Volga region

DISTRIBUTION AND CONTACT ZONE OF TWO FORMS OF THE GREEN TOAD FROM THE BUFOTES VIRIDIS COMPLEX (ANURA, AMPHIBIA), DIFFERING IN GENOME SIZE, IN THE VOLGA REGION

Authors: Faizulin A. I., Svinin A. O., Ruchin A. B., Skorinov D. V., Borkin L. J., Rosanov Y. M., Kuzovenko A. E., Litvinchuk S. N.

In the Volga region and adjacent territories, 263 specimens of green toads from 63 localities were studied. Genome size analysis by means of flow DNA cytometry allowed the specimens from 16 localities to be identified as the “western” (= viridis) form and the green toads from 20 localities as the “eastern” form (= variabilis or sitibundus). In the other localities studied, specimens with an intermediate genome size predominated.