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H 1 Evolutionary branching: trade-offs and magic traits

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

      Langue : Anglais
      Date de publication : 13/09/2016
      Date de captation : 06/09/2016
      Collection : Research talks ; Mathematics in Science and Technology
      Format : MP4
      Durée : 01:00:50
      Domaine : Mathematics in Science & Technology
      Audience : Chercheurs ; Doctorants , Post - Doctorants
      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

    Citation Data

    DOI : 10.24350/CIRM.V.19044703
    Cite this video as: 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

    1. 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

    2. 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

    3. 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

    4. 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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