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

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State: Public
Version: Final published version
Serval ID
serval:BIB_275AF9CD26EA
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Sex-linked inheritance, genetic correlations and sexual dimorphism in three melanin-based colour traits in the barn owl.
Journal
Journal of Evolutionary Biology
Author(s)
Roulin A., Jensen H.
ISSN
1420-9101 (Electronic)
ISSN-L
1010-061X
Publication state
Published
Issued date
2015
Peer-reviewed
Oui
Volume
28
Number
3
Pages
655-666
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
Theory states that genes on the sex chromosomes have stronger effects on sexual dimorphism than genes on the autosomes. Although empirical data are not necessarily consistent with this theory, this situation may prevail because the relative role of sex-linked and autosomally inherited genes on sexual dimorphism has rarely been evaluated. We estimated the quantitative genetics of three sexually dimorphic melanin-based traits in the barn owl (Tyto alba), in which females are on average darker reddish pheomelanic and display more and larger black eumelanic feather spots than males. The plumage traits with higher sex-linked inheritance showed lower heritability and genetic correlations, but contrary to prediction, these traits showed less pronounced sexual dimorphism. Strong offspring sexual dimorphism primarily resulted from daughters not expressing malelike melanin-based traits and from sons expressing femalelike traits to similar degrees as their sisters. We conclude that in the barn owl, polymorphism at autosomal genes rather than at sex-linked genes generate variation in sexual dimorphism in melanin-based traits.
Keywords
Animals, Feathers, Female, Male, Melanins/genetics, Models, Genetic, Phenotype, Pigmentation/genetics, Quantitative Trait, Heritable, Sex Characteristics, Sex Chromosomes, Strigiformes/genetics, Strigiformes/physiology
Pubmed
Web of science
Open Access
Yes
Create date
12/03/2015 11:19
Last modification date
20/08/2019 13:06
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