>
> We began in 2017 with one resistant mother to breed from (along with a few
> other hives with low mite counts).
> ...
> This spring, 56 have made the grade so far (after excluding any resistant
> colonies that were not up to par for other reasons), with 25 more to
> alcohol wash as they return from almond pollination.
>
Did all of your current colonies derive queens from that one 2017 resistant
mother?
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