Abstract

ASTWOOD-ROMERO, JORGE ANTHONY et al. Stomach contents in anurans species from Natural Reserves in the Villavicencio municipality, Meta, Colombia. Caldasia [online]. 2016, vol.38, n.1, pp.165-181. ISSN 0366-5232.  https://doi.org/10.15446/caldasia.v38n1.57836.

We analyzed the contents of 546 stomachs of 24 species of anurans from the foothills of the eastern slopes of the Eastern Cordillera of Colombia. We removed, dissected and preserved each stomach, mass and volume measurements were performed in full and empty. Subsequently, each prey was identified, counted and measured (width and length) to determine its contribution to the stomach volume. We identified 37 food items represented in 2986 individuals or parts of them. The percentage of voidness reached an average of 25, 2±23, 02% of the total studied. The most representative items correspond to the class Insecta (95%), distributed in Hymenoptera (72.9%), Coleoptera (8%), Isoptera (6.2%) and Orthoptera (1.6%). Within the non-insect arthropods the most representative item is in the class Arachnida (4%). The majority of species present values medium and high range of niche, they are generalists in prey consumption.

Keywords : Amphibia; Anura; Trophic Ecology; protected areas; Orinoco Basin.

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