1. Institute for Fish and Wildlife Health, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty University of Bern, Laenggassstrasse 122, 3012 Bern, Switzerland
2. Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty University of Bern, Laenggassstrasse 122, 3012 Bern, Switzerland