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Pages 10-15
First published 30 July 2014

Evolution of Frequency-Dependent Sexual Selection Using Agent-Based Model

Atsuko Mutoh, Shohei Kato and Nobuhiro Inuzuka

Abstract (Excerpt)

Nonindependent mate choice occurs when a female is influenced in her choices of mate by the social environment. Frequency-dependent selection (FDS) is a typical example of a nonindependent mate choice and comes in two forms: positive or negative. In the positive form, any rare variant is at a disadvantage, whereas rare variants are favored in the negative form. Both forms of FDS have been confirmed in many species, and several mathematical and theoretical biology studies have reported the advantages of each. However, few studies have focused on the evolution of the two forms of FDS together. In this work, we simulated FDS using an agent-based model consisting of imported mating strategy as gene and female preference influenced by the social environment as meme. Experimental results revealed a relation between the operational sex ratio of males and the FDS strategy of females. A similar tendency was observed among real animals.