HARPER, George R; Univ. of North Carolina, Chapel Hill: Gene flow and mimicry: Why are there mimics where there are no models?

Batesian mimicry relies upon predator avoidance of distasteful or dangerous organisms that serve as models for harmless mimics. Yet, the range of Batesian mimics often far exceeds the range of the models. For example, the range of the Scarlet Kingsnake (Lampropeltis triangulum elapsoides) encompasses and far exceeds the range of the Eastern Coral snake (Micrurus fulvius fulvius). Gene flow, either historical or contemporary, is one possible explanation for why a mimetic phenotype exists so far outside the range of the organism that is being mimicked. I analyzed gene flow throughout the range of L. t. elapsoides using phylogenetic, phylogeographic and population genetics methods. The results are presented in this poster.