Fig. 4
Estimates of the historical effective population size (Ne) obtained by the software GONE for a population subdivided into ten subpopulations. The n = 10 subpopulations of size N = 500 individuals each, have continuous reciprocal migration between each other (island model) at a migration rate m per generation (a Nm = 0.05 = 1 migrant each 20 generations, b Nm = 0.2 = 1 migrant each 5 generations, c Nm = 0.5 = 1 migrant each 2 generations, d Nm = 1 migrant each generation, e Nm = 2 migrants each generation, f Nm = 20 migrants each generation). The two black dotted lines show the expected NeVk of one subpopulation (lower line) or all of them together (upper line). The red lines correspond to estimates obtained from 100 individuals sampled at generation zero from the ten subpopulations (10 individuals from each subpopulation), whereas the blue lines correspond to estimates obtained from 100 individuals sampled from a single subpopulation