Isolation and characterization of the mitochondrial genome of (Perciformes: Bathydraconidae) with phylogenetic consideration.

is is an Antarctic fish living in the Southern Ocean. Until now, studies on are still limited. As an Antarctic fish, obtaining and characterization of the mitochondrial genome of will be important for elucidation of the mechanism of cold-adapting evolution in mitochondrion. In this study, we first isolated and characterized the mitochondrial genome sequence of with 15,987 bp in length. It contained of 34 genes (12 protein-coding genes, 20 transfer RNA genes, 2 ribosomal RNA genes) and a partial putative control region. Gene organization and nucleotide composition of obtained mito-genome were similar to those of other Antarctic fish. Twenty-eight genes were encoded by heavy strand, while six genes were encoded by light strand. Further, the phylogenetic tree, which based on 12 protein-coding genes, revealed that the was genetically closest to species among 18 species. We hope this work would be helpful for the population genetics and molecular evolution studies.