Evolution of dispersal under variable connectivity

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http://hdl.handle.net/10138/234479

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Karisto , P & Kisdi , E 2017 , ' Evolution of dispersal under variable connectivity ' , Journal of Theoretical Biology , vol. 419 , pp. 52-65 . https://doi.org/10.1016/j.jtbi.2016.11.007

Titel: Evolution of dispersal under variable connectivity
Författare: Karisto, Petteri; Kisdi, Eva
Upphovmannens organisation: Department of Mathematics and Statistics
Datum: 2017-04-21
Språk: eng
Sidantal: 14
Tillhör serie: Journal of Theoretical Biology
ISSN: 0022-5193
DOI: https://doi.org/10.1016/j.jtbi.2016.11.007
Permanenta länken (URI): http://hdl.handle.net/10138/234479
Abstrakt: The pattern of connectivity between local populations or between microsites supporting individuals within a population is a poorly understood factor affecting the evolution of dispersal. We modify the well-known Hamilton May model of dispersal evolution to allow for variable connectivity between microsites. For simplicity, we assume that the microsites are either solitary, i.e., weakly connected through costly dispersal, or part of a well-connected cluster of sites with low-cost dispersal within the cluster. We use adaptive dynamics to investigate the evolution of dispersal, obtaining analytic results for monomorphic evolution and numerical results for the co-evolution of two dispersal strategies. A monomorphic population always evolves to a unique singular dispersal strategy, which may be an evolutionarily stable strategy or an evolutionary branching point. Evolutionary branching happens if the contrast between connectivities is sufficiently high and the solitary microsites are common. The dimorphic evolutionary singularity, when it exists, is always evolutionarily and convergence stable. The model exhibits both protected and unprotected dimorphisms of dispersal strategies, but the dimorphic singularity is always protected. Contrasting connectivities can thus maintain dispersal polymorphisms in temporally stable environments.
Subject: Adaptive dynamics
Dispersal polymorphism
Evolutionary branching
Kin competition
Patch connectivity
STRUCTURED METAPOPULATIONS
COMPETITIVE-EXCLUSION
DEPENDENT DISPERSAL
ADAPTIVE DYNAMICS
STABLE HABITATS
POPULATIONS
STRATEGIES
DISTANCE
FITNESS
MODELS
1181 Ecology, evolutionary biology
111 Mathematics
Referentgranskad: Ja
Användningsbegränsning: openAccess
Parallelpublicerad version: acceptedVersion


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