Fig. 4From: Base-substitution mutation rate across the nuclear genome of Alpheus snapping shrimp and the timing of isolation by the Isthmus of PanamaEstimates of divergence times (τ) for three transisthmian Alpheus species pairs (A. wonkimi/ A. malleator (WM), A. estuariensis/ A. colombiensis (EC), A. panamensis/ A. formosus (PF)) across datasets, scaled by the substitution rate (µ). Error bars indicate 95% Bayesian credible intervals across all replicate runs. A Datasets that varied in species composition and the minimum number of individuals (m) or species (s) recovered at a locus, modeled with a constant mutation rate across loci and no migration. Parameter values for each dataset are listed in Additional file 1: Table 1. a and b triplet datasets include the focal species pair plus one outgroup species. B The Am4s2r dataset, modeled with either constant μ across loci and no migration (Regular), variable μ across loci (VarMut), or variable μ and migration allowed between A. panemensis/A. formosus (PFmigVarMut)Back to article page