Journal
JOURNAL OF EVOLUTIONARY BIOLOGY
Volume 24, Issue 9, Pages 1992-2001Publisher
WILEY
DOI: 10.1111/j.1420-9101.2011.02333.x
Keywords
disturbance; evolvability; fluctuating selection; genetic regulatory network; invasive species; mutational robustness
Categories
Funding
- Norwegian Research Council
- Leiv Eiriksson Mobility Grant
- U.S. National Science Foundation
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Can a history of phenotypic plasticity increase the rate of adaptation to a new environment? Theory suggests it can be through two different mechanisms. Phenotypically plastic organisms can adapt rapidly to new environments through genetic assimilation, or the fluctuating environments that result in phenotypic plasticity can produce evolvable genetic architectures. In this article, I studied a model of a gene regulatory network that determined a phenotypic character in one population selected for phenotypic plasticity and a second population in a constant environment. A history of phenotypic plasticity increased the rate of adaptation in a new environment, but the amount of this increase was dependent on the strength of selection in the original environment. Phenotypic variance in the original environment predicted the adaptive capacity of the trait within, but not between, plastic and nonplastic populations. These results have implications for invasive species and ecological studies of rapid adaptation.
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