Source: Phys
A recent study highlights a unique population of hybrid honeybees in Southern California that show strong resistance to destructive Varroa mites, a major factor in colony losses. U.S. beekeepers reported losing up to 62% of colonies in 2025 due to multiple stressors, including parasites and disease. However, colonies led by locally adapted hybrid queens had about 68% fewer mites and were far less likely to require chemical treatments.
Researchers found that mites were less attracted to larvae from these bees, suggesting resistance begins early in development and may be genetic. The bees originate from a diverse mix of lineages, including African and European strains. While not fully immune, their natural defenses offer promising insights for breeding and reducing chemical reliance. The findings provide hope for improving pollinator health and sustaining global food systems.
Read the full story HERE: https://phys.org/news/2026-04-socal-hybrid-bees-outsmart-varroa.html