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SUMMARY:'Arctic reindeer and their adaptation to extreme changes in enviro
 nmental light' - Professor Glen Jeffery\, Institute of Ophthalmology\, UCL
DTSTART:20110118T130000Z
DTEND:20110118T140000Z
UID:TALK27649@talks.cam.ac.uk
CONTACT:John Mollon
DESCRIPTION:Abstract:      Arctic reindeer live in an extreme visual envir
 onment\, with months of relative darkness in winter and long periods of da
 ylight in summer. Their visual environment is also relatively UV rich. The
 se animals have evolved a unique method of living in this environment.  Fi
 rst\, they extend their visual sensitivity into the UV. Second\, they chan
 ge the reflectance of their tapetum lucidum between seasons from gold to d
 eep blue to increase photon capture during the dark winter.  Reindeer in s
 ub-Arctic regions do not switch the colour of their tapetum
LOCATION:Kenneth Craik Room\, Craik-Marshall Building\, Downing Site
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