Canadian Association of Professional Apiculturists Statement on Honey Bee Wintering Losses in Canada (2015)
Respondents reported considerable variation in identifying and ranking the top 4 possible causes of colony losses. Answers included starvation, weak colonies, poor queens, Nosema and weather conditions.
Beekeepers responded to questions on management of Varroa mites, Nosema and American foulbrood. Over 73% of beekeepers monitored Varroa infestation, the majority using Apivar™, formic acid and oxalic acid for treatments. Despite monitoring Nosema infections less frequently, many beekeepers regularly used fumagillin to treat nosemosis. Across Canada, registered antibiotics are used to treat for American foulbrood however beekeepers in Quebec and British Columbia applied these products less frequently. CAPA continues to work with various stakeholders and is actively involved in the Bee Health Round Table to address risks and opportunities related to bee health.