Tag Archives: clothianidin

Insecticides are killing the honeybees

Is corporate profit worth wiping out honeybees?

Brian Wallheimer wrote in ScienceDaily 12 Jan 2012, Honeybee Deaths Linked to Seed Insecticide Exposure,

Analyses of bees found dead in and around hives from several apiaries over two years in Indiana showed the presence of neonicotinoid insecticides, which are commonly used to coat corn and soybean seeds before planting. The research showed that those insecticides were present at high concentrations in waste talc that is exhausted from farm machinery during planting.

The insecticides clothianidin and thiamethoxam were also consistently found at low levels in soil — up to two years after treated seed was planted — on nearby dandelion flowers and in corn pollen gathered by the bees, according to the findings released in the journal PLoS One this month.

“We know that these insecticides are highly toxic to bees; we found them in each sample of dead and dying bees,” said Christian Krupke, associate professor of entomology and a co-author of the findings.

The authors are careful to say they don’t claim to have found the only cause of honeybee deaths, because they can’t prove that. They do seem to have proved specific insecticides are one cause.

Is wiping out honebees worth the profits of a very few large agrobusinesses that sell these poisons?

Who sells this stuff, anyway? Bayer, Arysta, and Valent sell clothianidin, and Syngenta (SYT) sells thiamethoxam. What’s Syngenta’s excuse?

How do we feed a growing world population?
By poisoning honeybees, apparently.

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EPA approved bee-killing pesticide despite warnings from its own scientsts

Susie Madrak writes in Crooks and Liars, Leaked Document: EPA Scientists Warned Of Bee-Toxic Pesticide. Agency Approved It Anyway.
Clothianidin has already been banned by Germany, France, Italy, and Slovenia for its toxic effects. So why won’t the EPA follow? It probably has something to do with Big Agra, who loves the stuff for treating the corn seed supply.
Ariel Schwartz in Fast Company a reminds us of why this matters
The world honey bee population has plunged in recent years, worrying beekeepers and farmers who know how critical bee pollination is for many crops.
She includes a quote from the study:
Clothianidin’s major risk concern is to nontarget insects (that is, honey bees). Clothianidin is a neonicotinoid insecticide that is both persistent and systemic. Acute toxicity studies to honey bees show that clothianidin is highly toxic on both a contact and an oral basis. Although EFED does not conduct RQ based risk assessments on non-target insects, information from standard tests and field studies, as well as incident reports involving other neonicotinoids insecticides (e.g., imidacloprid) suggest the potential for long-term toxic risk to honey bees and other beneficial insects.

Here’s the leaked document (PDF).

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