- THIS ARTICLE
- Full Text (PDF)
- Alert me when this article is cited
- Alert me if a correction is posted
- SERVICES
- Similar articles in this journal
- Similar articles in PubMed
- Alert me to new issues of the journal
- Download to citation manager
- Reprints & Permissions
- CITING ARTICLES
- Citing Articles via HighWire
- Citing Articles via Google Scholar
- GOOGLE SCHOLAR
- Articles by Mallet, J.
- Articles by Barton, N.
- Search for Related Content
- PUBMED
- PubMed Citation
- Articles by Mallet, J.
- Articles by Barton, N.
Genetics, Vol 122, 967-976, Copyright © 1989
INVESTIGATIONS |
Inference From Clines Stabilized by Frequency-Dependent Selection
J. Mallet and N. Barton
Department of Entomology, Mississippi State University, Mississippi State, Mississippi 39762
Frequency-dependent selection against rare forms can maintain clines. For weak selection, s, in simple linear models of frequency-dependence, single locus clines are stabilized with a maximum slope of between {complex}s/{complex}8 {sigma} and {complex}s/{complex}12 {delta}, where {sigma} is the dispersal distance. These clines are similar to those maintained by heterozygote disadvantage. Using computer simulations, the weak-selection analytical results are extended to higher selection pressures with up to three unlinked genes. Graphs are used to display the effect of selection, migration, dominance, and number of loci on cline widths, speeds of cline movements, two-way gametic correlations (``linkage disequilibria''), and heterozygote deficits. The effects of changing the order of reproduction, migration, and selection, are also briefly explored. Epistasis can also maintain tension zones. We show that epistatic selection is similar in its effects to frequency-dependent selection, except that the disequilibria produced in the zone will be higher for a given level of selection. If selection consists of a mixture of frequency-dependence and epistasis, as is likely in nature, the error made in estimating selection is usually less than twofold. From the graphs, selection and migration can be estimated using knowledge of the dominance and number of genes, of gene frequences and of gametic correlations from a hybrid zone.
This article has been cited by other articles:
 |
|
 |
|
  G. M. Langham Rufous-tailed jacamars and aposematic butterflies: do older birds attack novel prey? Behav. Ecol., March 1, 2006; 17(2): 285 - 290. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 V. Laurent, M. Voisin, and S. Planes Genetic Clines in the Bay of Biscay Provide Estimates of Migration for Sardina pilchardus J. Hered., January 1, 2006; 97(1): 81 - 88. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 T. Lenormand, T. Guillemaud, D. Bourguet, and M. Raymond Evaluating Gene Flow Using Selected Markers: A Case Study Genetics, July 1, 1998; 149(3): 1383 - 1392. [Abstract] [Full Text] [PDF]
|
|