This is some hard proof of what many dismissed as anecdotal. So, in addition to drift and the robbing of collapsing colonies, we have this mechanism for re-infestation of otherwise "well-managed" colonies. Even more reason to continue to make outreach efforts to the nuisance beekeepers among one's neighbors to de-program the varroa deniers, and educate people past the cult beliefs about "One Weird Trick" that will keep their colonies safe from varroa. http://dx.doi.org/10.1371/journal.pone.0167798 *********************************************** 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