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Competition and dispersal in Pseudomonas aeruginosa

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Taylor, T. and Buckling, A. (2010) Competition and dispersal in Pseudomonas aeruginosa. The American Naturalist, 176 (1). pp. 83-89. ISSN 0003-0147

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To link to this item DOI: 10.1086/652995

Abstract/Summary

Dispersal plays a crucial role in a range of evolutionary and ecological processes; hence there is strong motivation to understand its evolution. One key prediction is that the relative benefits of dispersal should be greater when dispersing away from close relatives, because in this case dispersal has the additional benefit of alleviating competition with individuals who share the same dispersal alleles. We tested this prediction for the first time using experimental populations of the opportunistic pathogen Pseudomonas aeruginosa. We measured the fitness of isogenic genotypes that differed only in their dispersal behaviors in both clonal and mixed populations. Consistent with theory, the benefit of dispersal was much higher in clonal populations, and this benefit decreased with increasing growth rate costs associated with dispersal.

Item Type:Article
Refereed:Yes
Divisions:No Reading authors. Back catalogue items
Faculty of Life Sciences > School of Biological Sciences > Ecology and Evolutionary Biology
ID Code:39014
Uncontrolled Keywords:kin selection, experimental evolution, bacteria, virulence, type IV pili.
Publisher:The American Society of Naturalists

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