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Evolution arrests invasions of cooperative populations

Kirill S. Korolev
doi: https://doi.org/10.1101/033902
Kirill S. Korolev
Department of Physics and Graduate Program in Bioinformatics, Boston University, Boston, Massachusetts 02215, USA*
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Abstract

Population expansions trigger many biomedical and ecological transitions, from tumor growth to invasions of non-native species. Although population spreading often selects for more invasive phenotypes, we show that this outcome is far from inevitable. In cooperative populations, mutations reducing dispersal have a competitive advantage. Such mutations then steadily accumulate at the expansion front bringing invasion to a halt. Our findings are a rare example of evolution driving the population into an unfavorable state and could lead to new strategies to combat unwelcome invaders. In addition, we obtain an exact analytical expression for the fitness advantage of mutants with different dispersal rates.

PACS numbers: 87.23.Kg, 05.60.Cd, 64.60.-i, 87.23.Cc

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted December 07, 2015.
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Evolution arrests invasions of cooperative populations
Kirill S. Korolev
bioRxiv 033902; doi: https://doi.org/10.1101/033902
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Evolution arrests invasions of cooperative populations
Kirill S. Korolev
bioRxiv 033902; doi: https://doi.org/10.1101/033902

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