Phylogenetic history of mustelid fauna in Taiwan inferred from mitochondrial genetic loci
Phylogenetic history of mustelid fauna in Taiwan inferred from mitochondrial genetic loci
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DOI：
10.1139/z11-029
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发表时间：
2011-06-01
影响因子：
1.4
通讯作者：
Suzuki, H.
中科院分区：
文献类型：
--
作者：
Hosoda, T.;Sato, J. J.;Suzuki, H.
利用三个线粒体基因位点（细胞色素b（MT - CYB；1140bp）、NADH脱氢酶亚基2（MT - ND2；1044bp）和置换环（MT - DLOOP；540bp））的组合核苷酸序列，对鼬科（Mustelidae）物种间的系统发育关系进行了研究，特别关注了四种台湾鼬科物种的系统发育历史：黄喉貂（Martes flavigula，博代尔特，1785）、鼬獾（Melogale moschata，格雷，1831）、伶鼬（Mustela nivalis，林奈，1766）和黄鼬（Mustela sibirica，帕拉斯，1773）。对线粒体基因位点组合序列的最大似然系统发育分析得出的拓扑结构在物种水平上与先前研究基本一致。种内遗传变异分析显示，来自台湾和越南的两只鼬獾个体的遗传距离与鼬科谱系内的种间变异相当。此外，最近在台湾发现的伶鼬，其与其他大陆同种个体的遗传分化程度并不像先前的形态学调查所表明的那样大。通过贝叶斯宽松分子钟方法对台湾和欧亚大陆鼬科谱系的分化时间估计表明，在更新世期间，鼬科动物从大陆多次迁徙到台湾，根据台湾鼬科物种不同的隔离历史形成了特有性的等级模式。
Phylogenetic relationships among species of the family Mustelidae were examined using the combined nucleotide sequences of the three mitochondrial genetic loci (cytochrome b (MT-CYB; 1140 bp), NADH dehydrogenase subunit 2 (MT-ND2; 1044 bp), and displacement loop (MT-DLOOP; 540 bp)), with special emphasis on the phylogenetic history of four Taiwanese mustelid species: Martes flavigula (Boddaert, 1785), Melogale moschata (Gray, 1831), Mustela nivalis L., 1766, and Mustela sibirica Pallas, 1773. Maximum likelihood phylogenetic analysis of the combined sequences of the mitochondrial genetic loci produced a topology largely congruent with that of previous studies at the species level. Analyses of intra-specific genetic variations revealed two Melogale moschata individuals from Taiwan and Vietnam that showed genetic distances comparable with interspecific variations within the mustelid lineages. Furthermore, Mustela nivalis, recently discovered in Taiwan, was not as genetically differentiated from other continental conspecific individuals as a previous morphological survey suggested. Divergence time estimations for the mustelid lineages of Taiwan and the Eurasian continent by the Bayesian relaxed molecular clock approach suggested multiple colonization of Taiwan by mustelids from the continent during the Pleistocene, creating a hierarchical pattern of endemism based on the differential isolation history of the mustelid species in Taiwan.