-- Chris Slade <[log in to unmask]> wrote:
> Can there have  been more than one importation event?

well, there was also the importation of african drone sperm by the usda directly into the u.s.  ...this did not require a migration from south america.

The Illustrated Encyclopedia of Beekeeping
edited by Roger Morse and Ted Hooper

p230
"it is known that sperm from africanized bees was introduced into the united states and used to inseminate local queens in the late 1960's, without apparent adverse effect, and it is likely that queens were earlier introduced from africa into north america, again without problems.

deknow
 

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