1. Department of Ecology and Diseases of Zoo Animals, Game, Fish and Bees Faculty of Veterinary Hygiene and Ecology University of Veterinary and Pharmaceutical Sciences Brno Brno Czech Republic
2. Department of Zoology, Fisheries, Hydrobiology and Apiculture Mendel University in Brno Brno Czech Republic
3. Department of Infectious Diseases and Preventive Medicine Veterinary Research Institute Brno Czech Republic
4. Institute of Vertebrate Biology Czech Academy of Sciences Brno Czech Republic
5. Department of Pathobiology Centre for Fish and Wildlife Health University of Bern Bern Switzerland