Table 1 The results of estimated parameters from the best-supported scenario (s5). NeNorthern, effective population size of Northern population; Nesouthern, effective population size of Southern population; NeCentral, effective population size of Central population; t1, time of secondary contact between Southern and Northern populations (in years); ra, relative genetic contribution from Southern population; t2, time of divergence between Southern and Northern populations; ยต, mutation rate; p, parameter of the geometric distribution.