colony-collapse
Colony collapse disorder (CCD) is a phenomenon in which worker bees abruptly abandon their hives, leaving colonies unable to sustain themselves. Because honey bees are among the most important pollinators for flowering plants and crops worldwide, CCD poses a direct threat to plant reproduction and agricultural yields. Understanding the causes of CCD — including pesticide exposure, pathogens, and habitat loss — is critical for developing strategies to protect both wild plant communities and cultivated food systems.
open_in_new WikipediaPubMed · 2026-05-02
Scientists identified the bacteria living on Varroa destructor mites — the leading killer of honey bee colonies globally — finding that the mite carries its own distinct microbial community dominated by three bacterial families that may amplify the mite's harm to bees. This opens new avenues for targeted, microbiome-based treatments to protect bee colonies.
The Varroa mite microbiome is dominated by three bacterial families — Acetobacteraceae, Morganellaceae, and Segniliparaceae — identified through next-generation sequencing of the 16S rRNA gene.
The microbial community on Varroa mites is distinct from the honey bee's own microbiome, indicating the parasite harbors a unique bacterial ecosystem separate from its host.
The identified bacteria are hypothesized to contribute directly or indirectly to Varroa's pathogenicity, representing novel therapeutic and preventive targets for bee colony protection.