Complete mitochondrial genome and phylogenetic analysis of the barred mudskipper Periophthalmus argentilineatus (Perciformes, Gobiidae).

The complete mitochondrial genome sequence of the barred mudskipper Periophthalmus argentilineatus was first determined in this study. The circle genome was 16 509 bp long and consisted of 13 protein-coding genes, 2 rRNA genes, 22 tRNA genes, and 1 control region. The nucleotide composition of the heavy strand of P. argentilineatus is 28.28% for A, 27.83% for C, 16.01% for T, and 27.88% for G, with a slight G + C bias of 55.71%. Only the NADH dehydrogenase subunit 6 (ND6) and eight tRNA genes were encoded on the light strand, other mitochondrial genes were all encoded on the heavy strand. The mitochondrial gene arrangement of P. argentilineatus is similar to those of most other gobies. The phylogenetic analysis using the neighbor-joining method showed that the kinship between Periophthalmus and Boleophthalmus is closer than those between Periophthalmus and other selected genera. Periophthalmus argentilineatus was clustered into one branch with other four species from the same genus Periophthalmus.