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Frequency-dependent selection in a periodic environment

✍ Scribed by Robert Forster; Claus O. Wilke

Publisher: Elsevier Science
Year: 2007
Tongue: English
Weight: 384 KB
Volume: 381
Category: Article
ISSN: 0378-4371
DOI: 10.1016/j.physa.2007.03.017

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✦ Synopsis

We examine the action of natural selection in a periodically changing environment where two competing strains are specialists respectively for each environmental state. When the relative fitness of the strains is subject to a very general class of frequency-dependent selection, we show that coexistence rather than extinction is the likely outcome. This coexistence may be a stable periodic equilibrium, stable limit cycles of varying lengths, or be deterministically chaotic. Our model is applicable to the population dynamics commonly found in many types of viruses.

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