Modeling Mating Patterns Given Mutual Mate Choice: The Importance of Individual Mating Preferences and Mating System

Author:

Bessa-Gomes Carmen1,Clobert Jean1,Legendre Stéphane2,Møller Anders Pape3

Affiliation:

1. Laboratoire d'écologie, UMR 7625 – Fonctionnement et Evolution des Systèmes Ecologiques, Université Pierre et Marie Curie, 7 quai St. Bernard, 75005 Paris, France

2. Laboratoire d'écologie, UMR 7625 – Fonctionnement et Evolution des Systèmes Ecologiques, ENS, 46, rue d'Ulm, 75230 Paris Cedex 05, France

3. Laboratoire d'écologie evolutive parasitaire, FRE 2365, Université Pierre et Marie Curie, 7 quai St. Bernard, 75005 Paris, France

Abstract

When we consider structured populations with sexual reproduction, the distribution of characters among mating pairs may influence the population biology, namely its dynamics and genetics. In the present paper, we propose a general framework to estimate the population mating patterns taking into account individual mating preferences and mating system, thus taking into account the inter- and intra-sexual interactions such as mate competition and mate choice. According to our results, mating patterns are not a direct reflection of mating preferences, but also depend upon the average sex ratio between individuals that are ready to mate at any given time (i.e., the Operational Sex Ratio, OSR). Therefore, mating patterns should be assessed not only in function of preferences, but also of OSR. It is then possible to distinguish three OSR regions: (1) the equilibrium OSR, where there is a predominance of assortative mating patterns due to differential access to mates (inter-sexual interactions); (2) the slightly biased OSR, where there is a high diversity of mating patterns and no clear predominance of inter- or intra-sexual interactions; and (3) the highly biased OSR where there is a predominance of mating patterns corresponding to single-sex uniform preferences and an increased influence of intra-sexual interactions. We hope that this approach may allow to further explore the interaction between OSR and mate choice, namely how such interaction may affect sexual selection and mate choice tactics.

Publisher

World Scientific Pub Co Pte Lt

Subject

Applied Mathematics,Agricultural and Biological Sciences (miscellaneous),Ecology,Applied Mathematics,Agricultural and Biological Sciences (miscellaneous),Ecology

Reference36 articles.

1. Sexual Selection

2. Sexual selection

3. Ultraviolet sexual dimorphism and assortative mating in blue tits

4. A. Arak, Male-Male Competition and Mate Choice in Anuran Amphibians, ed. P. Bateson (Cambridge University Press, Cambridge, 1983) pp. 181–210.

5. Non-random pairing in American kestrels: mate choice versus intra-sexual competition

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