Evolutionary Stability of Jointly Evolving Traits in Subdivided Populations

The American Naturalist
Charles MullonLaurent Lehmann


The evolutionary stability of quantitative traits depends on whether a population can resist invasion by any mutant. While uninvadability is well understood in well-mixed populations, it is much less so in subdivided populations when multiple traits evolve jointly. Here, we investigate whether a spatially subdivided population at a monomorphic equilibrium for multiple traits can withstand invasion by any mutant or is subject to diversifying selection. Our model also explores the correlations among traits arising from diversifying selection and how they depend on relatedness due to limited dispersal. We find that selection tends to favor a positive (negative) correlation between two traits when the selective effects of one trait on relatedness is positively (negatively) correlated to the indirect fitness effects of the other trait. We study the evolution of traits for which this matters: dispersal that decreases relatedness and helping that has positive indirect fitness effects. We find that when dispersal cost is low and the benefits of helping accelerate faster than its costs, selection leads to the coexistence of mobile defectors and sessile helpers. Otherwise, the population evolves to a monomorphic state with intermediate h...Continue Reading

Associated Datasets


Jun 11, 2016·Evolution; International Journal of Organic Evolution·Laurent LehmannJeremy Van Cleve
Jul 5, 2019·Journal of Evolutionary Biology·Asher LeeksS A West
Jul 21, 2019·Evolution; International Journal of Organic Evolution·Charles Mullon, Laurent Lehmann
Dec 6, 2017·Nature Ecology & Evolution·Charles MullonLaurent Lehmann
Dec 31, 2019·Ecology Letters·Jeremy Field, Hiroshi Toyoizumi
Jul 26, 2017·Scientific Reports·Miguel Dos Santos, Jorge Peña
Sep 20, 2019·Ecology and Evolution·Barbora Trubenová, Reinmar Hager

Related Concepts

Haploid Cell
Life Cycle Stages
Genetic Fitness
Enzyme Stability
Population Group
Biological Evolution
Selection, Genetic
EAF2 gene

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