1. Physiology Department, Institute of Biosciences; UNESP; Campus de Botucatu, Rua Professor Dr. Antonio Celso Wagner Zanin, S/N°. CEP 18618-689 Brazil
2. National Center of Research and Conservation of Continental Fishes - CEPTA/ICMBIO; Rodovia SP-201 (Pref. Euberto Nemésio Pereira de Godoy), km 65, Caixa Postal 64 CEP 13630970, Pirassununga Brazil