>
> >What I am wondering how MITE immigration is confirmed or disproved.


By eliminating all mites from hives with an effective chemical (studies
typically used fluvalinate or coumaphos when they were still effective) and
maintaining continuous treatment.  Then monitor daily sticky board drops,
which would indicate the number of mites entering the hives via drift of
bees or return of foragers that picked them up somewhere.


-- 
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com

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