Examination of 16 demographic models for the Aegla neuquensis data using IMa [66].

Population q1 and q2 refer to the Negro and Chubut river systems respectively, whereas qa is the ancestral population for the given model. Migration estimates are for gene flow from Negro into the Chubut system (m1) whereas m2 is the reverse direction. Gene flow estimates of 0.001 are effectively zero. Values for t and the five demographic parameters are the high points of the posterior distribution. Five models (in bold) could not be rejected at α = 0.05 or using a Bonferroni corrected α = 0.003125. Time of divergence (t) is not included in the model selection.