Abstract
1 Laboratory of Microbiology, Graduate School of Fisheries Sciences, Hokkaido University, 3-1-1 Minato-cho, Hakodate 041, Japan
2 Laboratory of Microbiology, University of Ghent, Ledeganckstraat 35, B-9000 Ghent, Belgium
3 CSIRO Livestock Industries, Australian Animal Health Laboratory, 5 Portarlington Road, Private Mail Bag 24, Geelong, Victoria 3220, Australia
4 Centre National de la Recherche Scientifique and Université de Nice Sophia-Antipolis, Laboratoire Jean Maetz, Villefranche-sur-Mer F06230, France