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Evolutionary branching: trade-offs and magic traits

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Auteurs : Kisdi, Eva (Auteur de la Conférence)
CIRM (Editeur )

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Résumé : Adaptive dynamics has shaped our understanding of evolution by demonstrating that, via the process of evolutionary branching, ecological interactions can promote diversification. The classical approach to study the adaptive dynamics of a system is to specify the ecological model including all trade-off functions and other functional relationships, and make predictions depending on the parameters of these functions. However, the choice of trade-offs and other functions is often the least well justified element of the model, and examples show that minor variations in these functions can lead to qualitative changes in the model predictions. In the first part of this talk, I shall revisit evolutionary branching and other evolutionary phenomena predicted by adaptive dynamics using an inverse approach: I investigate under which conditions a trade-off function exists that yields a given evolutionary outcome.
Evolutionary branching can amount to the birth of new species, but only if reproductive isolation evolves between the emerging branches. Recent studies show that mating is often assortative with respect to the very trait that is under ecological selection. Such "magic traits" can ensure reproductive isolation, yet they are by far not free tickets to speciation. In the second half of my talk, I discuss the consequences of sexual selection emerging from assortative mating, and show how a perfect female should search for mates.

Codes MSC :
91A40 - Game-theoretic models
92D15 - Problems related to evolution
92D25 - Population dynamics (general)
91A22 - Evolutionary games

    Informations sur la Vidéo

    Réalisateur : Hennenfent, Guillaume
    Langue : Anglais
    Date de publication : 13/09/2016
    Date de captation : 06/09/2016
    Sous collection : Research talks
    arXiv category : Quantitative Biology
    Domaine : Mathematics in Science & Technology
    Format : MP4 (.mp4) - HD
    Durée : 01:00:50
    Audience : Researchers
    Download : https://videos.cirm-math.fr/2016-09-06_Kisdi.mp4

Informations sur la Rencontre

Nom de la rencontre : Models in population dynamics and ecology / Modèles en dynamique des populations et écologie
Organisateurs de la rencontre : Langlais, Michel ; Malchow, Horst ; Petrovskii, Sergei ; Poggiale, Jean-Christophe
Dates : 05/09/2016 - 09/09/2016
Année de la rencontre : 2016
URL Congrès : http://conferences.cirm-math.fr/1495.html

Données de citation

DOI : 10.24350/CIRM.V.19044703
Citer cette vidéo: Kisdi, Eva (2016). Evolutionary branching: trade-offs and magic traits. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.19044703
URI : http://dx.doi.org/10.24350/CIRM.V.19044703

Voir aussi

Bibliographie

  • Kisdi, E., & Priklopil, T. (2011). Evolutionary branching of a magic trait. Journal of Mathematical Biology, 63(2), 361-397 - http://dx.doi.org/10.1007/s00285-010-0377-1

  • Kisdi, E. (2015). Construction of multiple trade-offs to obtain arbitrary singularities of adaptive dynamics. Journal of Mathematical Biology, 70(5), 1093-1117 - http://dx.doi.org/10.1007/s00285-014-0788-5

  • Geritz, S.A.H., Kisdi, E., Meszéna, G., & Metz, J.A.J. (1998). Evolutionarily singular strategies and the adaptive growth and branching of the evolutionary tree. Evolutionary Ecology, 12(1), 35-57 - http://dx.doi.org/10.1023/A:1006554906681

  • Priklopil, T., Kisdi, E., & Gyllenberg, M. (2015). Evolutionarily stable mating decisions for sequentially searching females and the stability of reproductive isolation by assortative mating. Evolution, 69(4), 1015–1026 - http://dx.doi.org/10.1111/evo.12618



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