Data from: Hybridization between two gartersnake species (Thamnophis) of conservation concern: A threat or an important natural interaction?

John S. Placyk, Benjamin M. Fitzpatrick, Gary S. Casper, Randall L. Small, R. Graham Reynolds, Daniel W. A. Noble, Ronald J. Brooks & Gordon M. Burghardt
Distinguishing between hybrid zones formed by secondary contact versus parapatric divergence-with-gene-flow is an important challenge for understanding the interplay of geographic isolation and local adaptation in the origin of species. Similarly, distinguishing between natural hybrid zones and those that formed as a consequence of recent human activities has important conservation implications. Recent work has demonstrated the existence of a narrow hybrid zone between the plains gartersnake (Thamnophis radix) and Butler’s gartersnake (T. butleri) in the...
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