Fig. 2

Gene map of the M. nipponense mitogenome (A) and the statistic of relative synonymous codon usage (RSCU) in the mitogenome of M. nipponense (B). Three types of genes are represented in different colors: 13 protein-coding genes (purple, yellow, green, and light pink), rRNA genes (red), tRNA genes (blue). trnS1, trnS2, trnL1, and trnL2 denote codons tRNA-Ser (AGN), tRNA-Ser (UCN), tRNA-Leu (CUN), and tRNA-Leu (UUR), respectively. CR = control region