Selection in ephemeral networks.
A model of "ephemeral" population structure is presented that applies not only to biological systems in which discrete groups form but also to networks without group boundaries. The evolution of altruistic behaviors is discussed. Nonrandom interaction and nonlinear fitness structures are modeled; together, these factors can produce stable polymorphisms of altruistic and selfish types, as well as bistability. Empirical applications of the model may be found in microbes, marine invertebrates, annual plants, and other organisms.
Godfrey-Smith
Peter
P
Department of Philosophy, Harvard University, Cambridge, Massachusetts 02138, USA.
Kerr
Benjamin
B
D000533:Altruism; D005075:Biological Evolution; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D011157:Population Dynamics; D012641:Selection, Genetic