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Joint effects of female preference intensity and frequency-dependent predation on the polymorphism maintenance in aposematic sexual traits
journal contributionposted on 24.11.2022, 02:53 authored by Aditya Ponkshe, John EndlerJohn Endler
Maintenance of variation in aposematic traits within and among populations is paradoxical because aposematic species are normally under positive frequency-dependent predation (PFD), which is expected to erode variation. Aposematic traits can evolve in an ecological context where aposematic traits are simultaneously under mate choice. Here, we examine how the mate preference intensity affects the permissiveness of polymorphism in sexually selected aposematic traits under different PFD regimes. We use the haploid version of the classical sexual selection model and show that strong mate preferences can substantially increase the permissiveness of polymorphism in aposematic traits under different PFD regimes. The Fisher process can interact with PFD, and their interaction can promote the maintenance of polymorphism within populations when mate preferences are strong. We show that the same selective conditions that promote the maintenance of polymorphism within populations reduce the likelihood of divergence in aposematic traits among populations.
JournalEcology and Evolution
Publication classificationC1 Refereed article in a scholarly journal
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aposematismDIVERSITYEcologyEnvironmental Sciences & EcologyEVOLUTIONEvolutionary BiologyFisher processfrequency-dependent predationLADYBIRDSLife Sciences & Biomedicinemate choiceMATE CHOICEMODELSMULLERIAN MIMICRYNATURAL-SELECTIONpolymorphism maintenanceScience & TechnologySHIFTING BALANCESPECIATIONwarning signalsWARNING-COLORfrequency‐dependent predationSchool of Life and Environmental SciencesFaculty of Science Engineering and Built Environment