Authors contribution
S.M. and P.L. conceived the project. S.P. provided reagents and samples. S.M. and P.L analysed the data and wrote the manuscript with input from S.P.
Table 1. Summary statistics and ABC estimation. Number of loci and SNPs after filtering, mean pairwise difference (θπ), Watterson theta (θw), Tajima’s D (TD), posterior probability of the most supported model and its parameters (median value and 95% credible interval in parentheses).