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On the Origin of Species by Sympatric Speciation

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  • U. Dieckmann
  • M. Doebeli

Abstract

Understanding speciation is a fundamental biological problem. It is believed that many species originated through allopatric divergence in geographically isolated populations of the same ancestral species (1-3). In contrast, the possibility of sympatric speciation has often been dismissed, partly because of theoretical difficulties (2,3). Most previous models analyzing sympatric speciation concentrated on particular aspects of the problem while neglecting others (4-10). We present a model which integrates a novel combination of different features and shows that sympatric speciation is a likely outcome of competition for resources. We use explicit multilocus genetics to describe sexual reproduction in an individual-based model, and we consider the evolution of assortative mating depending either on the ecological character affecting intraspecific resource competition or on a selectively neutral marker trait. In both cases, evolution of assortative mating often leads to reproductive isolation between ecologically diverging subpopulations. When assortative mating depends on a marker trait, and is therefore not directly linked to resource competition, speciation occurs when genetic drift breaks the lineage equilibrium between marker and ecological trait. Our theory conforms well with mounting empirical evidence for the sympatric origin of many species (10-18).

Suggested Citation

  • U. Dieckmann & M. Doebeli, 1999. "On the Origin of Species by Sympatric Speciation," Working Papers ir99013, International Institute for Applied Systems Analysis.
  • Handle: RePEc:wop:iasawp:ir99013
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    References listed on IDEAS

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    1. 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.
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    Cited by:

    1. Alexandros Rigos & Heinrich H. Nax, 2015. "Assortativity evolving from social dilemmas," Discussion Papers in Economics 15/19, Department of Economics, University of Leicester.
    2. repec:spr:jogath:v:46:y:2017:i:2:d:10.1007_s00182-016-0548-4 is not listed on IDEAS
    3. 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.
    4. repec:eee:thpobi:v:99:y:2015:i:c:p:76-97 is not listed on IDEAS
    5. Chaianunporn, Thotsapol & Hovestadt, Thomas, 2012. "Concurrent evolution of random dispersal and habitat niche width in host-parasitoid systems," Ecological Modelling, Elsevier, vol. 247(C), pages 241-250.
    6. repec:eee:thpobi:v:76:y:2009:i:1:p:1-12 is not listed on IDEAS
    7. Jonathan Newton, 2017. "The preferences of Homo Moralis are unstable under evolving assortativity," International Journal of Game Theory, Springer;Game Theory Society, vol. 46(2), pages 583-589, May.
    8. repec:eee:thpobi:v:73:y:2008:i:2:p:222-243 is not listed on IDEAS
    9. Champagnat, Nicolas, 2006. "A microscopic interpretation for adaptive dynamics trait substitution sequence models," Stochastic Processes and their Applications, Elsevier, vol. 116(8), pages 1127-1160, August.
    10. E. Kisdi & F.J.A. Jacobs & S.A.H. Geritz, 2000. "Red Queen Evolution by Cycles of Evolutionary Branching and Extinction," Working Papers ir00030, International Institute for Applied Systems Analysis.
    11. Åke Brännström & Jacob Johansson & Niels von Festenberg, 2013. "The Hitchhiker’s Guide to Adaptive Dynamics," Games, MDPI, Open Access Journal, vol. 4(3), pages 1-25, June.
    12. repec:eee:thpobi:v:77:y:2010:i:1:p:6-13 is not listed on IDEAS
    13. repec:eee:thpobi:v:108:y:2016:i:c:p:75-88 is not listed on IDEAS
    14. 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.
    15. repec:eee:thpobi:v:75:y:2009:i:1:p:46-55 is not listed on IDEAS
    16. E. Kisdi & S.A.H. Geritz, 1999. "Evolutionary Branching and Sympatric Speciation in Diploid Populations," Working Papers ir99048, International Institute for Applied Systems Analysis.
    17. repec:eee:ecomod:v:222:y:2011:i:3:p:407-418 is not listed on IDEAS
    18. repec:eee:thpobi:v:79:y:2011:i:3:p:82-96 is not listed on IDEAS
    19. repec:eee:thpobi:v:89:y:2013:i:c:p:12-23 is not listed on IDEAS
    20. Cook, James N. & Oono, Y., 2010. "Competitive localization," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 389(9), pages 1849-1860.
    21. repec:eee:ecomod:v:204:y:2007:i:1:p:253-268 is not listed on IDEAS

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