Data from: How stabilizing selection and nongenetic inheritance combine to shape the evolution of phenotypic plasticity
Levis, Nicholas A., University of North Carolina
Pfennig, David W., University of North Carolina
Published Apr 05, 2019 on Dryad.
Cite this dataset
Levis, Nicholas A.; Pfennig, David W. (2019). Data from: How stabilizing selection and nongenetic inheritance combine to shape the evolution of phenotypic plasticity [Dataset]. Dryad. https://doi.org/10.5061/dryad.rm041kb
Relatively little is known about whether and how nongenetic inheritance interacts with selection to impact the evolution of phenotypic plasticity. Here, we empirically evaluated how stabilizing selection and a common form of nongenetic inheritance––maternal environmental effects––jointly influence the evolution of phenotypic plasticity in natural populations of spadefoot toads. We compared populations that previous field work has shown to have evolved conspicuous plasticity in resource-use phenotypes (‘resource polyphenism’) with those that, owing to stabilizing selection favouring a narrower range of such phenotypes, appear to have lost this plasticity. We show that: 1) this apparent loss of plasticity in nature reflects a condition-dependent maternal effect and not a genetic loss of plasticity; i.e., ‘genetic assimilation’, and 2) this plasticity is not costly. By shielding non-costly plasticity from selection, nongenetic inheritance generally, and maternal effects specifically, can preclude genetic assimilation from occurring and consequently impede adaptive (genetic) evolution.
Lab morphology data
Data from the laboratory portion of the experiment
Variation in field measurements
Coefficients of variation for field data
National Science Foundation, Award: DEB-1019479 and DEB-1643239