Population ecology, nonlinear dynamics, and social evolution. I. Associations among nonrelatives

The American Naturalist
Leticia AvilésAsher D Cutter

Abstract

Using an individual-based and genetically explicit simulation model, we explore the evolution of sociality within a population-ecology and nonlinear-dynamics framework. Assuming that individual fitness is a unimodal function of group size and that cooperation may carry a relative fitness cost, we consider the evolution of one-generation breeding associations among nonrelatives. We explore how parameters such as the intrinsic rate of growth and group and global carrying capacities may influence social evolution and how social evolution may, in turn, influence and be influenced by emerging group-level and population-wide dynamics. We find that group living and cooperation evolve under a wide range of parameter values, even when cooperation is costly and the interactions can be defined as altruistic. Greater levels of cooperation, however, did evolve when cooperation carried a low or no relative fitness cost. Larger group carrying capacities allowed the evolution of larger groups but also resulted in lower cooperative tendencies. When the intrinsic rate of growth was not too small and control of the global population size was density dependent, the evolution of large cooperative tendencies resulted in dynamically unstable groups a...Continue Reading

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Citations

Dec 4, 2003·Theoretical Population Biology·Samuel Bowles, Herbert Gintis
May 17, 2006·Trends in Ecology & Evolution·David Sloan Wilson
Nov 10, 2013·PloS One·Ferenc MolnárGyorgy Korniss
Oct 17, 2002·Proceedings of the National Academy of Sciences of the United States of America·Leticia Avilés
Jul 28, 2004·The American Naturalist·Leticia AvilésAsher D Cutter
Jun 5, 2013·Evolution; International Journal of Organic Evolution·Omar Tonsi EldakarWilliam Wallace Driscoll
Jan 26, 2008·The Quarterly Review of Biology·David Sloan Wilson, Edward O Wilson
Mar 17, 2010·Journal of Theoretical Biology·Matthijs van VeelenLeticia Avilés
Sep 12, 2007·Molecular Ecology·Patrick Abbot, Vikram Chhatre
Jun 8, 2012·Evolution; International Journal of Organic Evolution·Thomas G PlattJames D Bever
Feb 15, 2015·Journal of Theoretical Biology·Peter A Corning, Eörs Szathmáry
Jun 14, 2006·Journal of Theoretical Biology·Matthijs van Veelen
Jul 31, 2012·Journal of Theoretical Biology·Jessica PurcellLeticia Avilés
Oct 10, 2012·Journal of Theoretical Biology·Etsuko NonakaÅke Brännström
Jun 4, 2016·Theoretical Population Biology·Chaitanya S Gokhale, Christoph Hauert
May 21, 2020·Behavioral Ecology and Sociobiology·Brendan L McEwenJonathan N Pruitt

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