Species and genetic diversity of Bandicota (Murinae, Rodentia) from Myanmar based on mitochondrial and nuclear gene sequences
Species and genetic diversity of Bandicota (Murinae, Rodentia) from Myanmar based on mitochondrial and nuclear gene sequences
复制标题
基于线粒体和核基因序列的缅甸班迪科动物（鼠亚科、啮齿目）的物种和遗传多样性
DOI：
10.1007/s13364-020-00491-1
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发表时间：
2020
期刊：
影响因子：
1.5
通讯作者：
Hitoshi Suzuki
中科院分区：
文献类型：
--
作者：
Satoko Mori;Thidalay Thwe;Wai Min Thu;Shumpei P. Yasuda;Saw Bawm;Kimiyuki Tsuchiya;Ken Katakura;Satoru Arai;Kumiko Yoshimatsu;Hitoshi Suzuki
Bandicoot rats （bandicota属），被广泛认为是啮齿动物，在印度-马来亚地区的大陆部分大量分布。然而，它们的进化历史还没有被很好地理解。根据从缅甸采集的三种大鼠（Bandicota bengalensis、Bandicota indica和Bandicota savilei）标本的基因序列和数据库序列，评估了三种大鼠的分子系统发育关系。b。savilei（150 - 170万年前）是由线粒体细胞色素（Cytb）基因和核间光受体类维生素a结合蛋白（Irbp）以及黑素皮质素1受体（Mc1r）基因序列推断出来的。TheCytblineage富含。b来自斯里兰卡的孟加拉人不同于b的大陆谱系的单系谱系。bengalensisandB。籼稻。这可以解释为，由于在核标记中没有观察到实质性的种内地理细分，由于雌性的亲缘性和雄性的分散，在岛屿种群中保存了古代线粒体DNA （mtDNA）。b。bengalensiswithB。这可能是由于线粒体dna的渗入。bengalensistoB。b .这一结论是正确的，但需要进一步的调查来证实。来自缅甸广大地区的bengalensis cytb序列具有有限的核苷酸多样性（π = 0.00079），表明b。缅甸bengalensis是通过全新世人类活动获得的。
Bandicoot rats (genusBandicota), widely known as rodent pests, are abundant and widespread throughout the continental part of the Indo-Malayan realm. However, their evolutionary history is not yet well understood. The molecular phylogenetic relationships of the three bandicoot rat species,Bandicota bengalensis,Bandicota indica, andBandicota savilei, were assessed based on the gene sequences of the specimens collected from Myanmar, where all three species occur along with database sequences. Early divergence ofB. savilei(1.5–1.7 million years ago) was inferred from the mitochondrial cytochromeb(Cytb) gene and the nuclear interphotoreceptor retinoid-binding protein (Irbp), and melanocortin 1 receptor (Mc1r) gene sequences. TheCytblineage ofB. bengalensisfrom Sri Lanka was distinct from the monophyletic lineage of the continental lineages ofB. bengalensisandB. indica. This can be explained by the preservation of ancient mitochondrial DNA (mtDNA) in the insular population owing to female philopatry and male dispersal, given that no substantial intraspecies geographic subdivision was observed in the nuclear markers. The paraphyletic relationship ofB. bengalensiswithB. indicamay be explained by introgression of the mtDNA fromB. bengalensistoB. indica, but further investigation is required to confirm this.B. bengalensis Cytbsequences from a wide area of Myanmar had limited nucleotide diversity (π = 0.00079), implying that the genetic diversity ofB. bengalensisin Myanmar was acquired through Holocene human activities.