On the phylogenetic position of a rare Iberian endemic mammal, the Pyrenean desman (Galemys pyrenaicus)
On the phylogenetic position of a rare Iberian endemic mammal, the Pyrenean desman (Galemys pyrenaicus)
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DOI：
10.1016/j.gene.2006.01.038
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发表时间：
2006-06-21
期刊：
影响因子：
3.5
通讯作者：
Zardoya, Rafael
中科院分区：
文献类型：
--
作者：
Cabria, Maria Teresa;Rubines, Jonathan;Zardoya, Rafael
为了建立该物种在胎盘树中不同分类水平的相对系统发育位置，测定了比利牛斯山犬（Galemys pyrenaicus）的完整线粒体基因组和9个部分核基因的核苷酸序列。根据线粒体细胞色素B基因全序列数据，推测了脂鲤科中脂鲤的系统发育关系。比利牛斯山的Desman是俄罗斯Desman（Desmana nioschata）的姐妹群，确认了Desmaninae亚科的单系性。然而，Talpidae内的主要谱系之间的系统发育关系不能自信地解决。基于线粒体（在氨基酸水平）和核（在核苷酸水平）序列数据集的系统发育分析确信地将desman置于Eulipotyphla（也包括鼹鼠，鼩，刺猬），并部分恢复胎盘序数间关系。支持Laurasiatheria（包括Eulipotyphla，Chiroptera，Carnivora，Pholidota，Perissodactyla和Cetartiodactyla）的单系性。石仙桃属（穿山甲）的线粒体氨基酸序列被发现偏向系统发育推断，由于长分支吸引效应。贝叶斯推理的基础上相结合的线粒体和核数据集没有石仙桃到达一个几乎完全解决的树，支持的基础位置Eulipotyphla内Laurasiatheria。(c)2006 Elsevier B.V.保留所有权利。
The nucleotide sequences of the complete mitochondrial genome and nine partial nuclear genes of the Pyrenean desman (Galemys pyrenaicus) were determined in order to establish the relative phylogenetic position of this species at different taxonomic levels within the placental tree. Phylogenctic relationships of desman within the family Talpidae were inferred based on complete mitochondrial cytochrome b gene nucleotide sequence data. The Pyrenean desman was unambiguously recovered as sister group of the Russian desman (Desmana nioschata) confirming the monophyly of the subfamily Desmaninae. However, phylogenetic relationships among major lineages within the Talpidae could not be confidently resolved. Phylogenetic analyses based on mitochondrial (at the amino acid level) and nuclear (at the nucleotide level) sequence data sets confidently placed desman within the Eulipotyphla (that also included moles, shrews, and hedgehogs), and partially recovered placental interordinal relationships. The monophyly of Laurasiatheria (including Eulipotyphla, Chiroptera, Carnivora, Pholidota, Perissodactyla, and Cetartiodactyla) was strongly supported. Mitochondrial amino acid sequences of Pholidota (pangolins) were found to bias phylogenetic inferences due to long-branch attraction effects. A Bayesian inference based on a combined initochondrial and nuclear data set without Pholidota arrived at an almost fully resolved tree that supported the basal position of Eulipotyphla within Laurasiatheria. (c) 2006 Elsevier B.V. All rights reserved.