Feeding Biology of the Marsh Frog, Rana ridibunda Pallas 1771, (Anura, Seasonal variation in the diet of Hyla arborea 491 Ranidae) in Turkey’s Lake

Abstract. We examined the food composition of the marsh frog, Rana ridibunda, populations inhabiting Turkey’s Lake District. Stomach contents of 82 (32 ♂♂, 50 ♀♀) adult individuals were investigated. It was found that the species mainly fed on invertebrates and especially on terrestrial preys belonging to arthropod groups (75.17%). The most frequently consumed preys with respect to numeric proportion were Diptera (19.85%), Coleoptera (12.72%) and Hymenoptera (10.02%). There are no differences in diet between sexes and among the populations examined