Figure 4.

Lower limit of the migration rate range (m_min) necessary to maintain genetic homogeneity as a function of the mean mutation rate of microsatellite repeat regions (μ_R) for values of Θ (i.e. 4N_eμ_R) estimated using DIYABC in C. terminifera populations (black) or studied in Waples & Gaggiotti's [15] simulations (grey). We considered that power to detect two panmictic populations was poor (i.e. chance to observe genetic homogeneity was high) when the populations exchange more than 50 migrants. See text for more details. Diamonds represent the three germline estimates of dinucleotide microsatellite mutation rate in insects [38–40].