One factor that might make the bees that the breeder/researcher finds to be comparatively mite resistant but the user might not is colony density. Tom Seeley's findings regarding vertical vs horizontal transmission are relevant. Chris *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html