>Also, has anyone tried Minesota Hygienic queens inseminated with VSH/SMR 
>semen?
Hi Waldemar, I wrote about this cross in my article on breeding in ABJ.  I 
doubt that any cross will work well every time, but this cross *can* result 
in a completely mite-resistant bee that is an incredible honey producer. 
These traits are heritable, but not 100%.
Randy Oliver 

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