Strong reproductive barriers in a narrow hybrid zone of West-Mediterranean green toads (Bufo viridis subgroup) with Plio-Pleistocene divergence

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Caroline Colliard, Alessandra Sicilia, Giuseppe F Turrisi, Marco Arculeo, Nicolas Perrin and Matthias Stöck^*

BMC Evolutionary Biology 2010, 10:232 doi:10.1186/1471-2148-10-232