1. Observatoire pour la Conservation et l'Etude des Animaux et Milieux Marins (OCEAMM); 51 Rue du Général de Gaulle F-59123 Zuydcoote France
2. Marine Sciences Program; Department of Biological Sciences; Florida International University; 3000 NE 151st Street North Miami Florida 33181 U.S.A.
3. Department of Veterinary Pathology, Sart Tilman; University of Liège; B-4000 Belgium