> 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 ****************************************************** * Full guidelines for BEE-L posting are at: * * http://www.honeybeeworld.com/bee-l/guidelines.htm * ******************************************************