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The genetic archite...
The genetic architecture of a female sexual ornament
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- Wright, Dominic (author)
- Linköpings universitet,Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Biologi,Tekniska högskolan,Edward Grey Institute, Department of Zoology, University of Oxford, Oxford, United Kingdom
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- Kerje, Susanne (author)
- Uppsala universitet,Institutionen för medicinska vetenskaper,Institutionen för medicinsk biokemi och mikrobiologi,Department of Medical Biochemistry & Microbiology, BMC, Uppsala University, Uppsala, Sweden
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- Brändström, Helena (author)
- Uppsala universitet,Institutionen för medicinska vetenskaper,Metabolic Bone Diseases,Department of Medical Sciences, Uppsala University Hospital, Uppsala, Sweden
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- Schütz, Karin (author)
- Department of Animal Environment & Health, Section of Ethology, Swedish University of Agricultural Sciences, Skara, Sweden
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- Kindmark, Andreas (author)
- Uppsala universitet,Institutionen för medicinska vetenskaper,Metabolic Bone Diseases,Department of Medical Sciences, Uppsala University Hospital, Uppsala, Sweden
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- Andersson, Leif (author)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Department of Medical Biochemistry & Microbiology, BMC, Uppsala University, Uppsala, Sweden
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- Jensen, Per, 1956- (author)
- Linköpings universitet,Biologi,Tekniska högskolan
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- Pizzari, Tommaso (author)
- Edward Grey Institute, Department of Zoology, University of Oxford, South Parks Road, Oxford, United Kingdom
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(creator_code:org_t)
- 2007-10-19
- 2008
- English.
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In: Evolution. - Oxford, United Kingdom : Wiley. - 0014-3820 .- 1558-5646. ; 62:1, s. 86-98
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https://doi.org/10.1...
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Abstract
Subject headings
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- Understanding the evolution of sexual ornaments, and particularly that of female sexual ornaments, is an enduring challenge in evolutionary biology. Key to this challenge are establishing the relationship between ornament expression and female reproductive investment, and determining the genetic basis underpinning such relationship. Advances in genomics provide unprecedented opportunities to study the genetic architecture of sexual ornaments in model species. Here, we present a quantitative trait locus (QTL) analysis of a female sexual ornament, the comb of the fowl, Gallus gallus, using a large-scale intercross between red junglefowl and a domestic line, selected for egg production. First, we demonstrate that female somatic investment in comb reflects female reproductive investment. Despite a trade-off between reproductive and skeletal investment mediated by the mobilization of skeletal minerals for egg production, females with proportionally large combs also had relatively high skeletal investment. Second, we identify a major QTL for bisexual expression of comb mass and several QTL specific to female comb mass. Importantly, QTL for comb mass were nonrandomly clustered with QTL for female reproductive and skeletal investment on chromosomes one and three. Together, these results shed light onto the physiological and genetic architecture of a female ornament.
Keyword
- Female ornaments
- genetic quality
- male mate choice
- QTL
- sexual selection
- MEDICINE
- MEDICIN
- NATURAL SCIENCES
Publication and Content Type
- ref (subject category)
- art (subject category)
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