Comunidade de odonatas de um trecho do Reservatório Sucupira, Rio Uberabinha, Uberlândia, Minas Gerais

Abstract

Dragonflies (Insecta: Odonata) are widely distributed among freshwater ecosystems of tropical and temperate environments and are sensitive to anthropogenic changes. The objective of this study was to inventory the odonate fauna of a section of the Scupira Reservoir on the Rio Uberabinha, Uberlândia, Minas Gerais, Brazil, and to analyze if seasonal patterns influence its diversity. In addition, the studied proposed to describe the Brazilian distribution of the species sampled. Sampling took place during the dry (August-September 2017) and rainy (February-March 2018) seasons, and recorded 860 individuals of 42 species belonging to 26 and six families. Seven new records for the Triângulo Mineiro Region were recorded, representing the families Gomphidae, Libellulidae and Coenagrionidae. Seventeen species were exclusive to the rainy season and seven to the dry season, while 18 species were found in both. The rainy season had greater abundance, with four times as many individuals as the dry season. This study contributes by increasing the number of records for odonate species in the Cerrado of Minas Gerais, and reinforces the trend for a greater predominance of this group during the rainy seasons in this biome.