1 Limnology Laboratory, Department of Oceanography and Limnology, Universidade Federal do Rio Grande do NorteRio Grande do Norte, Brazil; Aquatic Ecology Laboratory, Department of Biology, Universidade Federal de Juiz de ForaMinas Gerais, Brazil.
2 Aquatic Ecology Laboratory, Department of Biology, Universidade Federal de Juiz de Fora Minas Gerais, Brazil.