New research finds that bumblebees gather substantially higher amounts of toxic heavy metals than honeybees, even when both species forage in the same environment. Studies reported by ScienceDaily and Phys.org, citing work from the University of Cambridge, show that bumblebees collect up to about seven times as much of these metals as honeybees. The findings indicate that differences in foraging behavior or exposure pathways can lead to unequal contamination levels among closely co-occurring pollinators.
The researchers warn that this higher metal burden may have broader biological consequences beyond immediate toxicity. Potential effects include reduced ability to forage for food, impaired reproductive success, and harm to overall colony health. Because the metals are described as a hidden source of pollution, the study suggests that contamination could undermine bumblebee populations over time without being obvious from behavior alone.
Overall, both outlets agree on the central result—bumblebees accumulate markedly more toxic metals than honeybees under comparable conditions—and on the concern that such exposure can affect key functions involved in survival and colony maintenance.
