No abstract

We determined the complete mitochondrial genome sequence of Squalidus chankanensis tsuchigae (Cypriniformes: Cyprinidae). It is 16,603 bp long, with 13 protein-coding genes, 22 transfer RNAs, 2 ribosomal RNA genes, and 1 control region, which is 927 bp long, located between tRNApro and tRNAphe. The overall base composition is as follows: 29.98% A, 16.86% G, 25.44% T, and 27.72% C, with a slight AT bias. These results provide necessary data for phylogenetic studies on Squalidus species.

This study reports the complete mitochondrial genome of Squalidus multimaculatus. The length of the mitochondrial genome of S. multimaculatus is 16,597 bp, including 13 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes, and one control region. The overall base composition of A, G, T, and C is 28%, 18.8%, 25%, and 28.2%, respectively. A phylogenetic analysis by the neighbour-joining method showed a close relationship between S. multimaculatus and S. japonicus coreanus. We believe these results will provide essential data for phylogeographic studies of the genus Squalidus.