Re: Africanized Honey bee northern range limit?
My .02 cents (may be overvalued) is that AHB genetics are already clear up to Canada. Look at the southern breeders as well as the commercial beekeepers who overwinter in Southern states with AHB. When they ship north or bring hive north the genetics from supercedure or inadvertantly mating with AHB drones. A few invariably swarm at their spring destinations and are either captured by local beekeepers or set up shop and possibly swarm the next year. Meanwhile their drones mate with our queens and so on.
I'm not at all bashing commercial beekeepers or Southern Queen breeders. I buy some of those queens and I understand you can't garantee no AHB drone mixed it up with the queens I've bought. I've also captured swarms that were probably from commercial beekeepers. There's no way the proverbial horse was going to stay in the barn to effectively quarentine AHBs. I do pinch the queens from aggressive hives and breed from my hives that have trates I desire though.
Now "pure" AHBs? Last I knew they were holding as far north as mid Oklahoma. It appears their propensity to put their energy into swarming more instead of making higher population colonies and storing more honey makes them less winter hearty in northern climates.
Ninja, is not in the dictionary. Well played Ninja's, well played...