> I was a bit less than impressed by this study.  Read deep and look at the minimal differences in genetics between the stocks.

I thought that was the point. They wrote:

> although European honey bees exhibit the clear, genetically distinct population structure necessary to create locally adapted stocks (Estoup et al. 1995), U.S. honey bee populations are not comparably structured. U.S. honey bee populations exhibit genetic differences between vastly separated populations of east and west coasts (Delaney et al. 2009), but this has not been demonstrated at a smaller geographic scale, or between Northern and Southern United States.

There is no indication that the US population has adapted at all, genetic differences between populations are small, and more likely indicative of artificial selection rather than adaptive processes. 

PLB

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