Levantamento da fauna de crustáceos decápodes na região do Triângulo Mineiro e Alto Paranaíba

Abstract

In Brazil there are eight families of freshwater decapods, including the families, Trichodactylidae e Palaemonidae. Both have representatives in the Triângulo Mineiro/Alto Paranaíba area, but there are no systematic studies on freshwater decapods in this region. In the present study, a survey of freshwater decapods was carried out in the region. To this end, collections were made from July to November 2021 in different aquatic environments, including medium and large rivers, strems and dams. Information on decapod occurrence records was also obtained from the literature, from collections made by the team of “Laboratório de Ecologia de Ecossistemas Aquáticos” of the “Instituto de Biologia” of the “Universidade Federal de Uberlândia” and using the GBIF database. Individuals were collected using hands nets and traps. Five decapod species were recorded, of which four belong to the Palaemonidae family (Macrobrachium amazonicum, Macrobrachium Brasiliense, Macrobrachium jelskii, Macrobrachium pantanalense) and one species belongs to the Trichodactylidae family (Dilocarcinus pagei). There is controversy over the origin of most of these species, mostly because the first appearance in the region is recent, mainly on the specie from the Trichodactylidae family. Recent records of Macrobrachium pantanalense in the region indicate misidentification of the specimens so called Macrobrachium amazonicum, because of the similarity of these two species.