Within a species distinct populations also exhibit genetic variability. M. lutreola conservation Population structure and gene flow can be influenced by habitat distribution. Agile frogs Rana dalmatina gathered in spawning ponds from March to the beginning of April and chorused over a two week time. During breeding time, males often predominated in populations but were intensively preyed upon by predators especially Polecats . Rana dalmatina Otter survey Agile frogs are terrestrial Anuran inhabiting natural meadows and woods while water frogs live an aquatic life.
Water frogs breed later but only few frogs change from a pond to another.
These reduced population exchanges may result in differentiation among frog populations . Our models are the different fascinating water frog complexes. The water frog complex in western Europe included several species and numerous hybrids resulting from hemiclonal hybridogenetic gametogenesis. Distribution and habitat use of water frog hybrid complexes in France. Global Ecol and Biogeography .