Simulated ecology-driven sympatric speciation

Details Simulated ecology-driven sympatric speciation Simulated ecology-driven sympatric speciation

2000-11-27

arxiv.org/abs/cond-mat/0011458v3

Physical Review E, 64, 021906(1-6) (Aug 2001)

Physics

Condensed Matter

Statistical Mechanics

11 pages, 5 figures, 1 table, uses package RevTeX

Scientific paper

10.1103/PhysRevE.64.021906

We introduce a multi-locus genetically acquired phenotype, submitted to mutations and with selective value, in an age-structured model for biological aging. This phenotype describes a single-trait effect of the environment on an individual, and we study the resulting distribution of this trait among the population. In particular, our simulations show that the appearance of a double phenotypic attractor in the ecology induces the emergence of a stable polymorphism, as observed in the Galapagos finches. In the presence of this polymorphism, the simulations generate short-term speciation, when mating preferences are also allowed to suffer mutations and acquire selective value.

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