Google Play icon

Wildflowers on farms — not just crops — can expose bees to neonicotinoids

Share
Posted October 22, 2015

Since bee colonies started declining at alarming rates over the past few decades, some scientists have identified a group of pesticides called neonicotinoids that are commonly used on crops as a potential contributor.

Image credit: Wikimedia Commons, Maciej A. Czyzewski

Image credit: Wikimedia Commons, Maciej A. Czyzewski

Now one team reports in ACS’ journal Environmental Science & Technology that bees could be getting an unexpected dose of neonicotinoids from wildflowers on farms. Their results suggest past studies may have underestimated the bees’ exposure to these compounds.

Scientists trying to close in on the causes of bee declines have identified a mix of pressures that could be to blame. Loss of habitats, and contact with parasites and neonicotinoids all have been cited as possible factors. Past research on neonicotinoids has focused mainly on bees’ exposure through crops treated with the pesticides. But because several flowering plants grow naturally on farms, and farmers often sow wildflowers near fields to attract pollinators, Cristina Botías and colleagues suspected that they could be a missing piece of the puzzle.

The researchers analyzed pollen samples from plants growing in areas close to arable fields and from beehives on five farms in the U.K. They found that pollen from wildflowers growing in these locations often contains neonicotinoid residues. In addition, 97 percent of neonicotinoids in the pollen that bees brought back to honey bee hives was from wildflowers, which were not directly treated with the pesticides. They say that neonicotinoids are likely leaching through the soil and being taken up by the nearby wildflowers. The team says their results suggest that exposure is likely to be higher and more prolonged than currently recognized.

Source: ACS

Featured news from related categories:

Technology Org App
Google Play icon
85,413 science & technology articles

Most Popular Articles

  1. New treatment may reverse celiac disease (October 22, 2019)
  2. "Helical Engine" Proposed by NASA Engineer could Reach 99% the Speed of Light. But could it, really? (October 17, 2019)
  3. New Class of Painkillers Offers all the Benefits of Opioids, Minus the Side Effects and Addictiveness (October 16, 2019)
  4. The World's Energy Storage Powerhouse (November 1, 2019)
  5. Plastic waste may be headed for the microwave (October 18, 2019)

Follow us

Facebook   Twitter   Pinterest   Tumblr   RSS   Newsletter via Email