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SUMMARY:BITING BACK AT BLOOD-SUCKING INSECTS - Dr James Logan\, Rothamsted
  Research\, Harpenden
DTSTART:20070906T180000Z
DTEND:20070906T190000Z
UID:TALK7775@talks.cam.ac.uk
CONTACT:John Wilkins
DESCRIPTION:*Why do some people always get bitten by mosquitoes while othe
 rs are left alone?* \n\nMosquitoes are attracted to our body odour\, but u
 ntil now\, differential attraction was not fully understood. At Rothamsted
  Research we have demonstrated that several behaviour-modifying chemicals 
 that repel or ‘mask’ some individuals are responsible for this phenome
 non. This talk will describe how we used sophisticated analytical chemistr
 y techniques and behavioural experiments to unravel this complex story. So
 me exciting new results from our field-based repellency trials against man
 y biting insects\, including the Scottish biting midge and the malaria mos
 quito\, will also be revealed.\n\n*FOR SCIENTISTS* : Haematophagous insect
 s are differentially attracted to odours from individual human hosts. Howe
 ver\, the responsible semiochemicals have not been identified previously. 
 Using techniques including gas chromatography (GC)\, GC-electroantennorgap
 hy and GC-mass spectrometry\, we have identified several behaviourally act
 ive compounds that are responsible for differential attraction. These comp
 ounds show great potential for their use in control technologies against b
 iting insects.\n\nThe lecture will be suitable for GCSE students.  Free ad
 mission. N.B. No tickets - so come early to get a good seat. Doors open at
  18:30. \n\nPlease check www.soci.org for the latest news on this and othe
 r SCI events. \n\n
LOCATION:Department of Chemistry\, Lensfield Road\, Cambridge
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