Table 1.

Index of diversity (D) obtained for Y. ruckeri isolates from different geographical areas by the PFGE method with NotI or AscI enzymes and their combination (NotI/AscI)

	Brittany	Adour Garonne	Other regions	All regions
D – NotI	0.64	0.68	0.84	0.82
D – AscI	0.49	0.80	0.63	0.70
D – NotI/AscI	0.75	0.93	0.90	0.93