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Battle of bedbugs


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Battle of bedbugs

  1. 1. Battle of the bedbugs Rebecca Morelle reports
  2. 2. They feast on our bloodwhile we sleepleaving itchy, red weltsas their calling card.
  3. 3. Bedbugs are an insectthat many would like to see the back of. But in NorthAmerica, Europe andAustralia, infestations are on the rise - and our insecticidesare losing their bite.
  4. 4. Researchers at the University of Kentucky in the UShave found 14 genes associated with resistance to these chemicals. Theyre causing anumber of biological changes in the bedbugs.
  5. 5. These include thedevelopment of a thicker skin that stops the poisonsfrom penetrating andmutations within the insects bodies that prevent the toxins from hitting the nervous system
  6. 6. The genes linked to these changes are active in the insects tough outer shell -creating a formidablefirst line of defence.
  7. 7. These findings could help scientists to develop new insecticides that could either turn these genes off or bypass the pests molecular shields.
  8. 8. But until these substances are developed,exterminators arehaving to resort to more primitive tactics.
  9. 9. Rebecca Morelle reports 15 March 2013 Battle of the bedbugs
  10. 10. Rebecca Morelle reports 15 March 2013 Battle of the bedbugs