Estimates of parameters from IM analysis of sympatric and allopatric comparisons.

θ, the estimated population mutation rates; t, the estimated number of mutations since the time of splitting; m, the estimated migration rates; N, the estimated effective population sizes; t, the estimated time in years at which the ancestral population split into the sampled populations; 2Nm, the estimated effective number of migrant gene copies per generation in each direction. The 90% lowest and highest posterior density intervals for each parameter are shown in brackets. S1S, Sobral 1S; S2S, Sobral 2S; Pan, Pancas; Lap, Lapinha; A, ancestral species.