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

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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.

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Acknowledgements

This work was supported by the National Natural Science Funds (No. 31402305), the Natural Science Foundation of Sichuan Province (No. 2017JY0161), and the Scientific Research Fund of Sichuan Education Department (Nos. 18ZB0328, KYTD201009).

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Correspondence to Zheng-Yong Wen.

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The authors Rui Li, Gang Wang, Zheng-Yong Wen, Yuan-Chao Zou, Chuan-Jie Qin, Yu Luo, Jun Wang and Gui-Hong Chen declare that they have no conflict of interest.

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This article does not contain any studies with human subjects by any of the authors. The animal experiment throughout the study was conducted according to the Chinese Ministry of Science and Technology Guiding Directives for Humane Treatment of Laboratory Animals.

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Li, R., Wang, G., Wen, ZY. et al. Complete mitochondrial genome of a kind of snakehead fish Channa siamensis and its phylogenetic consideration. Genes Genom 41, 147–157 (2019). https://doi.org/10.1007/s13258-018-0746-5

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  • DOI: https://doi.org/10.1007/s13258-018-0746-5

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