1. Laboratory of Fish Bacteriology Department of Preventive Veterinary Medicine State University of Londrina Londrina Brazil
2. Phibro Animal Health Guarulhos Brazil
3. Laboratory of Electron Microscopy and Microanalysis Department of General Biology State University of Londrina Londrina Brazil
4. Laboratory of Clinical Pathology Department of Preventive Veterinary Medicine State University of Londrina Londrina Brazil
5. Laboratory of Animal Pathology Department of Preventive Veterinary Medicine State University of Londrina Londrina Brazil