| Complexity and diversity. | |
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MedLine Citation:
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PMID: 20413499 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The mechanisms for the origin and maintenance of biological diversity are not fully understood. It is known that frequency-dependent selection, generating advantages for rare types, can maintain genetic variation and lead to speciation, but in models with simple phenotypes (that is, low-dimensional phenotype spaces), frequency dependence needs to be strong to generate diversity. However, we show that if the ecological properties of an organism are determined by multiple traits with complex interactions, the conditions needed for frequency-dependent selection to generate diversity are relaxed to the point where they are easily satisfied in high-dimensional phenotype spaces. Mathematically, this phenomenon is reflected in properties of eigenvalues of quadratic forms. Because all living organisms have at least hundreds of phenotypes, this casts the potential importance of frequency dependence for the origin and maintenance of diversity in a new light. |
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Authors:
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Michael Doebeli; Iaroslav Ispolatov |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Science (New York, N.Y.) Volume: 328 ISSN: 1095-9203 ISO Abbreviation: Science Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-04-23 Completed Date: 2010-05-04 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0404511 Medline TA: Science Country: United States |
Other Details:
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Languages: eng Pagination: 494-7 Citation Subset: IM |
Affiliation:
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Department of Zoology, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada. doebeli@zoology.ubc.ca |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Alleles Animals Biodiversity* Birds / anatomy & histology, genetics Competitive Behavior Ecosystem Genetic Speciation* Genetic Variation* Mathematical Concepts Models, Genetic Normal Distribution Phenotype Selection, Genetic* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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