Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. Farming News .




FARM NEWS
Exposure to pesticides results in smaller worker bees
by Staff Writers
London, UK (SPX) Jan 21, 2014


File image.

Exposure to a widely used pesticide causes worker bumblebees to grow less and then hatch out at a smaller size, according to a new study by Royal Holloway University of London.

The research, published today in the Journal of Applied Ecology, reveals that prolonged exposure to a pyrethroid pesticide, which is used on flowering crops to prevent insect damage, reduces the size of individual bees produced by a colony.

The researchers, Gemma Baron, Dr Nigel Raine and Professor Mark Brown from the School of Biological Sciences at Royal Holloway worked with colonies of bumblebees in their laboratory and exposed half of them to the pesticide.

The scientists tracked how the bee colonies grew over a four month period, recording their size and weighing bees on micro-scales, as well as monitoring the number of queens and male bees produced by the colony.

"We already know that larger bumblebees are more effective at foraging. Our result, revealing that this pesticide causes bees to hatch out at a smaller size, is of concern as the size of workers produced in the field is likely to be a key component of colony success, with smaller bees being less efficient at collecting nectar and pollen from flowers," says researcher Gemma Baron from Royal Holloway.

The study is the first to examine the impact of pyrethroid pesticides across the entire lifecycle of bumblebees. The topical research is at the heart of a national Bee Health Conference running in London from Wednesday to Friday this week (22-24 January 2014).

Professor Mark Brown said: "Bumblebees are essential to our food chain so it's critical we understand how wild bees might be impacted by the chemicals we are putting into the environment. We know we have to protect plants from insect damage but we need to find a balance and ensure we are not harming our bees in the process."

Given the current EU moratorium on the use of three neonicotinoid pesticides, the use of other classes of pesticide, including pyrethroids, is likely to increase.

Dr Nigel Raine, who is an Invited Speaker at this week's bee conference, said: "Our work provides a significant step forward in understanding the detrimental impact of pesticides other than neonicotinoids on wild bees.

"Further studies using colonies placed in the field are essential to understand the full impacts, and conducting such studies needs to be a priority for scientists and governments."

The study was funded by a Natural Environment Research Council (NERC) PhD studentship, and the Insect Pollinators Initiative (joint-funded by the Biotechnology and Biological Sciences Research Council (BBSRC), Defra, NERC, the Scottish Government and the Wellcome Trust. It is managed under the auspices of the Living with Environmental Change (LWEC) partnership).

.


Related Links
Royal Holloway, University of London
Farming Today - Suppliers and Technology






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





FARM NEWS
Soil Microbes Alter DNA in Response to Warming
Atlanta GA (SPX) Jan 21, 2014
As scientists forecast the impacts of climate change, one missing piece of the puzzle is what will happen to the carbon in the soil and the microbes that control the fate of this carbon as the planet warms. Scientists studying grasslands in Oklahoma have discovered that an increase of 2 degrees Celsius in the air temperature above the soil creates significant changes to the microbial ecosy ... read more


FARM NEWS
China's pollution seen from space

Charles River Analytics Develops Satellite Image Processing System for NASA

Earth may be heaver than thought due to invisible belt of dark matter

More BARREL Balloons Take to the Skies

FARM NEWS
20th Anniversary of Initial Operational Capability of the GPS Constellation

Northrop Grumman and Trex Enterprises to Introduce Celestial Navigation to Soldier Precision Targeting Laser Systems

GPS Traffic Maps for Leatherback Turtles Show Hotspots to Prevent Accidental Fishing Deaths

China to upgrade homegrown GPS to improve accuracy

FARM NEWS
Image or reality? Leaf study needs photos and lab analysis

Meet the rainforest "diversity police"

Large, older trees keep growing at a faster rate

Oldest trees are growing faster, storing more carbon as they age

FARM NEWS
Boeing Joins BIOjet Team To Develop Biofuel Supply Chain In UAE

Renewable chemical ready for biofuels scale-up

UAE's Etihad demonstrates flight with biofuel mix

Boeing Finds Significant Potential in "Green Diesel" as a Sustainable Jet Fuel

FARM NEWS
Mideast looks at $50B to spend on solar power by 2020

From a carpet of nanorods to a thin film solar cell absorber within a few seconds

Solar-power device would use heat to enhance efficiency

DuPont Solamet Helps REC Increase Solar Panel Power Performance

FARM NEWS
France's Areva, Spain's Gamesa announce joint wind power venture

Musselroe Wind Farm provides fresh energy for local economy

Maine offshore wind project appears on track for federal funding

No Evidence of Residential Property Impacts Near Wind Turbines

FARM NEWS
Goldman Sachs pulls out from Pacific coal export project

Colombia stops Drummond coal shipments over environmental row

China coal mine accidents kill 1,049 in 2013: govt

Australia gives environmental nod to $5.7 bln coal project

FARM NEWS
HK employer charged with attacking Indonesian maids

Beijing's 'rat tribe' scurry from high costs underground

'Hypocritical crackdown' on China corruption activists: Amnesty

China activist Xu Zhiyong in silent protest at trial: lawyer




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement