"In addition to continued reports of CCD -- a still somewhat mysterious phenomenon in which entire bee colonies literally disappear, alien-abduction style, leaving not even their dead bodies behind -- bee populations are suffering poor health in general, and experiencing shorter life spans and diminished vitality. And while parasites, pathogens, and habitat loss can deal blows to bee health, research increasingly points to pesticides as the primary culprit.
Of particular concern is a group of pesticides, chemically similar to nicotine, called neonicotinoids (neonics for short), and one in particular called clothianidin. Instead of being sprayed, neonics are
used to treat seeds, so that they're absorbed by the plant's vascular system, and then end up attacking the central nervous systems of bees that come to collect pollen. Virtually all of today's genetically engineered Bt corn is treated with neonics. The chemical industry alleges that bees don't like to collect corn pollen, but new research shows that not only do bees indeed forage in corn, but they also have multiple other routes of exposure to neonics.
The Purdue University study, published in the journal PLoS ONE, found high levels of clothianidin in planter exhaust spewed during the spring sowing of treated maize seed. It also found neonics in the soil of unplanted fields nearby those planted with Bt corn, on dandelions growing near those fields, in dead bees found near hive entrances, and in pollen stored in the hives."
Maybe government can fix the problem.
"Unfortunately, it was the EPA itself that green-lit clothianidin and other neonics for commercial use, despite its own scientists' clear warnings about the chemicals' effects on bees and other pollinators. That doesn't bode well for the chances of getting neonics off the market now, even in light of the Purdue study's findings."
Honeybee problem nearing a 'critical point'
Claire Thompson for Grist, part of the Guardian Environment Network
guardian.co.uk, Friday 13 January 2012 10.25 EST