>The results of bioassay and colony evaluations demonstrated that British and Texas Buckfast honey bee stocks had one-third to one-half the mean prevalence and abundance of tracheal mites as Canadian standard stock, indicating that Buckfast stocks are less susceptible to tracheal mites than Canadian standard stock. Problems with Acarine seem to be limited to the US and Canada these days as far as I can see; I know of no-one here who even checks for it any longer - it is just not a problem. So while this study might suggest that there is something special about the Buckfast bee, I suspect that most of the races in Europe would have given the same result. Why do you have this problem? Best wishes Peter 52°14'44.44"N, 1°50'35"W *********************************************** 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