Effective Monitoring Methods and Determining Economic Treatment Thresholds for Varroa Mites in Honey Bees

There are many stressors contributing to poor health in honey bees. Varroa mites are by far the most devastating parasite of bees. These mites have been contributing to high annual bee colony mortality (45% in 2022) in Canada. Despite using recommendations on how to apply options to control Varroa according to Integrated Pest Management (IPM) principles, these recommendations are based on old information developed in early 2000’s. Unfortunately, this information has presently very limited value and could be a part of failing to control mites. In this proposed project we plan to determine the population dynamics of three mite levels (>.5, 1, and 3%), bees and brood production and impacts on honey production and colony survivorship. Statistical models will be used to determine the economic and injury thresholds. A comparison of Varroa monitoring methods including alcohol wash, powdered sugar shake, and sticky traps will be conducted to determine the most effective method for monitoring mites. This research will provide extremely important information to allow beekeepers to test their mite levels with effective methods, and treat in time based on newly developed thresholds. Thus, they can make appropriate management decisions to effectively control mites and keep healthy bees.

Faculty Supervisor:

David Halstead

Student:

Partner:

Saskatchewan Beekeeper's Development Commission

Discipline:

Earth science

Sector:

Agriculture and Food; Natural Resources; Sustainability & the Environment

University:

Saskatchewan Polytechnic

Program: