Comparative mitochondrial genome analysis of the Mongolian redfin, (Xenocyprididae) from China reveals heteroplasmy.

This study determined the mitochondrial genome (mitogenome) of from China's Qiantang River and analyzed its phylogenetic history in the Subfamily Cultrinae. Next-generation sequencing was used to obtain the mitogenome of , GenBank Accession Number MZ032228. The mitochondrial genome length of from China's Qiantang River is 16,622 bp. The genome contains 13 protein-coding genes, 22 transfer RNAs, two ribosomal RNAs, and two central noncoding regions (the control region and the origin of light strand replication). Based on BLAST comparisons, the sequence identity of MZ032228 from China's Qiantang River was 99.84% to that of MG783573 from China's Nei River, 99.75% to AP009060 from Russia's Black River. The phylogenetic analysis is consistent with BLAST comparisons in confirming that MG783573 and MZ032228 show a high genetic similarity. This study also confirms mitochondrial DNA heteroplasmy in for the first time and documents 35 heterogeneous loci that were detected.