Members of the cited research team have published variations on the 
same theme for at least a decade or more.  A corollary to their views 
is that only natural selection will yield anything useful in terms of 
resistance to varroa.  And hence their emphasis on survival as the most 
important metric.

This negative view seems to confound two different questions into one.  
By answering one question as a no, they imply the other question is 
also a no.

Question 1 - Can honey bees be selected to be highly resistant to 
varroa mites and can it be done in a short time?  Say, less than a half 
dozen generations?  The answer to this question is yes.  Has been done 
a good number of times and places.

Question 2 - Can this selected material be thrown out into the real 
world of beekeeping and persistence of the traits be expected?  The 
answer to the question is no, for obvious reasons.  Expecting a 
different outcome is unrealistic.

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