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.
The Evolution of Reproductive Isolation as a Correlated Character Under Sympatric Conditions: Experimental Evidence
William R. Rice and George W. Salt
Vol. 44, No. 5 (Aug., 1990), pp. 1140-1152
Published by: Society for the Study of Evolution
Stable URL: http://www.jstor.org/stable/2409278
Page Count: 13
You can always find the topics here!Topics: Habitat preferences, Habitat selection, Speciation, Reproductive isolation, Mazes, Habitats, Disruptive selection, Evolution, Species, Gene flow
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
A set of experiments is described that tests the general hypothesis that sympatric speciation is genetically feasible whenever reproductive isolation evolves indirectly as a correlated character. We specifically test the hypothesis that disruptive selection on habitat preference can lead to sympatric speciation when individuals mate locally within their selected habitat. Drosophila melanogaster was used as a model system. A 35-generation experiment using a complex habitat maze led to complete reproductive isolation between subpopulations using different spatiotemporal habitats. The reproductive isolation that developed over the course of the experiment was a result of offspring returning to mate in the habitat type selected by their parents, i.e., a gradual breakdown in migration between habitats.
Evolution © 1990 Society for the Study of Evolution