Model of populations colonizing a new habitat |
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Authors: | I Mróz A Pękalski |
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Institution: | (1) Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland, PL;(2) Institute of Theoretical Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland, PL |
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Abstract: | We propose a model suitable for investigating the conditions under which a population, adapted to a given environment, may
colonize a new neighbouring, spatially separated, habitat. We find out how similar the two regions must be for such a colonization
to succeed and what will be the spatial distribution of genetic pools of the two populations after the process. It is found
that between the two populations each adapted to the different region, a hybrid zone, characterized by increased heterozygosity,
may be formed. The dependence of the shape of the hybrid zone on the external (environmental) parameters is determined. When
the differences between the two regions are significant, the populations are separated by a depopulated zone. We show that
the conditions in the colonized habitat influence the genetic pool of the population living in the first region. Computer
simulations based on the standard Monte Carlo technique are used.
Received 11 December 1998 and Received in final form 17 December 1998 |
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Keywords: | PACS 87 10 +e General biophysics - 02 70 Lq Monte-Carlo and statistical methods - 07 05 Tp Computer modeling and simulation |
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