Taxonomic status of the genus Sotalia:: Species level ranking for "tucuxi" (Sotalia fluviatilis) and "costero" (Sotalia guianensis) dolphins
Taxonomic status of the genus Sotalia:: Species level ranking for "tucuxi" (Sotalia fluviatilis) and "costero" (Sotalia guianensis) dolphins
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DOI：
10.1111/j.1748-7692.2007.00110.x
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发表时间：
2007-04-01
影响因子：
2.3
通讯作者：
Baker, C. S.
中科院分区：
文献类型：
--
作者：
Caballero, S.;Trujillo, F.;Baker, C. S.
索塔利亚海豚分布在中美洲和南美洲的加勒比海和大西洋沿岸以及亚马逊河及其大部分支流中。目前，这些海豚的分类仍未解决。尽管在 1800 年代后期描述了 5 个物种，但目前仅识别出一种物种（Sotalia Fluviatilis），它有两个生态型或亚种：沿海亚种（Sotalia Fluviatilis guianensis）和河流亚种（Sotalia Fluviatilis Fluviatilis）。最近的形态测量分析以及线粒体 DNA 分析表明，每个亚种都被视为独立的物种。在这里，我们回顾了该属的分类历史，并提出了来自十个核基因和三个线粒体基因的新遗传证据，支持根据谱系/谱系一致性物种概念和不可逆分化标准将每个亚种提升到物种水平。我们还从先前发表和未发表的遗传、形态学和生态研究中回顾了这一分类学修订的其他证据。我们建议沿海物种 Sotalia guianensis (Van Beneden 1864) 通用名为“costero”，并接受先前提出的河流物种“tucuxi”海豚 Sotalia Fluviatilis (Gervais, 1853)。
Dolphins of the genus Sotalia are found along the Caribbean and Atlantic coasts of Central and South America and in the Amazon River and most of its tributaries. At present, the taxonomy of these dolphins remains unresolved. Although five species were described in the late 1800s, only one species is recognized currently (Sotalia fluviatilis) with two ecotypes or subspecies, the coastal subspecies (Sotalia fluviatilis guianensis) and the riverine subspecies (Sotalia fluviatilis fluviatilis). Recent morphometric analyses, as well as mitochondrial DNA analysis, suggested recognition of each subspecies as separate species. Here we review the history of the classification of this genus and present new genetic evidence from ten nuclear and three mitochondrial genes supporting the elevation of each subspecies to the species level under the Genealogical/Lineage Concordance Species Concept and the criterion of irreversible divergence. We also review additional evidence for this taxonomic revision from previously published and unpublished genetic, morphological, and ecological studies. We propose the common name "costero" for the coastal species, Sotalia guianensis (Van Beneden 1864), and accept the previously proposed "tucuxi" dolphin, Sotalia fluviatilis (Gervais, 1853), for the riverine species.