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Mitochondrial Genetic Diversity of the Freshwater Snail Melanoides tuberculata

机译：淡水蜗牛黑色菌簇绒的线粒体遗传多样性

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According to geological history, Peninsular Malaysia and Borneo formed at different times and were once connected during Quaternary glaciations. To determine how this history has influenced phylogeography, our study examined the population genetic structure of the tropical freshwater gastropod Melanoides tuberculata across Peninsular Malaysia and Borneo using the sequences from mitochondrial DNA 16S rRNA and cytochrome oxidase subunit I genes (1168bp). In total, 104 specimens were collected from seventeen populations. All mtDNA haplotypes were identified as belonging to two highly divergent lineages, and these lineages were almost allopatric in their distributions. Our study found that the freshwater fauna in Malaysia might be divided into four regions: northeast Peninsular Malaysia, northwest Peninsular Malaysia, south Peninsular Malaysia, and Borneo. The phylogeography of M. tuberculata in Malaysia was shaped by the landforms of Peninsular Malaysia and by the paleo-river systems in the Sunda continental shelf. In addition, our study found that these two lineages in Malaysia have invaded the globe. These results suggest that Malaysia is located in important shipping lanes throughout the world, and the populations of M. tuberculate might be widely distributed throughout the world by shipping.
机译：根据地质历史，半岛马来西亚和婆罗洲在不同时间形成，曾经在第四纪冰川期间连接。为了确定这一历史如何影响辐射地理，我们的研究通过线粒体DNA 16s rRNA和细胞色素氧化酶亚基I基因（1168bp）的序列检测了跨半岛马来西亚的热带淡水加麻黑素植物群遗传结构。共有104种样品从十七种群中收集。所有MTDNA单倍型被鉴定为属于两种高度发散的谱系，并且这些谱系几乎是其分布中的分类缺陷。我们的研究发现，马来西亚的淡水动物群可能分为四个地区：东北半岛马来西亚，西北半岛马来西亚，南半岛马来西亚和婆罗洲。马来西亚的M.Tuberculata的局部植物由半岛马来西亚和Sunda大陆架的古河系统的塑造而成。此外，我们的研究发现，马来西亚的这两个谱系已经侵犯了全球。这些结果表明，马来西亚位于全世界的重要航道中，玉米菌群的种群可能通过运输方式广泛分布。

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