> Based on the research I been doing on my colonies, the threshold for 
> nosema
> varies colony to colony, or maybe strain to strain.

How much of the variation is in the sampling?  Way back in the 80's when I 
was with the Dept of Primary Industries, one of the things I was hoping to 
look at was the sampling error for nosema within the hive.  Several times I 
had taken samples and out of curiosity I took a second sample.  Back at the 
lab, one would be negative and the other would often be in the millions of 
spores.  It was one thing I would have liked to take further but I left 
before I was able to do the experiment.

Has anyone else looked at this sampling error?

Trevor Weatherhead
AUSTRALIA 

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