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Genes Genomics. 2019 Feb;41(2):147-157. doi: 10.1007/s13258-018-0746-5. Epub 2018 Sep 21.

Complete mitochondrial genome of a kind of snakehead fish Channa siamensis and its phylogenetic consideration.

Author information

1
Conservation and Utilization of Fishes Resources in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, College of Life Sciences, Neijiang Normal University, Neijiang, 641100, Sichuan, China.
2
Conservation and Utilization of Fishes Resources in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, College of Life Sciences, Neijiang Normal University, Neijiang, 641100, Sichuan, China. zhengyong_wen@126.com.
3
BGI Education Center, University of Chinese Academy of Sciences, Shenzhen, 518083, China. zhengyong_wen@126.com.
4
Institute of Aquaculture, Neijiang Academy of Agricultural Sciences, Neijiang, 641000, Sichuan, China.

Abstract

The snakehead fish, Channa siamensis, belongs to the genus of Channa (perciformes: Channidae) and was first reported by Günther in 1861. Despite it has been described approximately for 15 decades, the genetic information is limited and the taxon status of this kind of fish is still unclear. The primary objective of this study is to get more genomic data and calculate the taxon location of this kind of fish. The next generation sequencing method was used to obtain the whole mitochondrial DNA information, and bioinformatic analysis was performed to investigate the evolutionary status and taxon location of C. siamensis. The circular mitochondrial DNA was 16,570 bp in length, and which showed typical piscine structure and arrangement. The overall nucleotide composition was 29.28% A, 24.72% T, 30.71% C, 15.29% G, with 54.1% AT, respectively. Phylogenetic analyses using concatenated amino acid and nucleotide sequences of the 13 protein-coding genes with two different methods (Maximum likelihood and Bayesian analysis) both highly supported C. siamensis belongs to the genus Channa and shows a close relationship with C. micropeltes. These data will provide more useful information for a better understanding of the mitochondrial genomic diversities and evolution in fish as well as novel genetic markers for studying population genetics and species identification.

KEYWORDS:

Channa siamensis; Genes arrangement; Mitochondrial genome; Phylogenetic analysis

PMID:
30242740
DOI:
10.1007/s13258-018-0746-5
[Indexed for MEDLINE]

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