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A genome-wide investigation of the worldwide invader Sargassum muticum shows high success albeit (almost) no genetic diversity

2019-05Journal article Open access
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dc.contributor.authorLe Cam, Sabrina
dc.contributor.authorDaguin-Thiebaut, Claire
dc.contributor.authorBouchemousse, Sarah
dc.contributor.authorEngelen, Aschwin
dc.contributor.authorMieszkowska, Nova
dc.contributor.authorViard, Frédérique
dc.date.accessioned2019-08-29T13:37:17Z
dc.date.available2019-08-29T13:37:17Z
dc.date.issued2019-05
dc.description.abstractTwenty years of genetic studies of marine invaders have shown that successful invaders are often characterized by native and introduced populations displaying similar levels of genetic diversity. This pattern is presumably due to high propagule pressure and repeated introductions. The opposite pattern is reported in this study of the brown seaweed, Sargassum muticum, an emblematic species for circumglobal invasions. Albeit demonstrating polymorphism in the native range, microsatellites failed to detect any genetic variation over 1,269 individuals sampled from 46 locations over the Pacific-Atlantic introduction range. Single-nucleotide polymorphisms (SNPs) obtained from ddRAD sequencing revealed some genetic variation, but confirmed severe founder events in both the Pacific and Atlantic introduction ranges. Our study thus exemplifies the need for extreme caution in interpreting neutral genetic diversity as a proxy for invasive potential. Our results confirm a previously hypothesized transoceanic secondary introduction from NE Pacific to Europe. However, the SNP panel unexpectedly revealed two additional distinct genetic origins of introductions. Also, conversely to scenarios based on historical records, southern rather than northern NE Pacific populations could have seeded most of the European populations. Finally, the most recently introduced populations showed the lowest selfing rates, suggesting higher levels of recombination might be beneficial at the early stage of the introduction process (i.e., facilitating evolutionary novelties), whereas uniparental reproduction might be favored later in sustainably established populations (i.e., sustaining local adaptation).pt_PT
dc.description.sponsorshipAgence Nationale de la Recherche - ANR-10-BTBR-04; European Regional Development Fund; Fundacao para a Ciencia e a Tecnologia - SFRH/BPD/107878/2015, UID/Multi/04326/2016, UID/Multi/04326/2019; Brittany Region;pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1111/eva.12837
dc.identifier.urihttp://hdl.handle.net/10400.1/12744
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWiley Open Accesspt_PT
dc.relationThe invasive theory of the pest seaweed Sargassum muticum in Southern Portugal.
dc.relationDEMOGRAPHIC ASSESSMENT OF CONTEMPORARY BIOME DEGRADATION: PROVIDING MANAGEMENT AND RESTORATION TOOLS FOR CORAL, KELP AND SEAGRASS COMMUNITIES
dc.relationInvasive seaweeds in rising temperatures: impacts and the role of acclimation and adaptation
dc.subjectBiological invasionpt_PT
dc.subjectNon-native speciept_PT
dc.subjectPopulation genomicspt_PT
dc.subjectRAD sequencingpt_PT
dc.subjectSeaweedpt_PT
dc.subjectSelfingpt_PT
dc.titleA genome-wide investigation of the worldwide invader Sargassum muticum shows high success albeit (almost) no genetic diversitypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleThe invasive theory of the pest seaweed Sargassum muticum in Southern Portugal.
oaire.awardTitleDEMOGRAPHIC ASSESSMENT OF CONTEMPORARY BIOME DEGRADATION: PROVIDING MANAGEMENT AND RESTORATION TOOLS FOR CORAL, KELP AND SEAGRASS COMMUNITIES
oaire.awardTitleInvasive seaweeds in rising temperatures: impacts and the role of acclimation and adaptation
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCI/POCI%2FMAR%2F55377%2F2004/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PPCDT%2FMAR%2F55377%2F2004/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F63703%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/SEAS-ERA%2F0001%2F2012/PT
oaire.citation.titleEvolutionary Applicationspt_PT
oaire.fundingStreamPOCI
oaire.fundingStream3599-PPCDT
oaire.fundingStream3599-PPCDT
person.familyNameEngelen
person.givenNameAschwin
person.identifier.ciencia-id911A-9A0C-744D
person.identifier.orcid0000-0002-9579-9606
person.identifier.ridM-3432-2013
person.identifier.scopus-author-id6701622770
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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