Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/121408
Title: ROLE OF NATURAL AND SEXUAL SELECTION IN THE EVOLUTION OF BUTTERFLY WING COLOURS
Authors: SU SHIYU
Keywords: Batesian mimicry, visual modelling, swallowtail butterflies, sexual dichromatism, mate choice, female-limited mimetic polymorphism
Issue Date: 5-Aug-2015
Citation: SU SHIYU (2015-08-05). ROLE OF NATURAL AND SEXUAL SELECTION IN THE EVOLUTION OF BUTTERFLY WING COLOURS. ScholarBank@NUS Repository.
Abstract: BUTTERFLY WING COLOURS ARE USED FOR BOTH PREDATION AVOIDANCE AND SEXUAL SIGNALING. HERE, I EXAMINED HOW NATURAL AND SEXUAL SELECTION INFLUENCED THE EVOLUTION OF BATESIAN MIMICRY AND SEXUAL DICHROMATISM IN BUTTERFLIES. THROUGH VISUAL MODELLING, I SHOWED THAT MIMETIC RESEMBLANCE IN BUTTERFLY MIMICRY RINGS VARIED IN A SEX- AND WING SURFACE-SPECIFIC MANNER. FURTHERMORE, I FOUND THAT MIMETIC SWALLOWTAIL BUTTERFLIES EXHIBITED ADAPTIVE WING COLOUR CHANGES NOT APPARENT TO HUMANS, WHILE SEXUALLY MONOMORPHIC BUTTERFLIES DISPLAYED SEXUAL COLOUR DIFFERENCES DETECTABLE TO CONSPECIFICS AND PREDATORS. NEXT, I CONDUCTED BEHAVIOURAL EXPERIMENTS ON TWO SWALLOWTAIL BUTTERFLY SPECIES TO INVESTIGATE THE ROLE OF MATE CHOICE IN THE EVOLUTION OF SEXUAL DICHROMATISM AND FEMALE-LIMITED MIMETIC POLYMORPHISM. I DEMONSTRATED THAT MALE WING COLOUR MANIPULATION DID NOT AFFECT FEMALE MATE PREFERENCE, WHEREAS MALES PREFERRED TO MATE WITH MIMETIC FEMALES. MY FINDINGS INDICATED THAT BUTTERFLY WING COLOURS EVOLVE UNDER B
URI: http://scholarbank.nus.edu.sg/handle/10635/121408
Appears in Collections:Ph.D Theses (Open)

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