Using cordovan queens and drones, Rick Hellmich and Gordon 
Waller showed that the Weavers were controlling matings of queens with 
their drones to a high degree in the late 80s.  The findings predicted 
some influence of AHB once they arrived.  This matches fairly well what 
Danny Weaver describes.

https://www.ars.usda.gov/ARSUserFiles/60500500/PDFFiles/201-300/237-Hellmich--Preparing%20for%20Africanized%20Honey.pdf


 

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