Data from: Complex histories of repeated gene flow in Cameroon crater lake cichlids cast doubt on one of the clearest examples of sympatric speciation

Christopher Herbert Martin, Joseph S. Cutler, John P. Friel, Cyrille T. Dening, Graham Coop & Peter C. Wainwright
One of the most celebrated examples of sympatric speciation in nature are monophyletic radiations of cichlid fishes endemic to Cameroon crater lakes. However, phylogenetic inference of monophyly may not detect complex colonization histories involving some allopatric isolation, such as double invasions obscured by genome-wide gene flow. Population genomic approaches are better suited to test hypotheses of sympatric speciation in these cases. Here we use comprehensive sampling from all four sympatric crater lake cichlid radiations in...
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