New findings published in the journal Environmental Science & Technology investigate the use of insecticides--specifically neonicotinoids--and their effects on the decline of the honey bee population. Although sunlight plays an important role in degrading pollutants, its effects on neonicotinoids may diminish, particularly when exposed to water. In order to protect crops from pests, including whiteflies, beetles and termites, neonicotinoids are often used as a popular protection tool among farmers. However, they end up washing into the surface waters and soil. For the study, researchers looked to investigate the sunlight's effects on these insecticides in the water. They tested five neonicotinoids in water under simulated sunny conditions and within minutes, three degraded considerably, according to researchers. And while two took a few days to break down, a depth of just 3 inches of water was enough to shield at least one, thiamethoxam, from the sun. The researchers noted that at a persistent rate with shallow depth, this could increase insecticide exposure to both aquatic life and other wildlife exposure.
Source: Science World Report, July 8, 2015
http://www.scienceworldreport.com/articles/27588/20150708/insecticides-…
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