Project: Comparative population genomics of coastal marine invertebrates
Taxon: various sea stars, limpets, snails, urchins, crustaceans
People: Dawson lab, University of California, Merced.
Place: Northeastern Pacific
Funding: National Science Foundation (OCE-2224698)
Theory predicts that differences in phylogeographic structure between species should be related to differences in life history, environment, and evolutionary time. Reviews of empirical studies suggest sometimes complex interactions and possibly a preponderance of exceptions to the predicted relationship that greater population genetic differentiation results from lower dispersal potential, as a function of life history. We apply a rigorous analytical framework, which controls for effects of environment and time, to test the hypothesis that contrasts in population genetic differentiation are proportional to contrasts in life history traits.
References
Dawson, M.N., & W.M. Hamner. 2008. A biophysical perspective on dispersal and the geography of evolution in marine and terrestrial systems. Journal of the Royal Society, Interface 5:135–150.
Dawson, M.N, C.G. Hays, R.K. Grosberg, & P.T. Raimondi. 2014. Dispersal potential and population genetic structure in the marine intertidal of the eastern North Pacific. Ecological Monographs 84:435–456. http://dx.doi.org/10.1890/13-0871.1
Schiebelhut, L.M. & M.N Dawson. 2018. Differences in life-history and dispersal potential correlate with differences in population differentiation in terrestrial and marine environments. Journal of Biogeography 45:2427–2441. https://onlinelibrary.wiley.com/doi/abs/10.1111/jbi.13437
Schiebelhut, L.M., B. Gaylord, R.K. Grosberg, L.J. Jurgens, & M.N Dawson. 2022. Species’ attributes predict the relative magnitude of ecological and genetic recovery following mass mortality. Molecular Ecology 31:5714–5728. https://doi.org/10.1111/mec.16707