i'd rather have bees that have been exposed to varroa and "other parasites"....otherwise in breeding them, you have no way to select for those that can handle such challenges.  imho, better to take some losses up front at the beginning of a breeding program rather than at the tail end when there are many more colonies at stake.

deknow

-- Juanse Barros <[log in to unmask]> wrote:
I would go by importing droone semen and doing AI as the only way to get
sure you are not introducing varroa or other parasites with the stock

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