Fig. 5

A graphical summary showing the results of three MIGRATE-n gene flow analyses. Each analysis includes three sample localities represented by green squares (Analysis 1), yellow squares (Analysis 2), and brown squares (Analysis 3). Pairwise gene flow estimates (M) are provided between each locality (M = effective migrants per generation scaled by mutation rate). Localities containing direct hydrologic connection within the same drainage basin are connected by solid lines with the direction of river flow indicated by half arrows, while localities in adjacent drainage basins are connected by dotted lines. Arrows indicate direction of gene flow for each estimate. An inset of Fig. 3 is provided in the upper right corner with the geographic area of the present figure outlined in red