Evolution of dispersal under variable connectivity

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Pysyväisosoite

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

Lähdeviite

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

Julkaisun nimi: Evolution of dispersal under variable connectivity
Tekijä: Karisto, Petteri; Kisdi, Eva
Tekijän organisaatio: Department of Mathematics and Statistics
Päiväys: 2017-04-21
Kieli: eng
Sivumäärä: 14
Kuuluu julkaisusarjaan: Journal of Theoretical Biology
ISSN: 0022-5193
DOI-tunniste: https://doi.org/10.1016/j.jtbi.2016.11.007
URI: http://hdl.handle.net/10138/234479
Tiivistelmä: 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.
Avainsanat: 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
Vertaisarvioitu: Kyllä
Pääsyrajoitteet: openAccess
Rinnakkaistallennettu versio: acceptedVersion


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