This is an interesting line of discussion. See the discussions at 
http://en.wikipedia.org/wiki/Apis_mellifera_mellifera and 
http://en.wikipedia.org/wiki/Africanized_bee on both bees. In the tropics, 
it appears that Apis mellifera mellifera, probably the first honey bee 
introduced to the Americas, will persist at higher elevations, whereas at 
lower altitudes where it's  hotter, the Africanized honey bee 
prevails.  Both of these bees are pretty defensive, however, the reason 
that AMM was replaced by the Italian race Apis mellifera ligustica in most 
of North America http://en.wikipedia.org/wiki/Italian_bee.  See my articles 
on AHB archived at http://www.squidoo.com/American_Bee_Journal/.

Malcolm T. Sanford
Professor Emeritus, University of Florida
http://www.squidoo.com/apis/

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