IDEAS home Printed from https://ideas.repec.org/p/wop/iasawp/ir00040.html
   My bibliography  Save this paper

Evolutionary Branching and Sympatric Speciation Caused by Different Types of Ecological Interactions

Author

Listed:
  • M. Doebeli
  • U. Dieckmann

Abstract

Evolutionary branching occurs when frequency-dependent selection splits a phenotypically monomorphic population into two distinct phenotypic clusters. A prerequisite for evolutionary branching is that directional selection drives the population towards a fitness minimum in phenotype space. This paper demonstrates that selection regimes leading to evolutionary branching readily arise from a wide variety of different ecological interactions within and between species. We use classical ecological models for symmetric and asymmetric competition, for mutualism, and for predator-prey interactions to describe evolving populations with continuously varying characters. For these models, we investigate the ecological and evolutionary conditions that allow for evolutionary branching and establish that branching is a generic and robust phenomenon. Evolutionary branching becomes a model for sympatric speciation when population genetics and mating mechanisms are incorporated into ecological models. In sexual populations with random mating, the continual production of intermediate phenotypes from two incipient branches prevents evolutionary branching. In contrast, when mating is assortative for the ecological characters under study, evolutionary branching is possible in sexual populations and can lead to speciation. Therefore, we also study the evolution of assortative mating as a quantitative character. We show that evolution under branching conditions selects for assortativeness and thus allows sexual populations to escape from fitness minima. We conclude that evolutionary branching offers a general basis for understanding adaptive speciation and radiation under a wide range of different ecological conditions.

Suggested Citation

  • M. Doebeli & U. Dieckmann, 2000. "Evolutionary Branching and Sympatric Speciation Caused by Different Types of Ecological Interactions," Working Papers ir00040, International Institute for Applied Systems Analysis.
  • Handle: RePEc:wop:iasawp:ir00040
    as

    Download full text from publisher

    File URL: http://www.iiasa.ac.at/Publications/Documents/IR-00-040.pdf
    Download Restriction: no

    File URL: http://www.iiasa.ac.at/Publications/Documents/IR-00-040.ps
    Download Restriction: no

    References listed on IDEAS

    as
    1. G. Meszena & E. Kisdi & U. Dieckmann & S.A.H. Geritz & J.A.J. Metz, 2000. "Evolutionary Optimization Models and Matrix Games in the Unified Perspective of Adaptive Dynamics," Working Papers ir00039, International Institute for Applied Systems Analysis.
    2. U. Dieckmann & R. Law, 1996. "The Dynamical Theory of Coevolution: A Derivation from Stochastic Ecological Processes," Working Papers wp96001, International Institute for Applied Systems Analysis.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. repec:eee:apmaco:v:284:y:2016:i:c:p:66-78 is not listed on IDEAS
    2. Bhattacharyay, A. & Drossel, B., 2005. "Modeling coevolution and sympatric speciation of flowers and pollinators," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 345(1), pages 159-172.
    3. repec:eee:thpobi:v:76:y:2009:i:1:p:1-12 is not listed on IDEAS
    4. repec:eee:thpobi:v:73:y:2008:i:2:p:222-243 is not listed on IDEAS
    5. Ross Cressman & Josef Hofbauer & Frank Riedel, 2005. "Stability of the Replicator Equation for a Single-Species with a Multi-Dimensional Continuous Trait Space," Bonn Econ Discussion Papers bgse12_2005, University of Bonn, Germany.
    6. repec:eee:thpobi:v:108:y:2016:i:c:p:75-88 is not listed on IDEAS
    7. Bagnoli, Franco & Guardiani, Carlo, 2005. "A model of sympatric speciation through assortative mating," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 347(C), pages 534-574.
    8. repec:eee:ecomod:v:204:y:2007:i:1:p:253-268 is not listed on IDEAS
    9. repec:eee:ecomod:v:207:y:2007:i:2:p:277-285 is not listed on IDEAS
    10. repec:eee:thpobi:v:77:y:2010:i:2:p:95-104 is not listed on IDEAS
    11. Cressman, Ross, 2005. "Stability of the replicator equation with continuous strategy space," Mathematical Social Sciences, Elsevier, vol. 50(2), pages 127-147, September.
    12. repec:eee:thpobi:v:74:y:2008:i:4:p:311-323 is not listed on IDEAS
    13. repec:eee:thpobi:v:89:y:2013:i:c:p:12-23 is not listed on IDEAS
    14. Cook, James N. & Oono, Y., 2010. "Competitive localization," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 389(9), pages 1849-1860.

    More about this item

    NEP fields

    This paper has been announced in the following NEP Reports:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wop:iasawp:ir00040. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Thomas Krichel). General contact details of provider: http://edirc.repec.org/data/iiasaat.html .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.