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DOI:	10.1371/journal.pone.0140251
论文题名:	Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry
作者:	Haydée A. Cunha; Rocio Loizaga de Castro; Eduardo R. Secchi; Enrique A. Crespo; José Lailson-Brito; Alexandre F. Azevedo; Cristiano Lazoski; Antonio M. Solé-Cava
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2015
发表日期:	2015-11-11
卷:	10, 期:11
语种:	英语
英文关键词:	Dolphins ; Phylogenetic analysis ; Skull ; Haplotypes ; Invasive species ; Taxonomy ; Biopsy ; Sequence analysis
英文摘要:	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 morphotypes occur 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 constitute a different species. Our conclusions prompt the need for revision of currently accepted common dolphin species and subspecies and of Delphinus delphis distribution.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0140251&type=printable
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资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/22567
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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journal.pone.0140251.PDF（1356KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Laboratório de Mamíferos Aquáticos e Bioindicadores (MAQUA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil;Laboratório de Biodiversidade Molecular, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil;Laboratorio de Mamíferos Marinos, Centro Nacional Patagónico–CONICET, Puerto Madryn, Chubut, Argentina;Laboratório de Ecologia e Conservação da Megafauna Marinha (EcoMega), Instituto de Oceanografia, Fundação Universitária do Rio Grande, Rio Grande, Rio Grande do Sul, Brazil;Laboratorio de Mamíferos Marinos, Centro Nacional Patagónico–CONICET, Puerto Madryn, Chubut, Argentina;Laboratório de Mamíferos Aquáticos e Bioindicadores (MAQUA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil;Laboratório de Mamíferos Aquáticos e Bioindicadores (MAQUA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil;Laboratório de Biodiversidade Molecular, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil;Laboratório de Biodiversidade Molecular, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil

Recommended Citation:

Haydée A. Cunha,Rocio Loizaga de Castro,Eduardo R. Secchi,et al. Molecular and Morphological Differentiation of Common Dolphins (Delphinus sp.) in the Southwestern Atlantic: Testing the Two Species Hypothesis in Sympatry[J]. PLOS ONE,2015-01-01,10(11)

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