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DNA barcoding of Pacific Canada's fishes

机译：加拿大太平洋鱼类的DNA条码

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摘要

DNA barcoding-sequencing a standard region of the mitochondrial cytochrome c oxidase 1 gene (COT)— promises a rapid, accurate means of identifying animals to a species level. This study establishes that sequence variability in the barcode region permits discrimination of 98% of 201 fish species from the Canadian Pacific. The average sequence variation within species was 0.25%, while the average distance separating species within genera was 3.75%. The latter value was considerably lower than values reported in other studies, reflecting the dominance of the Canadian fauna by members of the young and highly diverse genus Sebastes. Although most sebastids possessed distinctive COI sequences, four species did not. As a partial offset to these cases, the barcode records indicated the presence of a new, broadly distributed species of Paraliparis and the possibility that Paraliparis pectoralis is actually a species pair. The present study shows that most fish speciesrnin Pacific Canadian waters correspond to a single, tightly cohesive array of barcode sequences that are distinct from those of any other species, but also highlights some taxo-nomic issues that need further investigation.
机译：DNA条形码对线粒体细胞色素C氧化酶1基因（COT）的标准区域进行测序-有望以一种快速，准确的方式将动物识别到物种水平。这项研究建立了条形码区域中的序列变异性，可以区分来自加拿大太平洋的201种鱼类中的98％。种内的平均序列变异为0.25％，而属内种间的平均距离为3.75％。后者的值大大低于其他研究报告的值，这反映了年轻而高度多样化的塞巴斯蒂斯属成员在加拿大动物区系中的主导地位。尽管大多数脂溢族具有独特的COI序列，但四个物种则没有。作为这些情况的部分抵销，条形码记录表明存在新的，广泛分布的副唇鱼物种，并认为胸副肌实际上是一个物种对。本研究表明，加拿大太平洋水域中的大多数鱼类物种都与条形码序列的单个紧密结合阵列相对应，这与其他物种的条形码序列截然不同，但也突显了一些需要进一步研究的分类学问题。

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  • 来源
    《Marine biology》 |2009年第12期|2641-2647|共7页
  • 作者

    Dirk Steinke; rnTyler S. Zemlak; rnJames A. Boutillier; Paul D. N. Hebert;

  • 作者单位

    Canadian Centre for DNA Barcoding, Biodiversity Institute of Ontario, University of Guelph, 579 Gordon Street, Guelph, ON N1G 2W1, Canada;

    rnCanadian Centre for DNA Barcoding, Biodiversity Institute of Ontario, University of Guelph, 579 Gordon Street, Guelph, ON N1G 2W1, Canada Department of Biology, Dalhousie University, 1355 Oxford St., Halifax, NS B3H 4J1, Canada;

    rnPacific Biological Station, Fisheries and Oceans Canada, 3190 Hammond Bay Rd, Nanaimo, BC V9T 6N7, Canada;

    rnCanadian Centre for DNA Barcoding, Biodiversity Institute of Ontario, University of Guelph, 579 Gordon Street, Guelph, ON N1G 2W1, Canada;

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