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SelectionThe Mechanism of Evolution$
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Graham Bell

Print publication date: 2007

Print ISBN-13: 9780198569725

Published to Oxford Scholarship Online: May 2008

DOI: 10.1093/acprof:oso/9780198569725.001.0001

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Social selection

Social selection

(p.331) CHAPTER 10 Social selection

Graham Bell

Oxford University Press

Selection is often generated by interaction with other organisms: neighbours, partners, or antagonists. The force and direction of selection in these social contexts is very generally influenced by the density and composition of the population. It may result in some degree of cooperation or helpfulness, rather than unrestricted competition among individuals. The first section here is called Selection within a single uniform population: density-dependent selection and details density regulation; density-dependent fitness; the principle of frugality; resource competition in continuous culture; r-K selection; r-K selection experiments; and selection in seasonal environments. The second section is called Selection within a single diverse population: frequency-dependent selection and describes GxG; frequency-dependent fitness; and also frequency-dependence in complex environments. The third section is about social behaviour and describes the phenotypic theory of aggression and exploitation; cross-feeding; selfish cooperation; the prisoners' dilemmas; intransitive social interactions; and time-lagged social interactions. The final section is called Kin selection and group selection and describes kin selection; kin proximity and kin choice; spite; group selection in structured populations; productivity and diversity; artificial group selection; and cultural evolution.

Keywords:   frequency-dependent selection, density-dependent selection, r-K selection, frugality, altruism, hawk-dove game, snowdrift game, prisoner's dilemma, evolutionary game theory, kin selection

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