The recombination landscape of the barn owl, from families to populations.

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State: Public
Version: Final published version
License: CC BY 4.0
Serval ID
serval:BIB_0FD5E043D8EA
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
The recombination landscape of the barn owl, from families to populations.
Journal
Genetics
Author(s)
Topaloudis A., Cumer T., Lavanchy E., Ducrest A.L., Simon C., Machado A.P., Paposhvili N., Roulin A., Goudet J.
ISSN
1943-2631 (Electronic)
ISSN-L
0016-6731
Publication state
Published
Issued date
08/01/2025
Peer-reviewed
Oui
Editor
Stephen Wright
Volume
229
Number
1
Pages
1-50
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
Homologous recombination is a meiotic process that generates diversity along the genome and interacts with all evolutionary forces. Despite its importance, studies of recombination landscapes are lacking due to methodological limitations and limited data. Frequently used approaches include linkage mapping based on familial data that provides sex-specific broad-scale estimates of realized recombination and inferences based on population linkage disequilibrium that reveal a more fine-scale resolution of the recombination landscape, albeit dependent on the effective population size and the selective forces acting on the population. In this study, we use a combination of these 2 methods to elucidate the recombination landscape for the Afro-European barn owl (Tyto alba). We find subtle differences in crossover placement between sexes that lead to differential effective shuffling of alleles. Linkage disequilibrium-based estimates of recombination are concordant with family-based estimates and identify large variation in recombination rates within and among linkage groups. Larger chromosomes show variation in recombination rates, while smaller chromosomes have a universally high rate that shapes the diversity landscape. We find that recombination rates are correlated with gene content, genetic diversity, and GC content. We find no conclusive differences in the recombination landscapes between populations. Overall, this comprehensive analysis enhances our understanding of recombination dynamics, genomic architecture, and sex-specific variation in the barn owl, contributing valuable insights to the broader field of avian genomics.
Keywords
Animals, Strigiformes/genetics, Linkage Disequilibrium, Male, Female, Recombination, Genetic, Genetic Variation, Genetics, Population, Chromosomes/genetics, Genome, Crossing Over, Genetic, heterochiasmy, hotspots, linkage disequilibrium, linkage map, meiotic recombination
Pubmed
Web of science
Open Access
Yes
Create date
15/11/2024 15:52
Last modification date
10/01/2025 7:08
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