Fig 3. Subtree of the hybridogenetic Pelophylax species complex.
DNA barcodes do not clearly resolve the two parental (P. lessonae, P. ridibundus) and the hybrid (P. kl. esculentus) species but provide evidence for a genetic signature of the Italian water frog (P. bergeri) in one Austrian water frog sample (marked with *). Light gray labels represent samples processed in this study.