The authors contributed equally to this work.
PERSISTENCE OF WITHIN-SPECIES LINEAGES: A NEGLECTED CONTROL OF SPECIATION RATES
Article first published online: 11 DEC 2013
© 2013 The Author(s). Evolution © 2013 The Society for the Study of Evolution.
Volume 68, Issue 4, pages 923–934, April 2014
How to Cite
Dynesius, M. and Jansson, R. (2014), PERSISTENCE OF WITHIN-SPECIES LINEAGES: A NEGLECTED CONTROL OF SPECIATION RATES. Evolution, 68: 923–934. doi: 10.1111/evo.12316
- Issue published online: 1 APR 2014
- Article first published online: 11 DEC 2013
- Manuscript Accepted: 7 NOV 2013
- Manuscript Received: 11 MAR 2013
- Swedish Research Council Formas
- speciation speed;
- waiting time to speciation
We present a framework distinguishing three principal controls of speciation rate: rate of splitting, level of persistence, and length of speciation duration. We contend that discussions on diversification become clearer in the light of this framework, because speciation rate variation could be attributed to any of these controls. In particular, we claim that the role of persistence of within-species lineages in controlling speciation rates has been greatly underappreciated. More emphasis on the persistence control would change expectations of the role of several biological traits and environmental factors, because they may drive speciation rate in one direction through the persistence control and in the opposite direction through the other two controls. Traits and environments have been little studied regarding their influence on speciation rate through the persistence control, with climatic fluctuations being a relatively well-studied exception. Considering the recent advances in genomic and phylogenetic analysis, we think that the time is ripe for applying the framework in empirical research. Variation among clades and areas (and thus among traits and environments) in the importance of the three rate controls could be addressed for example by dating splitting events, detecting within-species lineages, and scanning genomes for evidence of divergent selection.