Interestingly, European bees hybridized with African bees seem to be quite resistant to CCD. Makes me wonder if one of the problems afflicting American honeybees is a lack of genetic diversity.
Well there are other factors in this debate. European-African hybrids are much more aggressive to the beekeeper and there are different conditions that kills the colony. Another factor is the honey production rates for these hybrids.
There are many different species of bees in use, with different characteristic in areas of amount of honey produced, aggression, tendency to get different forms of illness and so forth.
