Molecular phylogeny of the medaka fishes genus Oryzias (Beloniformes: Adrianichthyidae) based on nuclear and mitochondrial DNA sequences
Molecular phylogeny of the medaka fishes genus Oryzias (Beloniformes: Adrianichthyidae) based on nuclear and mitochondrial DNA sequences
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DOI：
10.1016/j.ympev.2005.01.016
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发表时间：
2005-08-01
影响因子：
4.1
通讯作者：
Sakaizumi, M
中科院分区：
文献类型：
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作者：
Takehana, Y;Naruse, K;Sakaizumi, M
利用核酪氨酸酶和线粒体12S和16S rRNA基因研究了青鳉属（Oryzias）和异斑鳉属（Xenopoecilus）青鳉鱼的系统发育关系。在目前描述的23种中，研究了Oryzias的13种和Xenopoecilus的2种。从核和线粒体数据得到的树拓扑结构是一致的，表明Xenopoecilus是一个多系属内Oryzias嵌套。这一结果表明，有必要对该属进行系统研究和分类修订。所有数据分区的组合数据分析产生了解析良好的树，其中大多数内部分支由高统计值支持。根据我们的综合数据系统发育，我们将Oryzias物种分为三个主要的种组，即latipes，javanicus和celebensis组。这三个组对应于三个染色体组（双臂，单臂，融合染色体组）先前提出的核型分析。这一地理格局表明，苏拉威西岛与大陆架之间存在着历史上的分隔关系。(c)2005年爱思唯尔公司All rights reserved.
The phylogenetic relationships among medaka fishes of 2 genera, Oryzias and Xenopoecilus, were studied using the nuclear tyrosinase and mitochondrial 12S and 16S rRNA genes. Of the 23 species currently described for these genera, 13 species of Oryzias and 2 species of Xenopoecilus were examined. The tree topologies obtained from the nuclear and mitochondrial data were consistent, indicating that Xenopoecilus is a polyphyletic genus nested within Oryzias. This result suggested the necessity for a systematic study and taxonomic revision of Xenopoecilus. The combined data analysis of all data partitions resulted in a well-resolved tree, with most internal branches supported by high statistical values. Based on our combined data phylogeny, we divided the Oryzias species into three major species groups, namely the latipes, javanicus, and celebensis groups. These three groups corresponded to the three chromosomal groups (biarmed, monoarmed, and fused chromosome groups) previously proposed from karyological analyses. The phylogeographic pattern suggests historical vicariance between Sulawesi Island and the continental shelf. (c) 2005 Elsevier Inc. All rights reserved.