Bees infected by viruses have been shown to have poorer homing ability
(Kralj, Li), so could increase the amount of drift.
Re robbing, if memory serves, somewhere I read that Russians tended to rob
to a lesser degree than Italians. But might be difficult to select for.
There are other traits that can be selected for, which I will summarize in
an upcoming article.
--
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com
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