Sex chromosome linked genetic variance and the evolution of sexual dimorphism of quantitative traits

Husby A, Schielzeth H, Forstmeier W, Gustafsson L, Qvarnström A (2013)
Evolution 67(3): 609-619.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Theory predicts that sex chromosome linkage should reduce intersexual genetic correlations thereby allowing the evolution of sexual dimorphism. Empirical evidence for sex linkage has come largely from crosses and few studies have examined how sexual dimorphism and sex linkage are related within outbred populations. Here, we use data on an array of different traits measured on over 10,000 individuals from two pedigreed populations of birds (collared flycatcher and zebra finch) to estimate the amount of sex-linked genetic variance (h2z). Of 17 traits examined, eight showed a nonzero h2z estimate but only four were significantly different from zero (wing patch size and tarsus length in collared flycatchers, wing length and beak color in zebra finches). We further tested how sexual dimorphism and the mode of selection operating on the trait relate to the proportion of sex-linked genetic variance. Sexually selected traits did not show higher h2z than morphological traits and there was only a weak positive relationship between h2z and sexual dimorphism. However, given the relative scarcity of empirical studies, it is premature to make conclusions about the role of sex chromosome linkage in the evolution of sexual dimorphism.
Stichworte
collared flycatcher; Animal model; quantitative genetics; sexual antagonism; sex linkage; sexual dimorphism; zebra finch
Erscheinungsjahr
2013
Zeitschriftentitel
Evolution
Band
67
Ausgabe
3
Seite(n)
609-619
ISSN
0014-3820
Page URI
https://pub.uni-bielefeld.de/record/2567151

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Husby A, Schielzeth H, Forstmeier W, Gustafsson L, Qvarnström A. Sex chromosome linked genetic variance and the evolution of sexual dimorphism of quantitative traits. Evolution. 2013;67(3):609-619.
Husby, A., Schielzeth, H., Forstmeier, W., Gustafsson, L., & Qvarnström, A. (2013). Sex chromosome linked genetic variance and the evolution of sexual dimorphism of quantitative traits. Evolution, 67(3), 609-619. doi:10.1111/j.1558-5646.2012.01806.x
Husby, A., Schielzeth, H., Forstmeier, W., Gustafsson, L., and Qvarnström, A. (2013). Sex chromosome linked genetic variance and the evolution of sexual dimorphism of quantitative traits. Evolution 67, 609-619.
Husby, A., et al., 2013. Sex chromosome linked genetic variance and the evolution of sexual dimorphism of quantitative traits. Evolution, 67(3), p 609-619.
A. Husby, et al., “Sex chromosome linked genetic variance and the evolution of sexual dimorphism of quantitative traits”, Evolution, vol. 67, 2013, pp. 609-619.
Husby, A., Schielzeth, H., Forstmeier, W., Gustafsson, L., Qvarnström, A.: Sex chromosome linked genetic variance and the evolution of sexual dimorphism of quantitative traits. Evolution. 67, 609-619 (2013).
Husby, Arild, Schielzeth, Holger, Forstmeier, Wolfgang, Gustafsson, Lars, and Qvarnström, Anna. “Sex chromosome linked genetic variance and the evolution of sexual dimorphism of quantitative traits”. Evolution 67.3 (2013): 609-619.
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Data from: Sex chromosome linked genetic variance and the evolution of sexual dimorphism of quantitative traits
Husby A, Schielzeth H, Forstmeier W, Gustafsson L, Qvarnström A (2012) : Dryad Digital Repository. doi:10.5061/DRYAD.451N7.

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