Morphologic, Morphometric, Histologic and Histometric survey of marsh frog (Pelophylax ridibundus Pallas, 1771 (Rana ridibunda)) in Ahvaz (warm region) in comparison with Shahrekord (Cold region)

Amphibians are a group of vertebrate animals that be able to live in both aquatic and terrestrial environments and they are very important in the balance of ecosystems. In this study, we tried to identify Ahvaz and Shahrekord frogs, as well biosystematic survey about them. Hence, in the spring of 2011, 30 male and female frogs in each region were caught using hand nets. The live samples were transported to the laboratory, after identification of frogs, morphological, morphometric, histologic and histometrical measurement were done. Biometric characters survey showed that the average size of male and female frogs in cool region is higher than the warm region (Ahvaz) (p