Sex‐linked inheritance, genetic correlations and sexual dimorphism in three melanin‐based colour traits in the barn owl

Roulin, Alexandre; Jensen, Henrik

doi:10.1111/jeb.12596

Cited by 31 publications

(48 citation statements)

References 75 publications

(117 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The moderate but significant heritabilities presented here are consistent with previous estimates in colour patches of blue tits (Hadfield and Owens, 2006) and great tits (Evans and Sheldon, 2012), yet they are much smaller than heritabilities associated with the sizes of melanin and white colour patches in other species (ranging from 0.28 to 0.90, see, for example, Saino et al , 2013; Hubbard et al , 2015; Roulin and Jensen, 2015). Melanin and white patches have previously been suggested to be influenced by an individual's condition (Gustafsson et al , 1995; Griffith, 2000), including long-lasting effects of early environments (Roulin, 2016).…”

Section: Discussionsupporting

confidence: 90%

“…Although it is now clear that many genes underlying sexual dimorphism are not sex linked (Badyaev, 2002) and that sex linkage is not a requirement for sexual dimorphism (Fairbairn and Roff, 2006; Dean and Mank, 2014; Roulin and Jensen, 2015), there is accumulating evidence for sex linkage of genes underlying sexually dimorphic traits, especially with the increasing accessibility of genetic mapping in nonmodel organisms (Charlesworth and Mank, 2010; Huang and Rabosky, 2015). Recent evidence suggests that Z-linked genetic variance can explain as much as 40% of the total phenotypic variation in colour ornaments of birds (see Introduction and Husby et al , 2013).…”

Section: Discussionmentioning

confidence: 99%

“…For this reason, future studies will need to integrate cross-sex genetic covariances across traits with multivariate selection analyses (Lande, 1980; Chenoweth et al , 2010) in order to fully uncover how sexual antagonistic selection and intralocus sexual conflicts can promote or constrain the evolution of divergent male and female traits (Wyman et al , 2013). Such an approach has been adopted recently in a study of a laboratory population of Drosophila melanogaster (Ingleby et al , 2014) and also in a natural population of barn owl (Roulin and Jensen, 2015). Yet, model complexity combined with data availability still largely prevent such multivariate analyses in many natural populations.…”

Section: Discussionmentioning

confidence: 99%

“…Even though the presence of strong cross-sex genetic covariances is a crucial assumption underlying the correlated response hypothesis, sex-specific estimates of key quantitative genetic (co)variances underlying secondary sexual traits that are expressed in both sexes have been conspicuously scarce in the empirical literature (but see Price and Burley, 1993; Price, 1996; Chenoweth and Blows, 2003; Roulin and Jensen, 2015). In particular, studies on the role of ornamentation have largely focussed on sexually dimorphic species while neglecting species with low or no sexual dimorphism (see reviews in Kraaijeveld et al , 2007; Poissant et al , 2010).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Colour ornamentation in the blue tit: quantitative genetic (co)variances across sexes

Charmantier

Wolak²,

Grégoire

et al. 2016

Heredity

View full text Add to dashboard Cite

Although secondary sexual traits are commonly more developed in males than females, in many animal species females also display elaborate ornaments or weaponry. Indirect selection on correlated traits in males and/or direct sexual or social selection in females are hypothesized to drive the evolution and maintenance of female ornaments. Yet, the relative roles of these evolutionary processes remain unidentified, because little is known about the genetic correlation that might exist between the ornaments of both sexes, and few estimates of sex-specific autosomal or sex-linked genetic variances are available. In this study, we used two wild blue tit populations with 9 years of measurements on two colour ornaments: one structurally based (blue crown) and one carotenoid based (yellow chest). We found significant autosomal heritability for the chromatic part of the structurally based colouration in both sexes, whereas carotenoid chroma was heritable only in males, and the achromatic part of both colour patches was mostly non heritable. Power limitations, which are probably common among most data sets collected so far in wild populations, prevented estimation of sex-linked genetic variance. Bivariate analyses revealed very strong cross-sex genetic correlations in all heritable traits, although the strength of these correlations was not related to the level of sexual dimorphism. In total, our results suggest that males and females share a majority of their genetic variation underlying colour ornamentation, and hence the evolution of these sex-specific traits may depend greatly on correlated responses to selection in the opposite sex.

