Evolution of Competitive Ability: An Adaptation Speed vs. Accuracy Tradeoff Rooted in Gene Network Size

dc.creatorMalcom, Jacob W.en
dc.date.accessioned2013-05-06T15:42:15Zen
dc.date.available2013-05-06T15:42:15Zen
dc.date.issued2011-04-25en
dc.description.abstractEcologists have increasingly come to understand that evolutionary change on short time-scales can alter ecological dynamics (and vice-versa), and this idea is being incorporated into community ecology research programs. Previous research has suggested that the size and topology of the gene network underlying a quantitative trait should constrain or facilitate adaptation and thereby alter population dynamics. Here, I consider a scenario in which two species with different genetic architectures compete and evolve in fluctuating environments. An important trade-off emerges between adaptive accuracy and adaptive speed, driven by the size of the gene network underlying the ecologically-critical trait and the rate of environmental change. Smaller, scale-free networks confer a competitive advantage in rapidly-changing environments, but larger networks permit increased adaptive accuracy when environmental change is sufficiently slow to allow a species time to adapt. As the differences in network characteristics increase, the time-to-resolution of competition decreases. These results augment and refine previous conclusions about the ecological implications of the genetic architecture of quantitative traits, emphasizing a role of adaptive accuracy. Along with previous work, in particular that considering the role of gene network connectivity, these results provide a set of expectations for what we may observe as the field of ecological genomics develops.en
dc.description.departmentBiological Sciences, School ofen
dc.description.sponsorshipThis work was supported in part by a start-up grant from the University of Texas at Austin; remaining costs were borne by the author. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.en
dc.identifier.citationMalcom JW (2011) Evolution of Competitive Ability: An Adaptation Speed vs. Accuracy Tradeoff Rooted in Gene Network Size. PLoS ONE 6(4): e14799. doi:10.1371/journal.pone.0014799en
dc.identifier.doi10.1371/journal.pone.0014799en
dc.identifier.urihttp://hdl.handle.net/2152/20089en
dc.language.isoengen
dc.publisherPublic Library of Scienceen
dc.rightsAttribution 3.0 United Statesen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/en
dc.subjectCommunity ecologyen
dc.subjectEvolutionary ecologyen
dc.subjectEvolutionary geneticsen
dc.subjectGene regulatory networksen
dc.subjectGenetic networksen
dc.subjectGenome evolutionen
dc.subjectMutationen
dc.subjectPhenotypesen
dc.titleEvolution of Competitive Ability: An Adaptation Speed vs. Accuracy Tradeoff Rooted in Gene Network Sizeen
dc.typeArticleen

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