Check out Randy olivers site on sampleing. He has done a ton of work on it, and at this point nothing else I can add.
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From: Mark Berninghausen <[log in to unmask]>
To: [log in to unmask]
Sent: Tuesday, February 18, 2014 6:43 AM
Subject: [BEE-L] What do mite samples really indicate?
Can anyone accurately say what a mite count from a 300 bee sample really says? If one got 2 mites in a 300 bee sample, how many mites are there in a 30,000 bee colony? I always figure that sampling for varroa mites simply indicates presence w/ some indication of intensity. But, can anyone accurately predict what the results indicate?
Has anyone done a study where multiple samples were taken from the same colony at the same time or one consecutive days? Has anyone ever sampled all the adult bees in a colony to see how many adult mites are present?
Is there a consensus on which sampling technique is best? Ether roll? Powdered sugar shake? Alcohol wash? Other?
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