well those kinds of details I am not really familiar with InTheSwamp. This past year I have learned more about drone semen than I ever though I would but the details of sperm viability and mobility between the various races is NOT KNOWN by me. < they now have some quite 'out there' technology for looking at these factors and the variation in drone semen viability and mobility is quite remarkable.... there is a quite obviously a nutritional element to both..... this may to some degree answer the question as to why there is so much reporting of early queen superscedure.
adaptation takes much much longer than some folks seem to think. this should not be confused with an 'open niche' where some introduced species spreads over a inviting landscape with little or no resistance from competition or predation. However.... even 30+ years ago Steve Tabor reported that the defensive behavior of know african hives could be influenced by location and most especially humidity and elevation.
as far the africanized bees movement northward has been thru an area where hive management is almost totally lacking. therefore almost no one has selected for hives with milder disposition nor culled the one that are just plain mean. on this side of the border in most states knowingly keeping such bees is illegal. the end results is the same on both sides of the fence.
