8 daughter colonies of the 4a were tested:
CH-50-5-122-2009 CH-50-5-124-2009 CH-50-5-125-2009 CH-50-5-171-2009 CH-50-5-172-2009 CH-50-5-192-2009 CH-50-5-197-2009 CH-50-5-280-2008
28 tested queens were mated at the mating station:
CH-50-5-50-2009 CH-50-5-51-2009 CH-50-5-52-2009 CH-50-5-55-2009 CH-50-5-57-2009 CH-50-5-60-2009 CH-50-5-61-2009 CH-50-5-62-2009 CH-50-5-122-2009 CH-50-5-124-2009 CH-50-5-125-2009 CH-50-5-134-2009 CH-50-5-136-2009 CH-50-5-138-2009 CH-50-5-143-2009 CH-50-5-144-2009 CH-50-5-149-2009 CH-50-5-155-2009 CH-50-5-171-2009 CH-50-5-172-2009 CH-50-5-192-2009 CH-50-5-197-2009 CH-50-5-504-2009 CH-50-5-550-2009 CH-50-5-601-2009 CH-50-5-603-2009 CH-50-5-605-2009 CH-50-5-615-2009
20 daughter colonies of queens mated at the mating station were tested:
CH-50-52-50835-2011 CH-50-52-50836-2011 CH-50-52-50859-2011 CH-50-62-50431-2010 CH-50-66-50090-2010 CH-50-66-50095-2010 CH-50-66-50100-2010 CH-50-66-50105-2010 CH-50-66-50106-2010 CH-50-66-50108-2010 CH-50-66-50112-2010 CH-50-66-50113-2010 CH-50-66-50116-2010 CH-50-66-50123-2010 CH-50-86-50178-2011 CH-50-86-50753-2011 CH-50-86-50756-2011 CH-50-86-50757-2011 CH-50-86-50780-2011 CH-50-86-50791-2011