Midwest Partners in Amphibian and Reptile Conservation

Midwest PARC Photographs

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An overproduction of melanin produces this black Eastern Garter Snake (Thamnophis sirtalis sirtalis). While this mutation can occur anywhere, in the western basin of Lake Erie, melanistic individuals may make up 50% of the population.

An overproduction of melanin produces this black Eastern Garter Snake (Thamnophis sirtalis sirtalis). While this mutation can occur anywhere, in the western basin of Lake Erie, melanistic individuals may make up 50% of the population.