The use of infrared heat lamps could help bumblebees mitigate some of the effects caused by pesticides, according to a study published by the Royal Society in the United Kingdom.
The researchers concluded that exposure to neonicotinoids — one of the classes of pesticides most widely used around the world — affects bumblebees’ ability to regulate their body temperature, a process essential for activities such as flight and foraging.
According to the results, the body temperature of insects exposed to these pesticides decreased, on average, by almost 8 °C over three days. The scientists warn that this reduction could compromise pollinators’ performance and, consequently, affect their survival.
To test potential ways to reduce this impact, the team used near-infrared lamps installed near the colonies. The trials showed that just five minutes of heat exposure were enough to reduce the pesticide-induced cooling effect by about half.
The authors consider that this approach could be used in commercial beehives as a way to bolster pollinators’ resilience against exposure to chemicals present in the environment.
In addition to revealing a new physiological impact associated with neonicotinoids, the study highlights the importance of developing strategies to help protect pollinating insects. Although exposure to pesticides does not always cause the immediate death of bees, it can compromise biological functions fundamental to their survival and to the functioning of ecosystems.
The researchers emphasize that protecting pollinators is increasingly relevant in the context of climate change and growing pressure on global food systems. Many agricultural crops depend directly on the activity of insects such as bees and bumblebees for pollination.
According to the team, infrared light therapy does not replace the need to reduce the risks associated with pesticide use, but it could constitute a complementary tool to minimize some of its effects on colonies.
The results suggest that small technological adaptations in commercial beehives could help preserve pollinators’ health and, consequently, support food security and biodiversity.
