>those few colonies that still might contain Ligustica genes (as yet we 
>cannot eliminate any other race than Ligustica, but as we in UK see this as 
>the most destructive interloper to our natural bees it is very helpful to 
>us).

Dave, I'm curious.  If ligustica is "destructive" in your area, why hasn't 
natural selection weeded it out?

Randy 

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