Hendry Vineyard stickleback : testing for contemporary lake – stream divergence

Background: Threespine stickleback (Gasterosteus aculeatus) show patterns of trait divergence between habitats that are repeated across many watersheds. For example, stream stickleback generally have deeper bodies than do lake stickleback. Parallel divergence of this sort is often used to infer the power and predictability of natural selection, but how… CONTINUE READING