Color Pattern Polymorphism in the Lake Erie Water Snake, Nerodia Sipedon Insularum.

  • Richard B. King
  • Published 1987 in
    Evolution; international journal of organic…


Populations of the water snake, Nerodia sipedon, on islands in western Lake Erie are polymorphic for color pattern. These populations include banded, intermediate, and unbanded morphs while surrounding mainland populations consist solely of the banded morph. The hypothesis that this polymorphism is maintained by strong selection and migration pressures is… (More)
DOI: 10.1111/j.1558-5646.1987.tb05794.x


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