show abstract

Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Colour ornamentation in the blue tit: quantitative genetic (co)variances across sexes

Charmantier

Wolak²,

Grégoire

et al. 2016

Heredity

View full text Add to dashboard Cite

show abstract

“…Color traits are highly heritable in the barn owl (plumage coloration: 0.84 ± 0.02, spot size: 0.67 ± 0.02, and spot number: 0.57 ± 0.03) and moderate to strongly genetically correlated (between 0.2 ± 0.04 and 0.93 ± 0.04: Roulin and Jensen 2015). Color traits are highly heritable in the barn owl (plumage coloration: 0.84 ± 0.02, spot size: 0.67 ± 0.02, and spot number: 0.57 ± 0.03) and moderate to strongly genetically correlated (between 0.2 ± 0.04 and 0.93 ± 0.04: Roulin and Jensen 2015).…”

mentioning

confidence: 99%

Beyond mean allelic effects: A locus at the major color geneMC1Rassociates also with differing levels of phenotypic and genetic (co)variance for coloration in barn owls

et al. 2017

View full text Add to dashboard Cite

The mean phenotypic effects of a discovered variant help to predict major aspects of the evolution and inheritance of a phenotype. However, differences in the phenotypic variance associated to distinct genotypes are often overlooked despite being suggestive of processes that largely influence phenotypic evolution, such as interactions between the genotypes with the environment or the genetic background. We present empirical evidence for a mutation at the melanocortin-1-receptor gene, a major vertebrate coloration gene, affecting phenotypic variance in the barn owl, Tyto alba. The white MC1R allele, which associates with whiter plumage coloration, also associates with a pronounced phenotypic and additive genetic variance for distinct color traits. Contrarily, the rufous allele, associated with a rufous coloration, relates to a lower phenotypic and additive genetic variance, suggesting that this allele may be epistatic over other color loci. Variance differences between genotypes entailed differences in the strength of phenotypic and genetic associations between color traits, suggesting that differences in variance also alter the level of integration between traits. This study highlights that addressing variance differences of genotypes in wild populations provides interesting new insights into the evolutionary mechanisms and the genetic architecture underlying the phenotype.

show abstract

Selection and inheritance of sexually dimorphic juvenile plumage coloration

Tringali

Bowman

Husby

2015

Ecology and Evolution

View full text Add to dashboard Cite

Sexually dimorphic plumage coloration is widespread in birds and is generally thought to be a result of sexual selection for more ornamented males. Although many studies find an association between coloration and fitness related traits, few of these simultaneously examine selection and inheritance. Theory predicts that sex‐linked genetic variation can facilitate the evolution of dimorphism, and some empirical work supports this, but we still know very little about the extent of sex linkage of sexually dimorphic traits. We used a longitudinal study on juvenile Florida scrub‐jays (Aphelocoma coerulescens) to estimate strength of selection and autosomal and Z‐linked heritability of mean brightness, UV chroma, and hue. Although plumage coloration signals dominance in juveniles, there was no indication that plumage coloration was related to whether or not an individual bred or its lifetime reproductive success. While mean brightness and UV chroma are moderately heritable, hue is not. There was no evidence for sex‐linked inheritance of any trait with most of the variation explained by maternal effects. The genetic correlation between the sexes was high and not significantly different from unity. These results indicate that evolution of sexual dimorphism in this species is constrained by low sex‐linked heritability and high intersexual genetic correlation.

show abstract

Sex‐linked inheritance, genetic correlations and sexual dimorphism in three melanin‐based colour traits in the barn owl

Cited by 31 publications

References 75 publications

Colour ornamentation in the blue tit: quantitative genetic (co)variances across sexes

Colour ornamentation in the blue tit: quantitative genetic (co)variances across sexes

Beyond mean allelic effects: A locus at the major color geneMC1Rassociates also with differing levels of phenotypic and genetic (co)variance for coloration in barn owls

Selection and inheritance of sexually dimorphic juvenile plumage coloration

Contact Info

Product

Resources

About