Nosema Control: National Management Survey 2011-2012

Nosema spores

A fungal disease of the honey bee gut known as nosema disease is caused by the microsporida Nosema apis and Nosema ceranae. The only product currently registered in the US to control this disease is Fumagillin. Survey respondents were asked if they used Fumagillin or Nosevet at least once, to a majority of their colonies, between April 2011 and March 2012. Fumagillin was used by 948 respondents while 2,661 did not report using the product. There was no significant difference in loss between groups. Nosevet use was reported by 79 respondents while 3,530 respondents did not indicate using the product. There was no significant difference in loss between groups.

When comparing Fumagillin use by region, low response rate among multiregional operations makes comparisons in this group difficult to interpret. Also possibly influencing the results is that we do not know if the responding beekeepers applied this product according to label directions. It is likely that some of those who reported using this product did so using concentrations and delivery methods that differed from the label directions. This may affect the results reported here. More detailed questions regarding doses and application methods are planned for future surveys.


This information is for educational purposes only. References to commercial products or trade names do not imply endorsement by the Bee Informed Partnership or its members. The results presented here are the summary of the population who responded. The sample may not be representative of the beekeeping population at large. These results simply highlight differences in the sample population. The results cannot be considered conclusive, causative, protective, or attest to product efficacy or lack of efficacy


Management Survey 2011 – 2012

How average losses were calculated and presented  |  Watch a vlog here

Appendix Items

Download the complete reports in the list below

Nosema control 

All survey reports listed here: Bee Informed National Management Survey 2011-2012

Written By: The Bee Informed Team

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The Bee Informed Partnership is a collaboration of efforts across the country from some of the leading research labs and universities in agriculture and science to better understand honey bee declines in the United States. Supported by the United States Department of Agriculture and the National Institute of Food and Agriculture, we’re working with beekeepers to better understand how we can keep healthier bees. The key to our success is the true partnership we maintain across a wide range of disciplines including traditional honey bee science, economics, statistics, and medical research that makes all these tools available to this important research. And just as important as the tools are the people. We not only have the leading researchers in the honey bee industry, we also have advisory boards from the commercial beekeeping industries, almond and other commercial growers, as well as naturalists and conservationists from across the country.