Evolutionary branching in deme-structured populations.

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Serval ID
serval:BIB_817690979587
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Evolutionary branching in deme-structured populations.
Journal
Journal of Theoretical Biology
Author(s)
Wakano J.Y., Lehmann L.
ISSN
1095-8541 (Electronic)
ISSN-L
0022-5193
Publication state
Published
Issued date
2014
Peer-reviewed
Oui
Volume
351
Pages
83-95
Language
english
Abstract
Adaptive dynamics shows that a continuous trait under frequency dependent selection may first converge to a singular point followed by spontaneous transition from a unimodal trait distribution into a bimodal one, which is called "evolutionary branching". Here, we study evolutionary branching in a deme-structured population by constructing a quantitative genetic model for the trait variance dynamics, which allows us to obtain an analytic condition for evolutionary branching. This is first shown to agree with previous conditions for branching expressed in terms of relatedness between interacting individuals within demes and obtained from mutant-resident systems. We then show this branching condition can be markedly simplified when the evolving trait affect fecundity and/or survival, as opposed to affecting population structure, which would occur in the case of the evolution of dispersal. As an application of our model, we evaluate the threshold migration rate below which evolutionary branching cannot occur in a pairwise interaction game. This agrees very well with the individual-based simulation results.
Keywords
Algorithms, Animals, Biological Evolution, Game Theory, Genetic Drift, Models, Genetic, Mutation, Population Density, Population Dynamics, Selection, Genetic
Pubmed
Web of science
Create date
01/03/2014 10:26
Last modification date
08/11/2019 11:54
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