>But why? This is a great correlation is not causation. It might be
resistance but it could as well be that Varroa treatments also take care of
tracheal.
I started keeping bees in 1981 and at that time it seemed that there was a problem - not huge - with acarine. However, that problem had disappeared well before varroa arrived in 1997.
Best wishes
Peter
52°14'44.44"N, 1°50'35"W
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