| 1996 - | Deutsche Gesellschaft für Parasitologie Member |
| 1996 - | Amerikanische Gesellschaft für Fischerei Member |
| 1990 - | Deutsche Gesellschaft für Zoologie Member |
| 1988 - | Europäische Gesellschaft für Fischpathologie Member |
| 2002 - | Deutsche Forschungsgemeinschaft - Germany |
| 2007 | Myxozoa Workshop at the nternational Symposium on Fish
Parasites, Viterbo, Italy, Sept.
Member of organizing committee |
| 1995 | International Congress of Ichthyoparasitology, Munich, Germany
Organizer |