> I don't want to sound combative, but do you have any citation or publication to back that up?
Worse than a citiation,  experince,  and a darn lot of it. ... The problem gets to be for me when you have 800 hives

> Style of beekeeping may also play an important role in determining beetle impact in introduced regions. For example, commercial beekeepers in the United States effectively farm ‘monocultures’ of bees where tens-of-thousands of hives may be present in an area. Monocultures remain extremely susceptible to invasion and devastation by new pests. ‘Beekeeping-by-the-thousands’ rarely occurs in Europe, the Middle East, and Asia so bee monocultures are not as common.

An ecological digest of the small hive beetle (Aethina tumida), a symbiont in honey bee colonies (Apis mellifera) 
J. D. Ellis and H. R. Hepburn. Insectes Sociaux DOI 10.1007/s00040-005-0851-8

             ***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software.  For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html