Quantcast
Mar 302012
 

Pesticides are not the whole problem, but some think they could be a significant one

Some of the world’s most commonly used pesticides are killing bees by damaging their ability to navigate and reducing numbers of queens, research suggests.

Scientific groups in the UK and France studied the effects of neonicotinoids, which are used in more than 100 nations on farm crops and in gardens.

The UK team found the pesticides caused an 85% drop in queen production.

Writing in the journal Science, the groups note that bee declines in many countries are reducing crop yields.

In the UK alone, pollination is calculated to be worth about £430m to the national economy. And the US is among countries where a succession of local populations has crashed, a syndrome known as Colony Collapse Disorder.

Many causes have been suggested, including diseases, parasites, reduction in the range of flowers growing wild in the countryside, pesticides, or a combination of them all. The neonicotinoids investigated in the two Science papers are used on crops such as cereals, oilseed rape and sunflowers.

Often the chemical is applied to seeds before planting. As the plant grows, the pesticide is contained in every part of it, deterring insect pests such as aphids. But it also enters the pollen and nectar, which is how it can affect bees.

Dave Goulson from the UK’s University of Stirling and colleagues studied the impact of the neonicotinoid imidacloprid on bumblebees. They let bees from some colonies feed on pollen and sugar water containing levels of imidacloprid typically found in the wild, while others received a natural diet. Then they placed the colonies out in the field.

Read full article, which was written by Richard Black Environment correspondent, BBC News

Leave a Comment

  • binnie

    #RoundUp smells of Lamp-Oil (kerosene) + disinfectant Spray – was blowing across to our Woodland – #Pesticides have Ruined our World !

    #Countries_reduction_in_Crop_Yields !!! Now…we should Worry !

    We appear to be Witnessing Many #Extinctions on Twitter – We cannot lose anyMore! The biological balance is disturbed by #humans, So Sad!

    All because of the #Pesticides #Sytemics #Round-up – We must cease using these please !

    #SaveOurBees !!!

  • http://flowerhillfarm.blogspot.com/ Carol Duke

    Important posting Supertrooper! Pesticides and constant loss of swaths of wildflowers are pretty frightening and we are seeing more problems with our needed insect populations. Thank you for sharing Richard Black’s article.

Top-Viewed Posts Last 30 Days

  1. POLL: Should the trophy hunting of giraffes be banned? » [1791 Views]
  2. Shot Egyptian vulture leads conservationists to bizarre black-market for bird parts » [690 Views]
  3. Join the 1st World Giraffe Day and help save these gentle giants » [604 Views]
  4. Cuckoos’ shameless egg-laying tactics revealed » [464 Views]
  5. POLL: Should the Slaughter of Grouse be allowed to continue? » [443 Views]
  6. Albatross Internet Darling Takes First Flight » [374 Views]
  7. Software can decode bird songs » [364 Views]
  8. Monkeys use field scientists as human shields against predators » [326 Views]
  9. Pelagornis sandersi: Paleontologist Discovers Largest-Ever Flying Bird » [320 Views]
  10. Widespread impacts of neonicotinoids ‘impossible to deny’ » [299 Views]

Top-Viewed Posts Last 12 Months

  1. POLL: Should the Slaughter of Grouse be allowed to continue? » [33757 Views]
  2. POLL: Should bear hunting be banned in the US? » [28032 Views]
  3. POLL: Should China’s shameful tiger farms be closed down? » [12111 Views]
  4. Petition: Stop Lion Canned Hunting in South Africa – Shocking Video » [9902 Views]
  5. POLL: Should the Faroe Islands’ whale slaughter be allowed to continue? » [7882 Views]
  6. POLL: Should the fox-hunting laws in the UK be relaxed? » [7000 Views]
  7. Trophy Hunting in Africa – Wildlife Slaughter in Graphic Images » [5594 Views]
  8. POLL: Should the Dolphin Slaughter in Taiji Cove be stopped? » [5271 Views]
  9. Wildlife Photography – Ethics and Conservation Issues? » [5124 Views]
  10. Komodo and its Dragons » [4526 Views]