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SUMMARY:Colours of speciation in fish and frogs - Martine Maan - Universit
 y of Groningen\, The Netherlands
DTSTART:20111115T160000Z
DTEND:20111115T170000Z
UID:TALK32099@talks.cam.ac.uk
CONTACT:Chris Jiggins
DESCRIPTION:Both ecological and sexual selection can contribute to populat
 ion divergence and speciation. Recent theory and data suggest that interac
 tions between these two selective pressures may be particularly powerful i
 n generating species diversity. For example\, sensory adaptation may chang
 e mating preferences through pleiotropy\; and mate choice for locally adap
 ted partners can accelerate divergent adaptation.\n\nIn my talk\, I will p
 resent some of my research on East-African cichlid fish and Panamanian poi
 son frogs. These case studies show how natural and sexual selection togeth
 er can shape diversity in animal signals and promote reproductive isolatio
 n. They also illustrate\, however\, the difficulties of distinguishing alt
 ernative evolutionary scenarios\, and of determining their relative import
 ance and temporal sequence.
LOCATION:Part II Lecture Theatre\, Department of Zoology
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