Figure 2. Demographic models tested in MOMI2; bold arrows represent gene flow bouts estimated for each model. Dark grey bar is S. c. corvina, yellow bar is S. c. hicksii, red bar is S. c. hoffmanni, and light grey bar is the ancestor. A) Model using the tree topology and time of divergence obtained from the mitochondrial marker ND2 (Ocampo et al., 2022a) to estimate effective population sizes. B-E) Models including different bouts and pulses of gene flow to test for contemporary gene flow between S. c. corvina and S. c. hoffmanni , and to test for divergence in isolation of S. c. corvina .