Diet composition and prey selection of Telmatobius macrostomus, the Junín giant frog

Endangered species research

Andrew S. Watson^1¹  Austin L. Fitzgerald^1² 

[1] Peace Corps Community-Based Environmental Management Program, Surco, Lima, Peru^1;Servicio Nacional de Áreas Naturales Protegidas por el Estado del Perú, Reserva Nacional de Junín, Junín, Peru^2

关键词: Junín giant frog;    Telmatobius macrostomus;    Diet composition;    Prey availability;    Prey selection;    Wildlife conservation;   

DOI  :  10.3354/esr00785

学科分类：动物科学

来源: Inter-Research

【 摘 要 】

This study describes the diet composition and prey selection of the Endangered Junín giant frog Telmatobius macrostomus, endemic to the central Andes of Peru. Prey items were recovered by forced regurgitation of stomach contents through gastric lavage. Top prey taxa in all samples (n = 9) consisted of a snail (Mollusca: Gastropoda: Hygrophila: Physidae; 78% frequency of occurrence) and an amphipod (Arthropoda: Malacostraca: Amphipoda: Hyalellidae; 56% frequency of occurrence). T. macrostomus appeared to select snails (family Physidae) and mayflies (family Baetidae) from the available prey in the environment. No vertebrate species were found in the stomach contents. Only 9 adults were found during this study (survey effort = 8.9 person-hours per frog), suggesting that adults of this species are rare and/or difficult to find. Although our sample size is limited, and the results need to be interpreted with caution, these findings provide important basic ecological data that can prove useful in the conservation of this species.

【 授权许可】

Unknown