Table 2. Results of dynamic tests and molecular clock analyses for T. japonicus and T. nanhaiensis from the South and East China Seas. Letters indicate variables and abbreviations: n, sample size; nh, haplotype number; h, haplotype diversity; π, nucleotide diversity; SSD = sum of square deviations between the observed and expected mismatch, τ = mutational time scale. *P < 0.05, ** P < 0.001.

Species	Group	n	nh	h	π (%)	Tajima's D	Fu's Fs	SSD/P	τ	Coalescent time (kyr, 2.03% per myr)
T. japonicus	Total	509	239	0.9741	0.55	−2.3359**	−24.4302**	0.0007/0.614	4.344	303.98 (178.86–455.07)
	South China Sea	109	73	0.9849	0.57	−2.1519**	−25.0221**	0.0017/0.541	4.984	265.53 (147.20–398.72)
	East China Sea	400	193	0.9726	0.54	−2.331**	−24.5337**	0.0007/0.659	4.289	299.22 (174–452.60)
T. nanhaiensis	Total	252	74	0.8727	0.23	−2.3928**	−26.3877**	0.0021/0.07	1.930	291.11 (145.76–457.52)