Past demographic changes in G. bravoana wild populations inferred using a Bayesian coalescent approach. Marginal posterior density of A) present (N
) and past (N
) effective population size represented on a log10 scale. The colors of posterior densities represent three different assumed generation times in years for the prior set analyzed, which is represented by a gray dotted line. B) Posterior distribution represented on a log10 scale of the time (in years) since the G. bravoana population decline (Xa), calculated using MSVAR v1.3, for the four prior sets analyzed. The colors of posterior densities represent the three different assumed generation times in years for the four prior sets analyzed, which are represented by gray dotted lines. The black vertical dashed line represents the four time periods tested (from left to right): 100; 500; 2,500 and 10,000 years (Y).