Characterization of the complete mitochondrial genome of Silurus soldatovi in Korean river.

The complete mitochondrial genome of Silurus soldatovi firstly collected from a native Korean river was determined by the bioinformatics assembly of the next-generation sequencing (NGS) reads. The circular mitogenome was 16,525 bp in length which harbored canonical 13 protein-coding genes, 22 tRNAs, and 2 rRNAs, which was identical to those of family Siluridae. Twenty-eight genes were located on H strand, whereas the remaining nine genes were on L strand. Except for COX1 gene (GTG), other 12 protein-coding genes were predicted typical start codons (ATG). Among the currently known mitogenome sequences, S. soldatovi showed highest identity (99.38%) to the Chinese haplotype of S. soldatovi (NC022723) followed by the Chinese haplotype of Silurus asotus (JX087351). Interestingly, intraspecies variations of S. asotus are higher than those of interspecies and further study should be made to elucidate the evolutional relationship between two Silurus species.