Structure of mitochondrial DNA control region and molecular phylogenetic relationship among three flounders of genus Pleuronectes |
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Authors: | Yan Zhang Hui Zhang Tianxiang Gao Zhenqing Miao |
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Affiliation: | 1. Fishery College, Zhejiang Ocean University, Zhoushan 316004, China;2. Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;3. Fisheries College, Ocean University of China, Qingdao 266003, China |
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Abstract: | Structure of mitochondrial DNA control region about three flounders – Pleuronectes yokohama, Pleuronectes schrenki and Pleuronectes herzensteini – were reported. The TAS, cTAS, CSB-A to CSB-F and CSB-1 to CSB-3 were detected in these three flounders. The results indicated that the structures of these parts were different from most fishes. All the mtDNA control region sequences of the three founders have tandem repeat sequences in the downstream of CSB-3, which is different from most vertebrates. According to the structure of the mtDNA control region, P. yokohama was more similar with P. schrenki and P. herzensteini was much different from the other two species. In addition, three segments such as control region, Cytb and COI are used to analyze the phylogenic relationships of the three species. The genetic distances and phylogenetic tree results support the classification by traditional morphology. It is not clear if P. yokohama and P. schrenki belong to the same species, and this should be accepted with caution. |
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