Pesticide makes bees forget the scent for food, new study finds
2013-03-28 0:00

By Damian Carrington | The Guardian

Neocotinoids block part of brain bees use for learning, leaving them unable to make link between floral scents and nectar

Widely used pesticides have been found in new research to block a part of the brain that bees use for learning, rendering some of them unable to perform the essential task of associating scents with food. Bees exposed to two kinds of pesticide were slower to learn or completely forgot links between floral scents and nectar.

These effects could make it harder for bees to forage among flowers for food, thereby threatening their survival and reducing the pollination of crops and wild plants.

The findings add to existing research that neonicotinoid pesticides are contributing to the decline in bee populations.

It has also been revealed that a separate government field study on the impact of the pesticides on bees was seriously compromised by contamination because the chemicals are so widespread in the environment.

The government put the field study at the heart of the UKs resistance to a Europe-wide ban on the controversial pesticides earlier this month. The UK was one of nine out of 27 member states that opposed suspending some uses of the insecticides across the EU, after environment secretary Owen Paterson said, "I have asked the EC to wait for the results of our field trials, rather than rushing to a decision". On Wednesday, his department said more field research was needed.

The new findings on the effect of pesticides on bee brains showed that within 20 minutes of exposure to neonicotinoids the neurons in the major learning centre of the brain stopped firing. Christopher Connolly at the University of Dundee, who led the peer-reviewed work published in the online journal Nature Communications, said it was the first to show the pesticides had a direct impact on pollinator brain physiology.


Read the full article at:

Related Articles
Quantum Honeybees
EU Prepares to Ban Three Pesticides Harmful to Bees
Worker bees switch jobs via their epigenomes

Latest News from our Front Page

Sweden to give over 8 million euros to Turkey for "refugee deal" - Europe to give three billion euros total
2015-12-01 1:44
Prime Minister Stefan Löfven announced on Sunday that Sweden would contribute to a joint action plan agreed by nine EU nations designed to limit the number of refugees arriving in Europe via Turkey. The deal came after the German Chancellor Angela Merkel held a surprise summit in Brussels involving the leaders of nine countries including Sweden, France and the UK. The European ...
Swedish woman raped by "refugee" refuses to report it because she feels sorry for him
2015-12-01 0:12
Victim sympathized with rapist's "difficult situation" A Swedish woman who was raped by an Iraqi “refugee” on a train initially refused to report the incident to police because she ‘felt sorry’ for her attacker. The incident occurred on a night train between Umeå and Sundsvall back in October. The Iraqi refugee was traveling back to Sweden because he was unhappy with the ...
ISIS Oil Trade Full Frontal: "Raqqa's Rockefellers," Bilal Erdogan, KRG Crude, And The Israel Connection
2015-11-30 21:56
"Effectively, we have been financially discriminated against for a long time. By early 2014, when we did not receive the budget, we decided we need to start thinking about independent oil sales” --  Ashti Hawrami, Kurdistan’s minister for natural resources In June of 2014, the SCF Altai (an oil tanker) arrived at Ashkelon port. Hours later, the first shipment of Kurdish ...
Prosecutors ban Soros Foundation as 'threat to Russian national security'
2015-11-30 21:04
The Russian Prosecutor General’s Office has recognized George Soros’s Open Society Institute and another affiliated organization as undesirable groups, banning Russian citizens and organizations from participation in any of their projects. In a statement released on Monday, prosecutors said the activities of the Open Society Institute and the Open Society Institute Assistance Foundation were a threat to the foundations of Russia’s ...
Israeli Colonel Caught with Islamic State (IS) Pants Down
2015-11-30 21:11
This was definitely not supposed to happen. It seems that an Israeli military man with the rank of colonel was “caught with IS pants down.” By that I mean he was captured amid a gaggle of so-called IS–or Islamic State or ISIS or DAESH depending on your preference–terrorists, by soldiers of the Iraqi army. Under interrogation by the Iraqi intelligence ...
More News »