Additional file 7.
Summary of the proposed models and conclusions of the paper. Proposed model with five independent origins of cave adapted Astyanax in NE Mexico as estimated by the data. The first wave of surface fish led to three independent subterranean invasion events establishing the "old" cave populations. The second wave gave rise to two independent invasions establishing "new" cave populations. The arrows signify that the ancestral stock moved into the area from the south but are not meant as specific routes.
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Bradic et al. BMC Evolutionary Biology 2012 12:9 doi:10.1186/1471-2148-12-9