You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Speciation by Natural and Sexual Selection: Models and Experiments
Mark Kirkpatrick and Virginie Ravigné
The American Naturalist
Vol. 159, No. S3, THE ECOLOGICAL GENETICS OF SPECIATIONA Symposium Organized by Sara Via (March 2002), pp. S22-S35
Stable URL: http://www.jstor.org/stable/10.1086/338370
Page Count: 14
You can always find the topics here!Topics: Speciation, Assortative mating, Alleles, Evolution, Natural selection, Phenotypic traits, Sexual selection, Disruptive selection, Genetics, Population genetics
Were these topics helpful?See somethings inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
Abstract: A large number of mathematical models have been developed that show how natural and sexual selection can cause prezygotic isolation to evolve. This article attempts to unify this literature by identifying five major elements that determine the outcome of speciation caused by selection: a form of disruptive selection, a form of isolating mechanism (assortment or a mating preference), a way to transmit the force of disruptive selection to the isolating mechanism (direct selection or indirect selection), a genetic basis for increased isolation (a one‐ or two‐allele mechanism), and an initial condition (high or low initial divergence). We show that the geographical context of speciation (allopatry vs. sympatry) can be viewed as a form of assortative mating. These five elements appear to operate largely independently of each other and can be used to make generalizations about when speciation is most likely to happen. This provides a framework for interpreting results from laboratory experiments, which are found to agree generally with theoretical predictions about conditions that are favorable to the evolution of prezygotic isolation.
© 2002 by The University of Chicago.