An illustration of honey bees with exes over their eyes

Wild bees play a crucial ecological and agricultural role, but pesticide use is making sightings of wild species increasingly rare. (Composite: Rhiannon Montelius. Image sources: Wikimedia Commons; Unsplash.)

Keeping native bees buzzing requires rethinking pest control

New research adds solid evidence to the suspicion that steep declines in America’s wild bee populations stem in large part from pesticide use. Saving the crucial pollinators requires new approaches to managing pesky insects, say USC Dornsife researchers.

ByDarrin S. Joy August 29, 2024

Whether you’re strolling through a garden, wandering a park, or simply enjoying an open space in the United States, you’re likely to notice bees buzzing about the flowers. While honeybees, imported from Europe in the 17th century to produce honey, are the most recognizable, they aren’t the only bees at work. If you’re a keen observer, you might spot some of the thousands of less familiar, native bee species that call these spaces home.

Native wild bees play a crucial ecological role, ensuring the survival and reproduction of countless plant species — including many agricultural crops — by spreading pollen as they forage for food. Unfortunately, their numbers seem to be declining, and despite experts suggesting multiple causes, the exact reason remains a mystery.

A new study published in Nature Sustainability sheds light on one potential cause: pesticide use. The research reveals a stark decline in the number of wild bee sightings, with appearances of some species dropping as much as 56% in areas of high pesticide use compared to areas with no pesticide use.