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.
A Test and Review of the Role of Effective Population Size on Experimental Sexual Selection Patterns
Rhonda R. Snook, Lena Briistle and Jon Slate
Vol. 63, No. 7 (Jul., 2009), pp. 1923-1933
Published by: Society for the Study of Evolution
Stable URL: http://www.jstor.org/stable/40306266
Page Count: 11
You can always find the topics here!Topics: Sexual selection, Evolution, Genetics, Population estimates, Population size, Population genetics, Estimation methods, Female animals, Genetic diversity, X linked genes
Were these topics helpful?See something 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
Experimental evolution, particularly experimental sexual selection in which sexual selection strength is manipulated by altering the mating system, is an increasingly popular method for testing evolutionary theory. Concerns have arisen regarding genetic diversity variation across experimental treatments: differences in the number and sex ratio of breeders (effective population size; $N_e $ ) and the potential for genetic hitchhiking, both of which may cause different levels of genetic variation between treatments. Such differences may affect the selection response and confound interpretation of results. Here we use both census-based estimators and molecular marker-based estimates to empirically test how experimental evolution of sexual selection in Drosophila pseudoobscura impacts N e and autosomal genetic diversity. We also consider effects of treatment on X-linked A/e s, which have previously been ignored. Molecular autosomal marker-based estimators indicate that neither N e nor genetic diversity differs between treatments experiencing different sexual selection intensities; thus observed evolutionary responses reflect selection rather than any confounding effects of experimental design. Given the increasing number of studies on experimental sexual selection, we also review the census $N_e S$ of other experimental systems, calculate X-linked $N_e S$ and compare how different studies have dealt with the issues of inbreeding, genetic drift, and genetic hitchhiking to help inform future designs.
Evolution © 2009 Society for the Study of Evolution