1. Post-Graduate Program in Ecology (PPG-ECO), CB, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil;
2. Department of Oceanography and Limnology, CB, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil;
3. Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil;
4. Department of Systematic and Ecology, Federal University of Paraíba, João Pessoa, Paraíba, Brazil