seanoe:99833 ALLAL Francois UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France 2024-10-03 ISO 19115:2003/19139 1.0 Reduced fitness associated with introgression within the Western Mediterranean admixed population of European seabass 2020 2024-10-03 Leitwein Maeva, Ernande Bruno, Vandeputte Marc, Clota Frederic, Allal Francois (2020). Reduced fitness associated with introgression within the Western Mediterranean admixed population of European seabass. SEANOE. https://doi.org/10.17882/99833 Unveiling the implications of hybridization on fitness stands as a primary focus in the realms of ecology and evolution. Numerous investigations elucidate how evolutionary mechanisms regulate the intricate pattern of introgression across genomes, yet few have examined the consequential impact of genetic admixture on fitness attributes. Leveraging the Western Mediterranean population of the European seabass (Dicentrarchus labrax), a population formed through hybridization of the Atlantic and Mediterranean lineages in the Alboran Sea, we utilized the Axiom Sea Bass 57k SNP DlabChip array to genotype 1850 hybrid individuals. This enabled us to evaluate the correlation between individual admixture levels and fitness traits under varying thermal conditions (19°C, 21°C, 23°C, and 25°C). Our initial findings unveil a male-biased sex ratio and high temperature sensitivity among admixed individuals with a greater proportion of Atlantic ancestry. Subsequently, our analysis demonstrates that individuals with a higher Atlantic genetic background also exhibit reduced body weight (a parameter linked to fecundity in fish) compared to those with lower Atlantic ancestry. These outcomes underscore the disadvantageous nature of Atlantic ancestry introgression in the Mediterranean region, aligning with previous observations of the elimination of Atlantic ancestry segments subsequent to hybridization. M. L. was supported by a grant from Ifremer’s Scientific Board. This project was carried out with the support of Ifremer MARBEC Experimental Aquaculture Research Station staff and facilities and financial support of the French Ministry of Food and Agriculture with grant number CRECHE 2020 LEITWEIN Maeva UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France ERNANDE Bruno UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France VANDEPUTTE Marc UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France CLOTA Frederic UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France ALLAL Francois UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France SEANOE https://www.seanoe.org/data/00886/99833/illustration.gif European seabass phenotyped and genotyped during the project introgression fitness admixture European Seabass ancestry temperature Fisheries and aquaculture Bioinformatics Fish ODATIS aggregation parameters and Essential Variable names 2024-09-16 geonetwork.thesaurus.external.theme.NVS.OD1 Fisheries and aquaculture SeaDataNet Parameter Disciplines 2021-04-07 geonetwork.thesaurus.external.parameter.NVS.P08 Analysis data Type de jeux de donnée ODATIS 2024-10-15 geonetwork.thesaurus.local.theme.type_jeux_donnee CC-BY (Creative Commons - Attribution) Post-larval exposure to warm temperature enhances female ratio, while starvation and photoperiod do not: The case of European seabass, Dicentrarchus labrax 2024 Elsevier CLOTA FREDERIC GOIKOETXEA ALEXANDER VERGNET ALAIN BLANC MARIE-ODILE LALLEMENT STEPHANE RUELLE FRANCOIS LEITWEIN MAEVA ALLAL FRANCOIS GEFFROY BENJAMIN VANDEPUTTE MARC 10.1016/j.aquaculture.2024.740758 oceans -6.731905 22.447783 31.792076 45.017955 TXT VCF https://www.seanoe.org/data/00886/99833/data/109929.txt WWW:DOWNLOAD-1.0-link--download Quality controlled data Full phenotyping data - 168 KB https://www.seanoe.org/data/00886/99833/data/109930.05.recode.vcf WWW:DOWNLOAD-1.0-link--download Raw data Genotyping data in VCF format for Offspring and parents of European sea bass - 360 MB https://doi.org/10.17882/99833 WWW:LINK-1.0-http--metadata-URL DOI of the product https://www.seanoe.org/data/00886/99833/ rel-canonical Seanoe