Measuring natural and sexual selection on breeding values of male display traits in Drosophila serrata

Skroblin, A. and Blows, M. W. (2006) Measuring natural and sexual selection on breeding values of male display traits in Drosophila serrata. Journal of Evolutionary Biology, 19 1: 35-41. doi:10.1111/j.1420-9101.2005.00986.x


Author Skroblin, A.
Blows, M. W.
Title Measuring natural and sexual selection on breeding values of male display traits in Drosophila serrata
Journal name Journal of Evolutionary Biology   Check publisher's open access policy
ISSN 1010-061X
Publication date 2006-01-01
Sub-type Article (original research)
DOI 10.1111/j.1420-9101.2005.00986.x
Volume 19
Issue 1
Start page 35
End page 41
Total pages 7
Place of publication Oxford
Publisher Blackwell Publishing
Language eng
Subject C1
270207 Quantitative Genetics
780105 Biological sciences
Abstract Fundamental to many theories of sexual selection is the expectation that sexual traits, which males use in an attempt to increase mating success, confer costs as well as benefits to individual males. Although evolution of exaggerated male traits is predicted to be halted, by costs applied by natural selection, there is a lack of empirical work devoted to quantitatively establishing whether natural selection opposes sexual selection generated by the preferences of females. In this study, we quantified natural and sexual selection gradients on breeding values for cuticular hydrocarbon (CHC) components of male contact pheromones in Drosophila serrata. As male sexual traits may often be environmentally condition dependent, breeding values were used in the selection analysis to remove the possibility of environmental correlations between the measured trait and fitness biasing estimates of selection. The direction of natural selection was found to oppose sexual selection on a subset of CHCs examined. Opposing natural and sexual selection suggests that further evolution of the male pheromone may in part be limited by costs associated with attractive male CHC blends.
Keyword Breeding Values
Costly Mating Preference
Cuticular Hydrocarbons
Drosophila
Natural Selection
Selection Gradients
Sexual Selection
Ecology
Evolutionary Biology
Genetics & Heredity
Genetic Correlation
Mate Recognition
Survival
Melanogaster
Benefits
Fitness
Choice
Costs
Q-Index Code C1

 
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Created: Wed, 15 Aug 2007, 18:54:54 EST