Arnason Ulfur, Adegoke Joseph A, Bodin Kristina, Born Erik W, Esa Yuzine B, Gullberg Anette, Nilsson Maria, Short Roger V, Xu Xiufeng, Janke Axel
Division of Evolutionary Molecular Systematics, University of Lund, S-223 62 Lund, Sweden.
Proc Natl Acad Sci U S A. 2002 Jun 11;99(12):8151-6. doi: 10.1073/pnas.102164299. Epub 2002 May 28.
The strict orthology of mitochondrial (mt) coding sequences has promoted their use in phylogenetic analyses at different levels. Here we present the results of a mitogenomic study (i.e., analysis based on the set of protein-coding genes from complete mt genomes) of 60 mammalian species. This number includes 11 new mt genomes. The sampling comprises all but one of the traditional eutherian orders. The previously unrepresented order Dermoptera (flying lemurs) fell within Primates as the sister group of Anthropoidea, making Primates paraphyletic. This relationship was strongly supported. Lipotyphla ("insectivores") split into three distinct lineages: Erinaceomorpha, Tenrecomorpha, and Soricomorpha. Erinaceomorpha was the basal eutherian lineage. Sirenia (dugong) and Macroscelidea (elephant shrew) fell within the African clade. Pholidota (pangolin) joined the Cetferungulata as the sister group of Carnivora. The analyses identified monophyletic Pinnipedia with Otariidae (sea lions, fur seals) and Odobenidae (walruses) as sister groups to the exclusion of Phocidae (true seals).
线粒体（mt）编码序列的严格直系同源性促进了它们在不同层次系统发育分析中的应用。在此，我们展示了一项对60种哺乳动物进行的有丝分裂基因组研究（即基于完整线粒体基因组中的蛋白质编码基因集进行的分析）的结果。这个数量包括11个新的线粒体基因组。样本涵盖了除一个传统真兽类目之外的所有目。之前未被代表的皮翼目（鼯猴）在灵长目内，作为类人猿亚目的姐妹群，这使得灵长目成为并系群。这种关系得到了有力支持。食虫目“食虫动物”分为三个不同的谱系：猬形亚目、马岛猬亚目和鼩形亚目。猬形亚目是基础真兽类谱系。海牛目（儒艮）和象鼩目（象鼩）属于非洲分支。鳞甲目（穿山甲）加入了鲸偶蹄目，作为食肉目的姐妹群。分析确定鳍足目是单系群，海狮科（海狮、海狗）和海象科（海象）是姐妹群，排除了海豹科（真海豹）。
