COMPOSIÇÃO DE ANFÍBIOS ANUROS (ANURA) EM UMA MATA DE GALERIA, EM LADÁRIO, MATO GROSSO DO SUL

Abstract

Brazil is the country with the greatest anuran amphibian diversity. However, species records in some phytophysiognomies of Mato Grosso do Sul remain scarce. In this context, the aim of this study was to obtain information on the composition of anurans in a gallery forest remnant and its surroundings, located in the municipality of Ladário. All anurans were detected using the visual encounter survey method along four transects (two in non-flooded gallery forests, one in a pasture area surrounding the forest, and another in a clearing within the forest). Species records were obtained through photographic documentation. Field activities were conducted between December 2019 and July 2020, from 5:00 to 10:00 a.m. and 5:00 to 9:00 p.m.

A total of 14 species, distributed across 9 genera and 5 families, were recorded: Bufonidae (2), Dendrobatidae (1), Hylidae (5), Leptodactylidae (5), and Microhylidae (1), representing approximately 41% of the known species for the municipality. The study also documented the following new records: Adenomera diptyx, Dendropsophus minutus, Elachistocleis corumbaensis, Leptodactylus elenae, L. labirinthycus, Physalaemus albonotatus, Rhinella bergi, Scinax fuscovarius, and S. nasicus.

Most species were found in the gallery forest, highlighting the importance of conserving this habitat. Ameerega picta used five different substrate types as calling sites. Regarding reproductive modes, nests of two species were observed. P. albonotatus laid its eggs in foam nests within water puddles, whereas A. picta deposited its eggs on Attalea phalerata (acuri) and Philodendron sp. leaves. After hatching, the larvae were transported to aquatic habitats on the backs of their parents.