Pesticide makes bees forget the scent for food, new study finds
2013 03 28

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 UK’s 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: guardian.co.uk



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

CIA torture is reason for France to exit NATO – Le Pen
2014-12-17 20:20
The shocking revelations of CIA torture techniques give France a reason to exit NATO, National Front party leader Marine Le Pen said on Saturday. The report on the CIA’s former interrogation practices has drawn wide criticism since its release. “If indeed everyone is outraged by the tortures used by the US then, let’s leave NATO,” Le Pen said during an interview ...
900 Documented Examples of Obama's Lawbreaking, Lying, Corruption, Cronyism, Hypocrisy & Waste
2014-12-17 20:00
By Tim Brown from sonsoflibertymedia.com: Our friend, Dan from Squirrel Hill, has updated his list to 900 documented examples of Barack Obama¡¯s lying, lawbreaking, corruption, cronyism, etc. He began with 252 examples, then quickly grew to 504 and later to 694. Recently, he added more than 200 more examples of the usurper-in-chief¡¯s unlawful acts. Every President, every politician, and every human ...
A Step Closer to the Mysterious Origin of the Viking Sword Ulfberht
2014 12 16
The universe is full of mysteries that challenge our current knowledge. In "Beyond Science" Epoch Times collects stories about these strange phenomena to stimulate the imagination and open up previously undreamed of possibilities. Are they true? You decide. Ulfberht was like a Medieval luxury brand for swords—but unlike your Gucci purse, the swords were of such high quality they were almost ...
Israel proposes natural gas pipeline to Southern Europe
2014-12-16 12:39
Israel is pushing for the European Union (EU) to approve the construction of a pipeline running from the Middle Eastern country to supply Cyprus, Greece and Italy with natural gas. The proposed EastMed pipeline will carry gas from the Tamar and Leviathan gas fields located in the Mediterranean Sea, to Southern Europe. As the Times of Israel reported in an ...
As Robots Grow Smarter, American Workers Struggle to Keep Up
2014 12 16
A machine that administers sedatives recently began treating patients at a Seattle hospital. At a Silicon Valley hotel, a bellhop robot delivers items to people’s rooms. Last spring, a software algorithm wrote a breaking news article about an earthquake that The Los Angeles Times published. Although fears that technology will displace jobs are at least as old as the Luddites, there ...
More News »