Table 1. Mitochondrial genome sequences characteristic of five-level ploidy M. anguillicaudatus.

		Base composition in H strand
Ploidy level	Size	A%	T%	C%	G%	(A+T)%
Diploid	16644 bp	29.79	28.35	25.56	16.30	58.14
Triploid	16646 bp	29.70	28.27	25.65	16.38	57.97
Tetraploid	16645 bp	29.60	28.26	25.81	16.53	57.86
Pentaploid	16643 bp	29.68	28.26	25.66	16.40	57.94
Hexaploid	16643 bp	29.66	28.24	25.68	16.42	57.90