Abstract
Group selection is easily observed when spatial group structure is imposed on a population. In fact, spatial structure is just a means of providing assortative interactions such that the benefits of cooperating are delivered to other cooperators more than to selfish individuals. In principle, assortative interactions could be supported by individually adapted traits without physical grouping. But this possibility seems to be ruled-out because any ’marker’ that cooperators used for this purpose could be adopted by selfish individuals also. However, here we show that stable assortative marking can evolve when sub-populations at different evolutionarily stable strategies (ESSs) are brought into contact. Interestingly, if they are brought into contact too quickly, individual selection causes loss of behavioural diversity before assortative markers have a chance to evolve. But if they are brought into contact slowly, moderate initial mixing between sub-populations produces a pressure to evolve traits that facilitate assortative interactions. Once assortative interactions have become established, group competition between the two ESSs is facilitated without any spatial group structure. This process thus illustrates conditions where individual selection canalises groups that are initially spatially defined into stable groups that compete without the need for continued spatial separation.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Sober, E., Wilson, D.S.: Unto others: the evolution of psychology and unselfish behavior. Harvard University Press, Cambridge (1998)
Dawkins, R.: The Selfish Gene. Oxford University Press, Oxford (1976)
Maynard Smith, J.: Evolution and the Theory of Games. Cambridge University Press, Cambridge (1982)
Wilson, D.S., Sober, E.: Reintroducing group selection to the human behavioral sciences. Behavioral and Brain Sciences 17(4), 585–654 (1994)
Wilson, D.S.: A theory of group selection. PNAS 72(1), 143–146 (1975)
Powers, S.T., Watson, R.A.: Evolution of individual group size preferences can increase group-level selection and cooperation. In: Proceedings of the 10th European Conference on Artificial Life (2009) (to appear)
Wilson, D.S.: Complex interactions in metacommunities, with implications for biodiversity and higher levels of selection. Ecology 73, 1984–2000 (1992)
Boyd, R., Richerson, P.J.: Group Selection among Alternative evolutionarily Stable Strategies. J. Theor. Biol. 145, 331–342 (1990)
McElreath, R., Boyd, R., Richerson, P.J.: Shared norms and the evolution of ethnic markers. Current Anthropology 44(1), 122–129 (2003)
Boyd, R., Richerson, P.J.: Culture and the Evolutionary Process. University of Chicago Press, Chicago (1985)
Wilson, D.S., Dugatkin, L.A.: Group selection and assortative interactions. Am. Nat. 149, 336–351 (1997)
Powers, S.T., Mills, R., Penn, A.S., Watson, R.A.: Social Environment Construction Provides an Adaptive Explanation for New Levels of Individuality. In: Proceedings of ECAL 2009 Workshop on Levels of Selection and Individuality in Evolution: Conceptual Issues and the Role of Artificial Life Models (2009)
Mills, R., Watson, R.A.: Symbiosis enables the evolution of rare complexes in structured environments. In: Proceedings of the 10th European Conference on Artificial Life (2009) (to appear)
Watson, R.A., Palmius, N., Mills, R., Powers, S.T., Penn, A.S.: Can selfish symbioses effect higher-level selection? In: Proceedings of the 10th European Conference on Artificial Life (2009) (to appear)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Snowdon, J.R., Powers, S.T., Watson, R.A. (2011). Moderate Contact between Sub-populations Promotes Evolved Assortativity Enabling Group Selection. In: Kampis, G., Karsai, I., Szathmáry, E. (eds) Advances in Artificial Life. Darwin Meets von Neumann. ECAL 2009. Lecture Notes in Computer Science(), vol 5778. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-21314-4_6
Download citation
DOI: https://doi.org/10.1007/978-3-642-21314-4_6
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-21313-7
Online ISBN: 978-3-642-21314-4
eBook Packages: Computer ScienceComputer Science (R0)