Fluctuation domains in adaptive evolution Journal Articles

abstract

• We derive an expression for the variation between parallel trajectories in phenotypic evolution, extending the well known result that predicts the mean evolutionary path in adaptive dynamics or quantitative genetics. We show how this expression gives rise to the notion of fluctuation domains-parts of the fitness landscape where the rate of evolution is very predictable (due to fluctuation dissipation) and parts where it is highly variable (due to fluctuation enhancement). These fluctuation domains are determined by the curvature of the fitness landscape. Regions of the fitness landscape with positive curvature, such as adaptive valleys or branching points, experience enhancement. Regions with negative curvature, such as adaptive peaks, experience dissipation. We explore these dynamics in the ecological scenarios of implicit and explicit competition for a limiting resource.

authors

• Boettiger, Carl
• Dushoff, Jonathan
• Weitz, Joshua S

status

• published 

publication date

• February 2010

has subject area

• 0501 Ecological Applications (FoR)
• 0602 Ecology (FoR)
• 0604 Genetics (FoR)
• Adaptation, Physiological (MeSH)
• Ecosystem (MeSH)
• Evolution, Molecular (MeSH)
• Evolutionary Biology (Science Metrix)
• Genetic Fitness (MeSH)
• Genetic Variation (MeSH)
• Genetics, Population (MeSH)
• Humans (MeSH)
• Models, Genetic (MeSH)
• Models, Statistical (MeSH)
• Mutation (MeSH)
• Phenotype (MeSH)
• Thermodynamics (MeSH)

published in

• Theoretical Population Biology  Journal

keywords

• Adaptation, Physiological
• Ecosystem
• Evolution, Molecular
• Genetic Fitness
• Genetic Variation
• Genetics, Population
• Humans
• Models, Genetic
• Models, Statistical
• Mutation
• Phenotype
• Thermodynamics

Digital Object Identifier (DOI)

• 10.1016/j.tpb.2009.10.003

PubMed ID

• 19843477

start page

• 6

end page

• 13

volume

• 77

issue

• 1