Joint effects of female preference intensity and frequency‐dependent predation on the polymorphism maintenance in aposematic sexual traits

Abstract 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...

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Main Authors: Aditya Ponkshe, John A. Endler
Format: Article
Language:English
Published: Wiley 2022-10-01
Series:Ecology and Evolution
Subjects:
Online Access:https://doi.org/10.1002/ece3.9356
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author Aditya Ponkshe
John A. Endler
author_facet Aditya Ponkshe
John A. Endler
author_sort Aditya Ponkshe
collection DOAJ
description Abstract 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.
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spelling doaj.art-252ac9ed8b21440cb775b72d7cb7c3db2022-12-22T04:15:25ZengWileyEcology and Evolution2045-77582022-10-011210n/an/a10.1002/ece3.9356Joint effects of female preference intensity and frequency‐dependent predation on the polymorphism maintenance in aposematic sexual traitsAditya Ponkshe0John A. Endler1Centre for Integrative Ecology, School of Life & Environmental Sciences Deakin University Waurn Ponds Victoria AustraliaCentre for Integrative Ecology, School of Life & Environmental Sciences Deakin University Waurn Ponds Victoria AustraliaAbstract 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.https://doi.org/10.1002/ece3.9356aposematismFisher processfrequency‐dependent predationmate choicepolymorphism maintenancewarning signals
spellingShingle Aditya Ponkshe
John A. Endler
Joint effects of female preference intensity and frequency‐dependent predation on the polymorphism maintenance in aposematic sexual traits
Ecology and Evolution
aposematism
Fisher process
frequency‐dependent predation
mate choice
polymorphism maintenance
warning signals
title Joint effects of female preference intensity and frequency‐dependent predation on the polymorphism maintenance in aposematic sexual traits
title_full Joint effects of female preference intensity and frequency‐dependent predation on the polymorphism maintenance in aposematic sexual traits
title_fullStr Joint effects of female preference intensity and frequency‐dependent predation on the polymorphism maintenance in aposematic sexual traits
title_full_unstemmed Joint effects of female preference intensity and frequency‐dependent predation on the polymorphism maintenance in aposematic sexual traits
title_short Joint effects of female preference intensity and frequency‐dependent predation on the polymorphism maintenance in aposematic sexual traits
title_sort joint effects of female preference intensity and frequency dependent predation on the polymorphism maintenance in aposematic sexual traits
topic aposematism
Fisher process
frequency‐dependent predation
mate choice
polymorphism maintenance
warning signals
url https://doi.org/10.1002/ece3.9356
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