Allelopathy in Spatially Distributed Populations

✍ Scribed by Rick Durrett; Simon Levin

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 486 KB
• Volume: 185
• Category: Article
• ISSN: 0022-5193
• DOI: 10.1006/jtbi.1996.0292

✦ Synopsis

In a homogeneously mixing population of E. coli, colicin-producing and colicin-sensitive strategies both may be evolutionarily stable for certain parameter ranges, with the outcome of competition determined by initial conditions. In contrast, in a spatially-structured population, there is a unique ESS for any given set of parameters; the outcome is determined by how effective allelopathy is in relation to its costs. Furthermore, in a spatially-structured environment, a dynamic equilibrium may be sustained among a colicin-sensitive type, a high colicin-producing type, and a "cheater" that expends less on colicin production but is resistant. Copyright 1997 Academic Press Limited