Varroa destructor mites are a devastating parasite of honey bee colonies, causing colony collapse without active management. Treatment and varroa-resistant genetics are the primary welfare interventions.
Individual bees in varroa-infested colonies experience weakened immune function, deformed wings from viral infection, and shortened lifespan. Colony collapse causes the death of tens of thousands of individual bees. Active management with appropriate treatments and selection for resistant genetics significantly reduces this individual and colony-level welfare suffering.