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

  2 Responses to “Pesticides Hit Queen Bee Numbers”

  1. #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 !!!

  2. 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.

 Leave a Reply

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>



Top-Viewed Posts Last 30 Days

  1. POLL: Should the ban on South Africa’s horn trade be lifted? » [3081 Views]
  2. 120,000 dead: half of the world’s saiga die in less than a month » [1172 Views]
  3. Swifts migrate from Beijing to southern Africa without landing » [932 Views]
  4. Vicious murdering bully chosen as Britain’s national bird » [881 Views]
  5. Murder Most Foul in the Faroes » [838 Views]
  6. Butterfly wings inspire cosmetics and bomb detectors » [764 Views]
  7. Earth enters new extinction phase » [721 Views]
  8. Yellow-breasted bunting population collapses across Eurasia » [706 Views]
  9. Poll: Should stricter sonar controls be imposed on the US navy? » [651 Views]
  10. Iberian lynx: back from the brink of extinction … and run down by cars » [647 Views]

Top-Viewed Posts Last 12 Months

  1. POLL: Should the trophy hunting of giraffes be banned? » [11989 Views]
  2. » POLL: Should the ban on fox hunting be relaxed in the UK? [10683 Views]
  3. POLL: Should the Faroe Islands’ whale slaughter be allowed to continue? » [7469 Views]
  4. POLL: Should bear hunting be banned in the US? » [4097 Views]
  5. Komodo and its Dragons » [3962 Views]
  6. POLL: Should lion canned hunting be banned in South Africa? » [3890 Views]
  7. Poll: Should hunting of black bears in Florida be allowed? » [3249 Views]
  8. POLL: Should the ban on South Africa’s horn trade be lifted? » [3081 Views]
  9. POLL: Should the slaughter of wolves in British Columbia be banned? » [2987 Views]
  10. Petition: Stop Lion Canned Hunting in South Africa – Shocking Video » [2764 Views]