A few things: a) African honey bees aren't domesticated populations, challenging your overall point. b) A 3 mile separation is not substantial (though I grant

A few things: a) African honey bees aren't domesticated populations, challenging your overall point. b) A 3 mile separation is not substantial (though I grant you that if most of the bees in any given cluster are introduced, then it might lead to more homogeneity). c) even within "wild" populations of whatever, you see local clusters of genetic similarity. It's been a while since I took population genetics, but IIRC this kind of local equilibrium was well-covered. Also, I haven't read the paper, but the abstract sure sounds like what I'm describing -- a sudden population bottleneck leads to rapid evolutionary adaptation in wild populations: "These findings suggest that genetically diverse honey bee populations can recover from introduced diseases by evolving rapid tolerance, while maintaining much of the standing genetic variation."