Diet of juveniles and adults of the Cuban Giant Frog, Eleutherodactylus zeus (Anura: Eleutherodactylidae)

Abstract

Anurans are gape-limited predators and therefore larger individuals are capable of consuming larger prey. Stomach contents of the Cuban Giant Frog, Eleutherodactylus zeus, from caves in the northeastern-most part of the Sierra de Quemados in Viñales National Park, Pinar del Río Province, Cuba, were indicative of ontogenetic changes in diet. Although niche overlap among size classes was relatively high, larger frogs consumed larger but fewer prey items. Predator and prey sizes were positively correlated in both adults and juveniles, whereas predator size and number of prey items per stomach was negatively correlated.