Confirmation of the Y215H mutation in the β 2 -octopamine receptor in Varroa destructor is associated with contemporary cases of amitraz resistance in the US.

-octopamine receptor of amitraz resistant Varroa encourages the development and validation of low-cost, high throughput genotyping protocols to assess amitraz resistance. Resistance monitoring via genotyping will allow for large-scale passive monitoring to accurately determine the prevalence of amitraz resistance rather than directed sampling of apiaries with known resistance issues. Genotyping of Varroa for amitraz resistance early in the beekeeping season may predict late season resistance at the colony level and provide beekeepers with enough time to develop an effective Varroa management strategy. This article is protected by copyright. All rights reserved.