Winter losses of honeybee colonies over the 2017-2018 season were greater than expected and greater than the average of 30 percent per year for the past decade. “The winter losses were 59.5 percent,” said Keith Tignor, Virginia State Apiarist. He adds that this is the highest rate since 2000 when the state began monitoring winter losses. There was a decrease in colony losses reported for the summer of 2017 when compared to the 2016 summer season. VDACS staff found high levels of Varroa mites and nosema infections in wintering bees. Both of these maladies shorten the lifespan of worker bees, increasing mortality rates in winter months. Nationally, 30.7 percent of managed colonies in the United States were lost during the winter of 2017-2018. This represents a 9.5 percent increase over the previous year.
Source: Augusta Free Press, June 29, 2018
- Login om te reageren