Exploring complex fitness surfaces: Multiple ornamentation and polymorphism in male guppies

Blows, Mark W., Brooks, Robert and Kraft, Peter G. (2003) Exploring complex fitness surfaces: Multiple ornamentation and polymorphism in male guppies. Evolution, 57 7: 1622-1630. doi:10.1554/02-507


Author Blows, Mark W.
Brooks, Robert
Kraft, Peter G.
Title Exploring complex fitness surfaces: Multiple ornamentation and polymorphism in male guppies
Journal name Evolution   Check publisher's open access policy
ISSN 0014-3820
Publication date 2003-07-01
Sub-type Article (original research)
DOI 10.1554/02-507
Volume 57
Issue 7
Start page 1622
End page 1630
Total pages 9
Place of publication Lawrence, KS
Publisher Society for the Study of Evolution
Language eng
Subject C1
270799 Ecology and Evolution not elsewhere classified
780105 Biological sciences
Abstract The sexual ornamentation used by male guppies to attract females comprises many components, each of which varies considerably among males. Although natural and sexual selection have been shown to contribute to divergence among populations in male sexual ornaments, the role of sexual selection in maintaining polymorphism within populations is less clear. We used both parametric quadratic regression and nonparametric projection pursuit regression techniques to reveal the major axes of non-linear sexual selection on male ornaments. We visualized the fitness surfaces defined by these axes using thin-plate splines to allow a direct comparison of the two methodologies. Identification of the major axes of selection and their visualization was critical in determining the form and strength of nonlinear selection. Both types of analysis revealed fitness surfaces comprising three peaks, suggesting that there is more than one way to make an attractive guppy. Disruptive selection may be an important process underlying the presence of multiple sexual ornaments and may contribute to the maintenance of the high levels of polymorphism in male sexual ornaments found in guppy populations.
Keyword Ecology
Evolutionary Biology
Genetics & Heredity
Disruptive Selection
Nonlinear Selection
Polymorphism
Projection Pursuit Regression
Quadratic Response Surface
Selection Analysis
Sexual Selection
Poecilia-reticulata
Natural-selection
Color Patterns
Female Choice
Male Traits
Population
Preferences
Resistance
Evolution
Q-Index Code C1
Additional Notes DOI: 10.1111/j.0014-3820.2003.tb00369.x

 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 119 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Created: Wed, 15 Aug 2007, 05:06:18 EST