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: 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

Viking Heathen Origin of Horse Meat Taboo
2015-04-21 4:07
YouTube description: The recent horse meat scandal involving Tescos burgers, Ikea meatballs, Findus lasagne and Taco Bell has got people wondering why the English don't eat horses. I covered this subject in my recent dissertation. The answer is to do with paganism. The Catholic church realised that eating horse meat was connected to pagan rites in the North of Europe, ...
Generation Identitaire - Declaration of War
2015-04-21 2:50
We are Generation Identitaire. We are the generation who get killed for glancing at the wrong person, for refusing someone a cigarette, or having an "attitude" that annoys someone. We are the generation of ethnic fracture, total failure of coexistence, and forced mixing of the races. We are the generation doubly punished: Condemned to pay into a social system so ...
No Jab, No Pay reforms: Religious exemptions for vaccination dumped
2015-04-20 20:03
Religious exemptions for childhood vaccinations will be scrapped to toughen Australia’s new “no jab, no pay’’ laws stripping welfare from parents who refuse to vaccinate their children. Social Services Minister Scott Morrison revealed he is dumping the last remaining exemption on the books after holding talks with religious leaders. Just a week after The Sunday Telegraph revealed Mr Morrison was scrapping exemptions ...
Inside David Lynch: An Esoteric Guide to Twin Peaks
2015-04-20 18:24
‘I learned that just beneath the surface there’s another world, and still different worlds as you dig deeper.’ – David Lynch If you’ve ever sensed the flimsy, thin veneer of what parades itself as the good ole US of A, and felt a bit like you’ve been sold a fake, then David Lynch’s Twin Peaks is a series you must see. ...
Third-gender toilet sign – now a reality in Sweden
2015-04-20 18:29
If you don’t identify yourself as a man, a woman or are officially handicapped — where should you go to relieve yourself? In Sweden, the social justice warriors have solved the problem by inventing a third-gender toilet sign. A couple of years ago, the Swedish language was introduced to a new personal pronoun, “hen“, to replace gender specific hon (she) and ...
More News »