> If so, a drone method selects
>a new mite population with preferring lady bee brood ...
 
What an interesting observation, Rimantas!  And logically correct.
 
I wonder if the technique of "trap and release" where the males are trapped,
sterilized and released to breed would be of any use in controlling varroa.
This is one technique in which resistance is not selected for.  It requires
that males be attracted to a females pheromones.  Can someone post any
information or sources on sex among varroa.  I bet if you put sex and
vampires into a search engine you would get plenty of hits, and not one of
them would be about vampire mites :)
 
Regards, Stan
47N  63W