Table S3

Model selection with AIC criteria of alternative demographic models estimated with IMa2. Models are nested within the full migration model and are ranked based on AIC values. Best model is bolded. AIC = Akaike information criterion, k = number of parameters, Δi = AIC - AICmin, ωi = model probability. Subscripts of M (migration) parameters represent the directionality of gene flow between populations going backwards in time: 0 = L. darwinii-N, 1= L. darwinii-S, 2 = L. laurenti, and 3 = L. grosseorum. Parameters values constrained in nested models are enclosed in squared brackets