IN THE 50’S, THE IMPORTATION of European honeybees to America was a frequent practise. However, while beekeeping had good results in the USA, it didn’t seem to work in South America because honeybees from Europe didn’t adapted well to tropical climate. Thus, in 1956, the Brazilian scientist Warwick Kerr suggested to import African honeybees to Brazil instead of the European ones in an effort to increase honey production. Then, the unique main problem he needed to solve was the aggressive nature of this subspecies. The main objective of Dr. Kerr was to obtain a docile variety of bees that was also productive in tropical climates by artificial selection and cross-breeding of the African honey bee (A. m. scutellata) with various European honeybees.
The experimental bees rapidly formed new colonies and began to hybridize with both wild and domestic European honeybees, giving rise to the Africanised honeybees which were more aggressive and less productive than Dr. Kerr expected. These bees are currently located in almost all over the American continent. In the USA, they didn’t spread further north due to their tropical origins, so their range of distribution in North America is limited to the southern states of the USA