Insecticide causes changes in honeybee genes, research finds

Jul 02, 2013
Insecticide causes changes in honeybee genes, research finds

(Phys.org) —New research by academics at The University of Nottingham has shown that exposure to a neonicotinoid insecticide causes changes to the genes of the honeybee.

The study, published in the scientific journal PLOS ONE, supports the recent decision taken by the European Commission to temporarily ban three amid concerns that they could be linked to bee deaths.

There is growing evidence connecting the decline in the that pollinates one-third of the food that we eat, and insecticides, but this is the first comprehensive study to look at changes in the activity of honeybee genes linked to one of the recently banned neonicotinoids, imidacloprid.

The study, led by Dr Reinhard Stöger, Associate Professor in Epigenetics in the University's School of Biosciences, was conducted under field realistic conditions and showed that a very low exposure of just two parts per billion has an impact on the activity of some of the honeybee genes.

Jeopardising survival

The researchers identified that cells of honeybee had to work harder and increase the activity of genes involved in breaking down toxins, most likely to cope with the . Genes involved in regulating energy to run cells were also affected. Such changes are known to reduce the lifespan of the most widely studied insect, the common fruit fly, and lower a larva's probability of surviving to adulthood.

Dr Stöger said: "Although larvae can still grow and develop in the presence of imidacloprid, the stability of the developmental process appears to be compromised. Should the bees be exposed to additional stresses such as pests, disease and then it is likely to increase the rate of development failure."

Precautionary approach

Chris Shearlock, Sustainable Development Manager at The Co-operative, said: "This is a very significant piece of research, which clearly shows clear changes in as a result of exposure to a pesticide, which is currently in common use across the UK.

"As part of our Plan Bee campaign launched in 2009 we have adopted a precautionary approach and prohibited the use of six neonicotinoid pesticides, including imidacloprid, on our own-brand fresh and frozen produce and have welcomed the recent approach by the European Commission to temporarily ban three neonicotinoid pesticides as this will allow for research into the impact on both pollinators and agricultural productivity."

The research paper "Transient Exposure to Low Levels of Insecticide Affects Metabolic Networks of Honeybee Larvae" is published in PLOS ONE.

Explore further: Rescued 'abandoned' penguin chicks survival similar to colony rates

More information: dx.plos.org/10.1371/journal.pone.0068191

Related Stories

Pesticide combination affects bees' ability to learn

Mar 27, 2013

Two new studies have highlighted a negative impact on bees' ability to learn following exposure to a combination of pesticides commonly used in agriculture. The researchers found that the pesticides, used ...

EU hints at insecticide ban over threat to bees

Jan 16, 2013

The European Commission hinted on Wednesday that it could ban several insecticides, some made by German chemicals giant Bayer, after scientists found disturbing evidence of harm to bees.

Recommended for you

Secret wing colours attract female fruit flies

15 hours ago

Bright colours appear on a fruit fly's transparent wings against a dark background as a result of light refraction. Researchers from Lund University in Sweden have now demonstrated that females choose a mate ...

Pigeons and people play the odds when rewards are higher

17 hours ago

(Phys.org) —If you were weighing the risks, would you choose to receive a guaranteed $100, or take a 50/50 chance of winning either $200 or nothing? Researchers at the University of Alberta have shown that ...

User comments : 4

Adjust slider to filter visible comments by rank

Display comments: newest first

vlaaing peerd
5 / 5 (2) Jul 02, 2013
oh how weird? According to Syngenta, Bayer and Monsanto who have funded similar research for the sake of our environment and wellbeing, the bee deaths are caused by a very very vicious insect mite and not by their neonicotinoid products.

Rattling rattlesnakes on a stick... now I don't know who to believe anymore. Companies with more research and funding in PR + marketing than their own products surely wouldn't think we are that gullible now would they?

http://www.reuter...mentNews

now ban this crap out of Europe, hopefully killing their stockmarket on the way down.
PhysicsPolice
not rated yet Jul 11, 2013
The study has serious flaws.

1. Between-hive systemics were not reported. Systemic error might render the difference between exposed and control hives statistically insignificant.

2. Dose-response was not measured. This flaw in experimental setup weakens the evidence for a causal relationship between imidacloprid and gene expression.
vlaaing peerd
not rated yet Jul 13, 2013
Your so called "serious" flaws does not influence the certainty of it's measurements and outcome by even a small bit. And in the least does not help to provide any reason why this product should be allowed.

The certainty this product without any doubt doesn't harms humans, animals or environment is what we want to know. This research (however unscientifc you claim it to be) casts reasonable doubts about the legitimacy of neonicotinoids.

The safety is what needs to be assured before the product should be allowed in the first place.

And non-existing very very vicious insect mites aren't going to help those in favour of it. At least not here.
ValeriaT
not rated yet Jul 13, 2013
IMO the culprit is not an imidacloprid, but the GMO induced allergy of bees.