinid clades: one joining Steno and Sotalia (supporting the revised subfamily Stenoninae); another placing Sousa within the Delphininae; and a third, the Globicephalinae, which includes Globicephala, Feresa, Pseudorca, Peponocephala and Grampus. We also conclude that Orcinus does not belong in the Globicephalinae, but Orcaella may be part of that subfamily. Divergence dates were estimated using the relaxed molecular clock calibrated with fossil data. We hypothesise that the timing of separation of the marine and Amazonian Sotalia species (2.3 Ma) coincided with the establishment of the modern Amazon River basin.
format	article
author	Haydée A Cunha Lucas C Moraes Bruna V Medeiros José Lailson-Brito Vera M F da Silva Antonio M Solé-Cava Carlos G Schrago
author_facet	Haydée A Cunha Lucas C Moraes Bruna V Medeiros José Lailson-Brito Vera M F da Silva Antonio M Solé-Cava Carlos G Schrago
author_sort	Haydée A Cunha
title	Phylogenetic status and timescale for the diversification of Steno and Sotalia dolphins.
title_short	Phylogenetic status and timescale for the diversification of Steno and Sotalia dolphins.
title_full	Phylogenetic status and timescale for the diversification of Steno and Sotalia dolphins.
title_fullStr	Phylogenetic status and timescale for the diversification of Steno and Sotalia dolphins.
title_full_unstemmed	Phylogenetic status and timescale for the diversification of Steno and Sotalia dolphins.
title_sort	phylogenetic status and timescale for the diversification of steno and sotalia dolphins.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/b56674aa6fe24a1184e8b0729ace32bb
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Phylogenetic status and timescale for the diversification of Steno and Sotalia dolphins.

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