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

Détails

ID Serval
serval:BIB_0FD5E043D8EA
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
The recombination landscape of the barn owl, from families to populations
Périodique
GENETICS
Auteur⸱e⸱s
Alexandros Topaloudis, Tristan Cumer, Eléonore Lavanchy, Anne-Lyse Ducrest, Celine Simon, Ana Paula Machado, Nika Paposhvili, Alexandre Roulin, Jérôme Goudet
Statut éditorial
Publié
Date de publication
15/11/2024
Peer-reviewed
Oui
Editeur⸱rice scientifique
Stephen Wright
Langue
anglais
Résumé
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 LD 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 two methods to elucidate the recombination landscape for the Afro-European barn owl (Tyto alba). We find subtle differences in crossover placement between sexes that leads to differential effective shuffling of alleles. LD 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 which 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.
Création de la notice
15/11/2024 15:52
Dernière modification de la notice
15/11/2024 20:27
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