Molecular phylogeny and evidence for an adaptive radiation of geophagine cichlids from South America (Perciformes: Labroidei)
Molecular phylogeny and evidence for an adaptive radiation of geophagine cichlids from South America (Perciformes: Labroidei)
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DOI：
10.1016/j.ympev.2004.09.004
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发表时间：
2005-01-01
影响因子：
4.1
通讯作者：
Winemiller, KO
中科院分区：
文献类型：
--
作者：
López-Fernández, H;Honeycutt, RL;Winemiller, KO
从线粒体ND 4基因和核RAG 2基因的核苷酸序列被用来获得最广泛的分子系统发育的新热带慈鲷亚科Geophaginae。根据这些新的数据，以前的假设的关系进行了测试，并提供了所有现有的分子信息的合成。新的系统发育研究结果包括支持：（1）一个包含Geophagus sensu lato，Gymnogeophagus，Mikrogeophagus，Biotophagus，Crenicara和Dicrossus属的“大分支”;（2）一个包括Satanoperea，Apistograrnma，Apistogrammoides和Taeniacara属的分支;（3）Kullander的分支Acarichthyini的确证。ND 4表现出饱和效应在第三个代码的位置和谱系特异性率的异质性，这两个影响生育重建时，只有平等加权简约。这两个分支长度和内部分支测试显示，非常短的基底节点，增加支持的想法，geophagine慈鲷经历了适应性辐射感Schluter，涉及生态形态专业化和生活史多样化。(C)2004年爱思唯尔公司All rights reserved.
Nucleotide sequences from the mitochondrial ND4 gene and the nuclear RAG2 gene were used to derive the most extensive molecular phylogeny to date for the Neotropical cichlid subfamily Geophaginae. Previous hypotheses of relationships were tested in light of these new data and a synthesis of all existing molecular information was provided. Novel phylogenetic findings included support for: (1) a 'Big Clade' containing the genera Geophagus sensu lato, Gymnogeophagus, Mikrogeophagus, Biotodoma, Crenicara, and Dicrossus; (2) a clade including the genera Satanoperea, Apistograrnma, Apistogrammo ides, and Taeniacara; and (3) corroboration for Kullander's clade Acarichthyini. ND4 demonstrated saturation effects at the third code position and lineage-specific rate heterogeneity, both of which influenced phylogeny reconstruction when only equal weighted parsimony was employed. Both branch lengths and internal branch tests revealed extremely short basal nodes that add support to the idea that geophagine cichlids have experienced an adaptive radiation sensu Schluter that involved ecomorphological specializations and life history diversification. (C) 2004 Elsevier Inc. All rights reserved.