Relationships among major lineages of characid fishes (Teleostei: Ostariophysi: Characiformes), based on molecular sequence data
Relationships among major lineages of characid fishes (Teleostei: Ostariophysi: Characiformes), based on molecular sequence data
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DOI：
10.1016/j.ympev.2009.08.026
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发表时间：
2010-02-01
影响因子：
4.1
通讯作者：
Burns, John R.
中科院分区：
文献类型：
--
作者：
Javonillo, Robert;Malabarba, Luiz R.;Burns, John R.
白鲑科是一组淡水硬骨鱼，具有高度的物种多样性，其成员栖息在德克萨斯州，墨西哥和中美洲和南美洲的部分地区。到目前为止，形态学数据在识别轮藻科亚科和未定属之间的关系方面的作用有限。在这项研究中，从GenBank中的DNA序列数据与新的序列相结合的贝叶斯和简约方案下进行分析。序列分为四个基因分区，其中三个基因在线粒体亚群中（125，165，COI基因），一个基因在核亚群中（RAG2基因）。推断的贝叶斯和基于简约的遗传学拒绝某些群体的单系性（例如，Astyanax，Hyphessobrycon和Bryconamericus），不拒绝其他的单系性（例如，Cheirodontinae和以前作者的“进化枝A”），并提出了新的姐妹群假说（例如，Brittanichthys sister to Paracheirodon）。进化枝A的姊妹系是在本文中称为“进化枝B”的谱系，其包括外齿兽和来自唇齿兽亚科（进化枝B内最基础的谱系）、隐脂鲤亚科、四角翼龙亚科和齿鲨亚科（不包括颌脂鲤属）的样本。“进化枝C”是A + B的姐妹，并且包含大的不确定类属的代表（例如，Hyphessobrycon，Hemigrammus），以及Stethaprioninae的成员。除非某些其他亚科名称被忽略，Tetragonopterinae的使用应继续限于Tetragonopterus的物种，因为其他属先前提到这个亚科的分支A或C，与Tetragonopterus相当遥远。(C)2009 Elsevier Inc.版权所有
The family Characidae is a group of freshwater bony fishes that exhibits high species-level diversity and whose members inhabit parts of Texas, Mexico, and Central and South America. Thus far, morphological data have been of limited use in discerning relationships among subfamilies and incertae sedis genera of the family Characidae. In this study, DNA sequence data from GenBank were combined with new sequences for analyses under Bayesian and parsimony schemes. Sequences fell into four gene partitions, with three genes in the mitochondrial subset (125, 165, COI genes) and one gene in the nuclear subset (RAG2 gene). Inferred Bayesian and parsimony-based phylogenies reject the monophyly of certain groups (e.g., Astyanax, Hyphessobrycon, and Bryconamericus), do not reject the monophyly of others (e.g., Cheirodontinae and "clade A" of previous authors), and present new sister-group hypotheses (e.g., Brittanichthys sister to Paracheirodon). Sister to clade A is a lineage referred to herein as "clade B" which includes Exodon and exemplars from Cheirodontinae (the most basal lineage within clade B), Aphyocharacinae, Tetragonopterinae, and Characinae (excluding Gnathocharax). "Clade C" is sister to A + B and contains representatives of large incertae sedis genera (e.g., Hyphessobrycon, Hemigrammus), as well as members of Stethaprioninae. Unless certain other subfamilial names are to be disregarded, the use of Tetragonopterinae should continue to be restricted to species of Tetragonopterus because other genera previously referred to this subfamily grouped in clades A or C, quite distant from Tetragonopterus. (C) 2009 Elsevier Inc. All rights reserved