Navigation Links
Pesticide combination affects bees' ability to learn
Date:3/28/2013

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 in the research at levels shown to occur in the wild, could interfere with the learning circuits in the bee's brain. They also found that bees exposed to combined pesticides were slower to learn or completely forgot important associations between floral scent and food rewards.

In the study published today (27th March 2013) in Nature Communications, the University of Dundee's Dr Christopher Connolly and his team investigated the impact on bees' brains of two common pesticides: pesticides used on crops called neonicotinoid pesticides, and another type of pesticide, coumaphos, that is used in honeybee hives to kill the Varroa mite, a parasitic mite that attacks the honey bee.

The intact bees' brains were exposed to pesticides in the lab at levels predicted to occur following exposure in the wild and brain activity was recorded. They found that both types of pesticide target the same area of the bee brain involved in learning, causing a loss of function. If both pesticides were used in combination, the effect was greater.

The study is the first to show that these pesticides have a direct impact on pollinator brain physiology. It was prompted by the work of collaborators Dr Geraldine Wright and Dr Sally Williamson at Newcastle University who found that combinations of these same pesticides affected learning and memory in bees. Their studies established that when bees had been exposed to combinations of these pesticides for 4 days, as many as 30% of honeybees failed to learn or performed poorly in memory tests. Again, the experiments mimicked levels that could be seen in the wild, this time by feeding a sugar solution mixed with appropriate levels of pesticides.

Dr Geraldine Wright said: "Pollinators perform soph
'/>"/>

Contact: Rob Dawson
Rob.Dawson@bbsrc.ac.uk
01-793-413-204
Biotechnology and Biological Sciences Research Council
Source:Eurekalert

Page: 1 2

Related biology news :

1. New approaches for controlling pesticide exposure in children
2. Pesticide application as potential source of noroviruses in fresh food supply chains
3. Prenatal exposure to pesticide DDT linked to adult high blood pressure
4. Scientists take objective look at terms least toxic pesticides applied as last resort
5. Combined pesticide exposure affects bumblebee colony success
6. Air in expectant moms homes contains pesticides, border study finds
7. Commonly used pesticide turns honey bees into picky eaters
8. Effect of chronic exposure to chemicals used as weapons, pesticides under study
9. Novel combination therapy shuts down escape route, killing glioblastoma tumor cells
10. Experimental drug combination selectively destroys lymphoma cells
11. FASEB SRC announces conference registration open for: Genetic Recombination & Genome Rearrangements
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/18/2014)... people are too stressed they are often grouchy, grumpy, ... Institute (BMI) at EPFL have just highlighted a fundamental ... and the loss of social skills and cognitive impairment. ... regulatory molecule in the brain. This was revealed by ... , Carmen Sandi,s team went to look for answers ...
(Date:9/17/2014)... reproductive technologies, the justice and well-being of our ... identify key issues, articulate their values and concerns, ... defensible ways forward. But what are the best ... Hastings Center and the Presidential Commission for the ... publish a series of essays to highlight the ...
(Date:9/17/2014)... A rare genetic disorder known as Jacobsen syndrome has ... investigation by researchers at San Diego State University and ... suggesting better treatment options for people with Jacobsen syndrome, ... underpinnings of autism., Jacobsen syndrome affects approximately 1 in ... It occurs in a person when there is a ...
Breaking Biology News(10 mins):How stress tears us apart 2Why bioethics literacy matters 2Why bioethics literacy matters 3A link between Jacobsen syndrome and autism 2
... Scientists across the world are building an extensive repository ... understanding the function of the approximately 57,000 genes that ... Rice Functional Genomics Consortium recently announced the public availability ... mutations in about half of the known functional genes ...
... people are affected with retinitis pigmentosa (RP), a disease ... blindness. Now, a University of Missouri researcher has identified ... different forms of RP. This discovery will help scientists ... humans. "The same genetic mutations ...
... WASHINGTON, DC As researchers continue to examine ... ,important that people understand the differences among various ... Corn Refiners Association (CRA). Interchanging two distinctly different ... corn syrup, creates factually incorrect conclusions and misleads ...
Cached Biology News:200,000 rice mutants available worldwide for scientific investigation 2Cats' eye diseases genetically linked to diseases in humans 2Pure fructose frequently confused with high fructose corn syrup 2
(Date:9/17/2014)... Nev. , Sept. 17, 2014  PDL BioPharma, Inc. ... its independent registered accounting firm, Ernst & Young LLP ("EY") ... was confirmed in a letter delivered to the Company on ... on September 16, 2014.  PDL has issued ... "We have received a number of inquiries on the reason ...
(Date:9/17/2014)... PRINCETON, N.J. , Sept. 17, 2014 /PRNewswire/ ... developing targeted therapeutic devices to address infectious disease, cancer ... Sciences, Inc. (ESI), disclosed today that each company will ... Summit. On September 18 th , ... presentation entitled: "Exosomes: A Multiplexed Platform for Clinical Management." ...
(Date:9/17/2014)... NEWTOWN, Pa. , Sept. 17, 2014 ... services and eClinical Solutions, today announced three of its ... Conference for Clinical Data Management to be held ... Vegas, Nevada . The Company also announced the ... to raise overall quality in clinical trials acquired earlier ...
(Date:9/17/2014)... 2014 Alternative Fuels Americas, Inc. (AFAI) announced today ... Purpose Vehicle in partnership with Jatro Greentech, Inc., a ... The SPV shall be called AFAI Jatro Green Ethiopia and ... shareholder. The SPV shall pursue Jatropha planting and biofuels production ... Ethiopia . "Although we have experienced ...
Breaking Biology Technology:PDL BioPharma Issues Statement on Resignation of Ernst and Young as Corporate Auditors 2PDL BioPharma Issues Statement on Resignation of Ernst and Young as Corporate Auditors 3Aethlon Medical and Exosome Sciences To Present at the Exosomes & SingleCell Analysis Summit 2Aethlon Medical and Exosome Sciences To Present at the Exosomes & SingleCell Analysis Summit 3BioClinica to Present at 20th Annual SCDM Conference 2BioClinica to Present at 20th Annual SCDM Conference 3AFAI Signs Joint Venture Agreement With Jatro Greentech Inc. 2AFAI Signs Joint Venture Agreement With Jatro Greentech Inc. 3
... U.S. ... business, BOSTON, MA ... Hand, the world,s first commercially,available bionic hand, today announced that it has ... the,United States., Bill Graham has been named U.S. sales manager for ...
... PLC Systems Inc.,(Amex: PLC ) today announced that ... Conference on February 18-21, 2008 at the Ritz,Carlton Laguna Niguel ... 20th beginning at 3:30 pm local time. Presenting for the ... webcast of the presentation will be available at the company,s,website ...
... Open DICOM Standard DR and Data Management Systems Spurs ... Forty-Five Percent Growth for Company, ... a,leading developer of digital radiography (DR), PACS (Picture Archiving and,Communications ... the company,s revenues grew 45 percent,to surpass $35 million for ...
Cached Biology Technology:Touch Bionics adds to sales, marketing, production and design teams 2Touch Bionics adds to sales, marketing, production and design teams 3PLC Systems to Present at the ROTH Conference 2Eklin Medical Reports Record Revenues for 2007 2Eklin Medical Reports Record Revenues for 2007 3