3.6 Recent demographic history
The results of SMC++ analysis revealed a difference in recent demographic history between invasive and native populations (Figure 7). Among all diploid populations, only the invasive population (LL) experienced a recent decline in effective population size reflecting founder events, while all native populations experienced a recent expansion during the same time period. For more ancient time periods, the population trajectories were almost similar across all populations, suggesting an expansion since about 150 ka followed by a peak at about 60 ka and a subsequent decline, assuming mutation rate of 1e-8 and generation length of one year.