Diet and trophic niche overlap of four syntopic species of Physalaemus (Anura: Leptodactylidae) in southern Brazil

Despite the current increase in studies on diet of neotropical anurans, few them take a comparative approach between syntopic species. The objective this study was to compare four species genus Physalaemus. collections occurred November 2014 and January 2016 preserved area subtropical Atlantic Forest southern Brazil. We compared gastrointestinal content 109 individuals distributed Physalaemus biligonigerus, P. cuvieri, gracilis henselii. measured Index Relative Importance each prey category calculated trophic niche breadth using Levins’ index (Bsta) overlap Pianka’s (Ojk). also applied compositional analysis evaluate feeding specializations. Formicidae most important for biligonigerus (IRI = 88.5%) 39.1%). For henselii Isopoda 51.7% 57.9%, respectively), followed by 34.9% 24.8%). (IIR 28.6%), Araneae 22.6%). narrow, all smaller than 0.32, lowest recorded (0.04). higher cuvieri (96%), (95%). Only presented significant level specialization. differences their diets suggest different uses resources, which could relate ways exploring microhabitat.