| Food-web formation with recursive evolutionary branching. | |
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MedLine Citation:
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PMID: 15996683 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A reaction-diffusion model describing the evolutionary dynamics of a food-web was constructed. In this model, predator-prey relationships among organisms were determined by their position in a two-dimensional phenotype space defined by two traits: as prey and as predator. The mutation process is expressed with a diffusion process of biomass in the phenotype space. Numerical simulation of this model showed co-evolutionary dynamics of isolated phenotypic clusters, including various types of evolutionary branching, which were classified into branching as prey, branching as predators, and co-evolutionary branching of both prey and predators. A complex food-web develops with recursive evolutionary branching from a single phenotypic cluster. Biodiversity peaks at the medium strength of the predator-prey interaction, where the food-web is maintained at medium biomass by a balanced frequency between evolutionary branching and extinction. |
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Authors:
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Hiroshi C Ito; Takashi Ikegami |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2005-07-05 |
Journal Detail:
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Title: Journal of theoretical biology Volume: 238 ISSN: 0022-5193 ISO Abbreviation: J. Theor. Biol. Publication Date: 2006 Jan |
Date Detail:
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Created Date: 2005-12-05 Completed Date: 2006-05-03 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0376342 Medline TA: J Theor Biol Country: England |
Other Details:
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Languages: eng Pagination: 1-10 Citation Subset: IM |
Affiliation:
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The Graduate School of Arts and Sciences, University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan. itoh9@dolphin.c.u-tokyo.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Biodiversity Biomass Computer Simulation* Ecology* Evolution* Food Chain* Models, Biological Models, Statistical* Phenotype Predatory Behavior* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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