Complete mitochondrial genome of Triplophysa bleekeri (Cypriniformes: Balitoridae: Nemacheilinae), and analysis of mitochondrial genetic variability among Triplophysa species

Abstract

The complete mitochondrial genome of the stone loach Triplophysa bleekeri collected from the Anning River, a tributary of the Yalong River, in Sichuan Province was sequenced. The genome is 16,573 bp in length, consisting of 13 protein-coding genes, 22 transfer RNA (tRNA) genes, two ribosomal RNA (rRNA) genes, and a noncoding control region. Most of the genes are encoded on the heavy strand, except for ND6 and eight tRNAs. The overall base composition of T. bleekeri is 28.1% for A, 28.4% for T, 25.5% for C, 18.0% for G, with a slight A+T bias of 56.5%. The complete mitochondrial genetic variability is high among different Triplophysa species and between the two T. bleekeri individuals from different rivers.

Keywords:

• Genetic variability
• mitogenome
• nemacheilinae
• Triplophysa bleekeri

Acknowledgements

The authors would like to thank Chunlin He for his help in sample collection.

Declaration of interest

The authors report that they have no conflicts of interest. The authors alone are responsible for the content and writing of the paper. The work was supported by the Program for New Century Excellent Talents in University (No. NCET-11-0347).