Molecular phylogeny of the blind cavefish Phreatichthys andruzzii and Garra barreimiae within the family Cyprinidae
Molecular phylogeny of the blind cavefish Phreatichthys andruzzii and Garra barreimiae within the family Cyprinidae
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DOI：
10.1007/s10641-008-9393-z
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发表时间：
2009-01-01
影响因子：
1.4
通讯作者：
Tagliavini, James
中科院分区：
文献类型：
--
作者：
Colli, Licia;Paglianti, Annalisa;Tagliavini, James
通过对线粒体细胞色素 b 基因进行测序，研究了属于鲤科的两种洞穴鱼 Phreatichthys andruzzii 和 Garra barreimiae 的系统发育关系。这些洞穴鱼物种分别原产于索马里（非洲东部）和阿曼（阿拉伯半岛东南部），到目前为止，尚未为其分类学和系统发育位置提供分子支持。细胞色素b序列分析表明，该物种是单系类群，彼此之间以及与Garra属的其他物种密切相关。分子钟计算可以将这些地下物种的起源追溯到上更新世，并支持非洲鲤鱼起源于亚洲祖先的中新世移民的假设。
The phylogenetic relationships of two cavefish, Phreatichthys andruzzii and Garra barreimiae, belonging to the family Cyprinidae, were investigated by sequencing the mitochondrial cytochrome b gene. These cavefish species are native to Somalia (eastern Africa) and Oman (southeastern Arabian peninsula), respectively, and so far no molecular support to their taxonomy and phylogenetic position was ever provided. The analysis of cytochrome b sequences showed that the species are monophyletic taxa, closely related to each other and to other species of the genus Garra. Molecular clock calculations allowed to date the origin of these hypogaean species back to the Plio-Pleistocene and support the hypothesis that African cyprinids originated from Miocenic immigrations of Asian ancestors.