SPECIES SELECTION AND THE MACROEVOLUTION OF CORAL COLONIALITY AND PHOTOSYMBIOSIS
Version of Record online: 9 APR 2013
© 2013 The Author(s). Evolution © 2013 The Society for the Study of Evolution.
Volume 67, Issue 6, pages 1607–1621, June 2013
How to Cite
Simpson, C. (2013), SPECIES SELECTION AND THE MACROEVOLUTION OF CORAL COLONIALITY AND PHOTOSYMBIOSIS. Evolution, 67: 1607–1621. doi: 10.1111/evo.12083
- Issue online: 4 JUN 2013
- Version of Record online: 9 APR 2013
- Accepted manuscript online: 23 FEB 2013 09:34AM EST
- Manuscript Accepted: 2 FEB 2013
- Manuscript Received: 29 JUN 2012
- Deutsche Forschungsgemeinschaft. Grant Number: KI 806/7–1
- National Evolutionary Synthesis Center
- multilevel selection;
- multivariate selection;
Differences in the relative diversification rates of species with variant traits are known as species selection. Species selection can produce a macroevolutionary change in the frequencies of traits by changing the relative number of species possessing each trait over time. But species selection is not the only process that can change the frequencies of traits, phyletic microevolution of traits within species and phylogenetic trait evolution among species, the tempo and mode of microevolution can also change trait frequencies. Species selection, phylogenetic, and phyletic processes can all contribute to large-scale trends, reinforcing or canceling each other out. Even more complex interactions among macroevolutionary processes are possible when multiple covarying traits are involved. Here I present a multilevel macroevolutionary framework that is useful for understanding how macroevolutionary processes interact. It is useful for empirical studies using fossils, molecular phylogenies, or both. I illustrate the framework with the macroevolution of coloniality and photosymbiosis in scleractinian corals using a time-calibrated molecular phylogeny. I find that standing phylogenetic variation in coloniality and photosymbiosis deflects the direction of macroevolution from the vector of species selection. Variation in these traits constrains species selection and results in a 200 million year macroevolutionary equilibrium.