Varroa mites may be mighty small – about the size of the head of a pin – but the parasites are a primary cause of colony collapse disorder, a large problem for honeybee populations worldwide. A recent study published in the Proceedings of the National Academy of Sciences debunks the long-held belief that the mites feed on “bee blood” – AKA hemolymph.
North Carolina State University entomologist Allen Cohen, a co-author on the PNAS paper, wasn’t surprised by the study’s results. For years, he’s contended that the mites’ digestive system and the content of their excrement point to another, denser food source.
Samuel Ramsey and his University of Maryland colleagues found that Cohen was right. Conducting the research as part of his doctoral studies under Professor Dennis vanEngelsdorp, Ramsey determined that instead of drinking hemolymph, the mites consume the bees’ fat body, an organ that stores and uses nutrients as they are needed.
Read more at Vegetable Growers News here.
Sponsored by Ohio State University Extension IPM program and the USDA NIFA Crop Protection and Pest Management Competitive Grants Program (Grant number 2017-70006-27174).
The workshop was held on Dec. 14, 2018, and focused on weather conditions that could signal an inversion and a demonstration of the tools and information available in FieldWatch, a communication tool for sensitive crop farmers and pesticide applicators. Recordings from the talks are available here.
The workshop is divided into two recordings that feature:
Aaron Wilson, OSU Byrd Polar and Climate Research Center, discussing weather conditions that could signal an inversion.
Jared Shaffer, Ohio Department of Agriculture, discusses the FieldWatch sensitive crop registry and includes a demonstration of signing up for the registry and identifying fields, crops, and beehives.
Please click here to access the workshop.
National Pesticide Safety Education Center
PO Box 1391
Okemos, MI 48805, USA