2024-03-28T19:48:23Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1117442021-12-27T16:44:11Zcom_10261_123com_10261_8col_10261_376
00925njm 22002777a 4500
dc
Tine, Mbaye
author
Piferrer, Francesc
author
Reinhardt, Richard
author
2014-12
The European sea bass (Dicentrarchus labrax) is a temperate-zone euryhaline teleost of prime importance for aquaculture and fisheries. This species is subdivided into two naturally hybridizing lineages, one inhabiting the north-eastern Atlantic Ocean and the other the Mediterranean and Black seas. Here we provide a high-quality chromosome-scale assembly of its genome that shows a high degree of synteny with the more highly derived teleosts. We find expansions of gene families specifically associated with ion and water regulation, highlighting adaptation to variation in salinity. We further generate a genome-wide variation map through RAD-sequencing of Atlantic and Mediterranean populations. We show that variation in local recombination rates strongly influences the genomic landscape of diversity within and differentiation between lineages. Comparing predictions of alternative demographic models to the joint allele-frequency spectrum indicates that genomic islands of differentiation between sea bass lineages were generated by varying rates of introgression across the genome following a period of geographical isolation
Nature Communications 5: 5770 (2014)
http://hdl.handle.net/10261/111744
10.1038/ncomms6770
25534655
European sea bass genome and its variation provide insights into adaptation to euryhalinity and speciation