Table 2. Parameter estimates for the best fitting models computed in fastSIMCOAL2 . Estimates based on site frequency spectrum data are shown for the Red Sea and PAG models represented in Figure 4. The abbreviations ‘anc. Pop.’ and ‘MIG’ stand for ancestral population and migration rate, respectively. Effective population sizes are expressed in number of individuals and times of divergence are expressed in years, assuming a generation time of 25 years. Migration rates are expressed in number of migrants per generation.