Estrutura da comunidade de anuros em área antropizada no município de Dourados, MS

Abstract

Admittedly, degradation and forest fragmentation are considered the greatest threats to biological diversity. It is one of the main causes of the decline of the population of frogs, causing damage in the dispersion of this group, in the population growth of generalist species and consequent replacement of specialist ones. This study aimed to determine the anuran community structure and evaluate its temporal variation in anthropic areas in the Midwest region of Brazil. The study was conducted in an anthropic area in Dourados-MS (22 ° 19 '41.00 "S and 54 ° 43' 53.87" W). The place is charactirized by the damming of headwaters, two lotic stretches and fishponds. Fifteen samples were collected between August 2014 and February 2015, in the evening (about 18:00 hrs to 22: 00hrs). We sampled 1.168 individual anurans, distributed among 17 species, Dendropsophus nanus, Leptodactylus chaquensis and Rhinella schneideri being the most abundant ones. Among the five collected families Hylidae showed greater variety (nine species) and abundance (61%), followed by Leptodactylidae (five species and 28.6%, respectively). There were significant differences in variety and composition of anuran species between the dry and rainy seasons in the study area.