The complete mitochondrial genome of Onychostoma barbatum of Youjiang River.
Onychostoma barbatum is an endemic species to China. In the present study, the complete mitochondrial genome of O. barbatum in Youjiang River was cloned and analyzed. The complete mitochondrial genome is 16 589 bp in length, with the base composition: A - 31.5%, T - 24.5%, C - 28.1%, and G - 15.9%. It had the typical vertebrate mitochondrial gene arrangement, including 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes and a D-loop region. The diversity of sequences and the phylogenetic tree approve that it has high similarity with that in Guijiang River. The mitochondrial genome would contribute to protection of the germplasm resources of O. barbatum and studying its population structure and dynamics in the future.