Genetic identification of two species of Pleuronichthys by DNA barcoding
文献类型: 外文期刊
第一作者: Zhang Hui
作者: Zhang Hui;Gao Tianxiang;Zhang Yan;Li Pengfei;Xu Hanxiang
作者机构:
关键词: Pleuronichthys;DNA barcoding;COI;CR;Cyt b
期刊名称:CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY ( 影响因子:1.068; 五年影响因子:0.983 )
ISSN: 0254-4059
年卷期: 2011 年 29 卷 5 期
页码:
收录情况: SCI
摘要: DNA barcoding is a new method for biological taxonomy, offering the ability to identify species from fragments in any life-history stage. Pleuronichthys cornutus and P. japonicus are two morphologically similar species. Pleuronichthys japonicus has never been found previously in China. However, in this study, we identified both species using DNA barcoding (cytochrome c oxidase subunit I (COI)), the mtDNA control region and cytochrome b. The results reveal that: 1) intraspecific variation in the DNA barcode is much less than interspecific variation; 2) the two morphologically similar species were placed into separate clades distinguishable by high bootstrap values; 3) COI barcodes are more powerful for identifying the two species than the other two mtDNA fragments.
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