Data/hora: 11/06/2024 01:35:42

Provedor de dados: | 5
País: | France
Título: | The origin and remolding of genomic islands of differentiation in the European sea bass
Autores: | Duranton, Maud; Allal, Francois; Fraisse, Christelle; Bierne, Nicolas; Bonhomme, Francois; Gagnaire, Pierre-alexandre.
Data: | 2018-06
Ano: | 2018
Resumo: | Speciation is a complex process that leads to the progressive establishment of reproductive isolation barriers between diverging populations. Genome-wide comparisons between closely related species have revealed the existence of heterogeneous divergence patterns, dominated by genomic islands of increased divergence supposed to contain reproductive isolation loci. However, this divergence landscape only provides a static picture of the dynamic process of speciation, during which confounding mechanisms unrelated to speciation can interfere. Here we use haplotype-resolved whole-genome sequences to identify the mechanisms responsible for the formation of genomic islands between Atlantic and Mediterranean sea bass lineages. Local ancestry patterns show that genomic islands first emerged in allopatry through linked selection acting on a heterogeneous recombination landscape. Then, upon secondary contact, preexisting islands were strongly remolded by differential introgression, revealing variable fitness effects among regions involved in reproductive isolation. Interestingly, we find that divergent regions containing ancient polymorphisms conferred the strongest resistance to introgression.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00446/55750/57409.pdf

https://archimer.ifremer.fr/doc/00446/55750/57410.pdf

https://archimer.ifremer.fr/doc/00446/55750/57411.pdf

https://archimer.ifremer.fr/doc/00446/55750/57841.pdf

DOI:10.1038/s41467-018-04963-6

https://archimer.ifremer.fr/doc/00446/55750/

Editor: | Nature Publishing Group
Formato: | application/pdf
Fonte: | Nature Communications (2041-1723) (Nature Publishing Group), 2018-06 , Vol. 9 , N. 1 , P. 2518 (11p.)

Fonte:

This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Common

info:eu-repo/semantics/openAccess

restricted use