BCBC would like to thank
Dr. Zachary Huang, Associate Professor of Entomology, Michigan State University for allowing us to republish his honeybee photos and photo descriptions here. Please visit his site at Beetography.com
Special thanks also to
Dr. David Tarpy, Assistant Professor of Entomology at NCSU for allowing us to republish information on bee pests and treatments. You can visit his site here. |
Cause(s):
The protozoan, Nosema apis.
Symptoms:
--- There is no single symptom of the disease.
--- Adults may have distended abdomens and defecate within the hive rather than take cleansing flights.
Treatment:
Spring (prior to honey flow)
--- The only registered treatment for nosema is Fumadil-B®. Treat if there are
more than 1 million spores per bee.
--- Mix Fumadil-B® with sugar syrup according to the label and feed to bees.
Late spring/summer (during/immediately following honey flow)
--- No treatment warranted. Maintain strong colonies.
Autumn (preparing for winter)
--- Treat if there are more than 1 million spores per bee.
--- Mix Fumadil-B® with sugar syrup according to the label and feed to bees.
 Spore stage of Nosema apis, the protozoan that causes Nosema disease in honey bees. Magnified about 400 times, on a hemocytometer which has small squares to quantify the spores. Photo by Yuchuan Qin. 2003, MSU. |
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