Pesticides Make Bees Lose Their Way  

Posted by Big Gav in

Reuters has an article on new studies into the impact of pesticides on bee colonies - Pesticides Make Bees Lose Their Way.

Scientists have discovered ways in which even low doses of widely used pesticides can harm bumblebees and honeybees, interfering with their homing abilities and making them lose their way.

In two studies published in the journal Science on Thursday, British and French researchers looked at bees and neonicotinoid insecticides – a class introduced in the 1990s now among the most commonly used crop pesticides in the world. …

In the first of the Science studies, a University of Stirling team exposed developing colonies of bumblebees to low levels of a neonicotinoid called imidacloprid, and then placed the colonies in an enclosed field site where the bees could fly around collecting pollen under natural conditions for six weeks.

At the beginning and end of the experiment, the researchers weighed each of the bumblebee nests – which included the bees, wax, honey, bee grubs and pollen – to see how much the colony had grown.

Compared to control colonies not exposed to imidacloprid, the researchers found the treated colonies gained less weight, suggesting less food was coming in.

The treated colonies were on average eight to 12 percent smaller than the control colonies at the end of the experiment, and also produced about 85 percent fewer queens – a finding that is key because queens produce the next generation of bees.

0 comments

Post a Comment

Statistics

Locations of visitors to this page

blogspot visitor
Stat Counter

Total Pageviews

Ads

Books

Followers

Blog Archive

Labels

australia (614) global warming (415) solar power (388) peak oil (349) renewable energy (282) electric vehicles (238) wind power (190) ocean energy (164) csp (158) geothermal energy (144) solar thermal power (144) smart grids (140) tidal power (137) oil (136) solar pv (132) coal seam gas (131) energy storage (131) nuclear power (127) lng (116) china (115) iraq (113) geothermal power (112) green buildings (110) natural gas (110) agriculture (90) oil price (80) biofuel (78) smart meters (72) wave power (72) uk (68) electricity grid (67) coal (66) energy efficiency (64) google (58) bicycle (51) internet (51) shale gas (49) surveillance (49) big brother (48) food prices (48) thin film solar (42) tesla (41) biomimicry (40) canada (40) scotland (38) ocean power (37) politics (37) shale oil (37) new zealand (35) air transport (34) algae (34) water (34) concentrating solar power (33) arctic ice (32) queensland (32) saudi arabia (32) california (31) credit crunch (31) bioplastic (30) offshore wind power (30) population (30) cogeneration (28) geoengineering (28) batteries (26) drought (26) resource wars (26) woodside (26) bruce sterling (25) censorship (25) cleantech (25) ctl (23) carbon tax (22) economics (22) exxon (22) limits to growth (22) buckminster fuller (21) distributed manufacturing (21) iraq oil law (21) coal to liquids (20) indonesia (20) lithium (20) origin energy (20) brightsource (19) rail transport (19) ultracapacitor (19) santos (18) ausra (17) electric bikes (17) michael klare (17) atlantis (16) cellulosic ethanol (16) collapse (16) iceland (16) mapping (16) ucg (16) bees (15) concentrating solar thermal power (15) ethanol (15) geodynamics (15) lithium ion batteries (15) psychology (15) al gore (14) brazil (14) bucky fuller (14) fertiliser (14) ambient energy (13) biodiesel (13) carbon emissions (13) cities (13) investment (13) kenya (13) matthew simmons (13) public transport (13) biochar (12) chile (12) desertec (12) internet of things (12) otec (12) texas (12) victoria (12) big oil (11) cradle to cradle (11) energy policy (11) hybrid car (11) terra preta (11) tinfoil (11) toyota (11) amory lovins (10) antarctica (10) fabber (10) gazprom (10) goldman sachs (10) gtl (10) severn estuary (10) volt (10) afghanistan (9) alaska (9) biomass (9) carbon trading (9) distributed generation (9) esolar (9) four day week (9) fuel cells (9) jeremy leggett (9) pge (9) sweden (9) arrow energy (8) eroei (8) fish (8) floating offshore wind power (8) guerilla gardening (8) linc energy (8) methane (8) methane hydrates (8) nanosolar (8) natural gas pipelines (8) pentland firth (8) relocalisation (8) saul griffith (8) stirling engine (8) us elections (8) western australia (8) airborne wind turbines (7) bloom energy (7) boeing (7) bolivia (7) chp (7) climategate (7) copenhagen (7) vinod khosla (7) apocaphilia (6) ceramic fuel cells (6) cigs (6) futurism (6) jatropha (6) local currencies (6) nigeria (6) ocean acidification (6) scenario planning (6) somalia (6) t boone pickens (6) space based solar power (5) varanus island (5) garbage (4) global energy grid (4) kevin kelly (4) low temperature geothermal power (4) oled (4) tim flannery (4) v2g (4) club of rome (3) norman borlaug (2) peak oil portfolio (1)