Bad News for Baby Bees

Beyond Pesticides      1/31/14

HoneycombNeonicotinoid pesticides (or neonics) continue to gain notoriety as a driving factor in declining bee populations. But a mounting body of evidence also shows that neonics aren’t the only class of pesticides harming these critical pollinators.

report released this week — by researchers from Penn State and the University of Florida — helps build a case that several pesticides commonly found in hives kill bee larvae.

Researchers tested four of the pesticides most commonly found in hives — chlorothalonil, chlorpyrifos, fluvalinate and coumaphos. These chemicals were fed to honeybee larvae on their own and in combination with each other, at concentrations that are currently found in hives.

The results? All four chemicals contributed to higher larvae mortality, and several combinations were more toxic than individual chemicals on their own.


Take action » Call on EPA's leader, Gina McCarthy, to make protecting bees from pesticides a top priority. The science is clear, it's time for action.