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Variable outcomes of hybridization between declining Alosa alosa and Alosa fallax

hal.structure.identifierEcologie Comportementale et Biologie des Populations de Poissons [ECOBIOP]
dc.contributor.authorTAILLEBOIS, Laura
dc.contributor.authorSABATINO, Stephen
hal.structure.identifierEcologie Comportementale et Biologie des Populations de Poissons [ECOBIOP]
dc.contributor.authorMANICKI, Aurélie
hal.structure.identifierEcosystèmes aquatiques et changements globaux [UR EABX]
dc.contributor.authorDAVERAT, Françoise
hal.structure.identifierEcosystèmes aquatiques et changements globaux [UR EABX]
dc.contributor.authorNACHON, David José
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierEcologie Comportementale et Biologie des Populations de Poissons [ECOBIOP]
dc.contributor.authorLEPAIS, Olivier
dc.date.issued2020
dc.identifier.issn1752-4563
dc.description.abstractEnHybridization dynamics between co-occurring species in environments where human-mediated changes take place are important to quantify for furthering our understanding of human impacts on species evolution and for informing management. The allis shad Alosa alosa (Linnaeus, 1758) and twaite shad Alosa fallax (Lacepede, 1803), two clupeids sister species, have been severely impacted by human activities across Europe. The shrinkage of A. alosa distribution range along with the decline of the remaining populations' abundance threatens its persistence. The main objective was to evaluate the extent of hybridization and introgression between those interacting species. We developed a set of 77 species-specific SNP loci that allowed a better resolution than morphological traits as they enabled the detection of hybrids up to the third generation. Variable rates of contemporary hybridization and introgression patterns were detected in 12 studied sites across the French Atlantic coast. Mitochondrial markers revealed a cyto-nuclear discordance almost invariably involving A. alosa individuals with an A. fallax mitochondrial DNA and provided evidence of historical asymmetric introgression. Overall, contemporary and historical introgression revealed by nuclear and mitochondrial markers strongly suggests that a transfer of genes occurs from A. fallax toward A. alosa genome since at least four generations. Moreover, the outcomes of introgression greatly depend on the catchments where local processes are thought to occur. Undoubtedly, interspecific interaction and gene flow should not be overlooked when considering the management of those species.
dc.language.isoen
dc.publisherBlackwell
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.encyto-nuclear discordance
dc.subject.enhybridization
dc.subject.enintrogression
dc.subject.enShads
dc.subject.ensingle nucleotide polymorphism
dc.title.enVariable outcomes of hybridization between declining Alosa alosa and Alosa fallax
dc.typeArticle de revue
dc.identifier.doi10.1111/eva.12889
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
dc.subject.halSciences du Vivant [q-bio]/Biologie animale
bordeaux.journalEvolutionary Applications
bordeaux.page636-651
bordeaux.volume13
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-02437628
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02437628v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Evolutionary%20Applications&rft.date=2020&rft.volume=13&rft.issue=4&rft.spage=636-651&rft.epage=636-651&rft.eissn=1752-4563&rft.issn=1752-4563&rft.au=TAILLEBOIS,%20Laura&SABATINO,%20Stephen&MANICKI,%20Aur%C3%A9lie&DAVERAT,%20Fran%C3%A7oise&NACHON,%20David%20Jos%C3%A9&rft.genre=article


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