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SUMMARY:Simultaneous camouflage and conspicuous signalling in an island li
 zard - Kate Marshall
DTSTART:20141205T163000Z
DTEND:20141205T170000Z
UID:TALK56551@talks.cam.ac.uk
CONTACT:Ana Pinharanda
DESCRIPTION:Animals need to be camouflaged from predators\, but also need 
 to be conspicuous to communicate with mates and rivals. In this talk I wil
 l present results showing how evolution responds to this dilemma in Aegean
  wall lizards (Podarcis erhardii). Using visual modeling I show that\, due
  to differences in sensitivity to ultraviolet coloration\, conspecifics pe
 rceive bright sexual signals that are less visible to hunting birds. Moreo
 ver\, P. erhardii have camouflaged backs and relatively conspicuous sides\
 , making them less visible to birds hunting from above while still highly 
 conspicuous to conspecifics on the ground. Thus\, adaptations that exploit
  the differing visual sensitivities and perspectives of predators and cons
 pecifics can reconcile the conflicting demands of camouflage and conspicuo
 us sexual signals.
LOCATION:Tea Room\, Department of Zoology
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