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Genetic structure of amphi-Atlantic Laminaria digitata (Laminariales, Phaeophyceae) reveals a unique range-edge gene pool and suggests post-glacial colonization of the NW Atlantic

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dc.contributor.authorNeiva, J.
dc.contributor.authorSerrao, Ester
dc.contributor.authorPaulino, Cristina
dc.contributor.authorGouveia, Licínia
dc.contributor.authorWant, Andrew
dc.contributor.authorTamigneaux, Éric
dc.contributor.authorBallenghien, Marion
dc.contributor.authorMauger, Stéphane
dc.contributor.authorFouqueau, Louise
dc.contributor.authorEngel-Gautier, Carolyn
dc.contributor.authorDestombe, Christophe
dc.contributor.authorValero, Myriam
dc.date.accessioned2020-07-10T12:53:11Z
dc.date.available2020-07-10T12:53:11Z
dc.date.issued2020
dc.description.abstractIn the North-east (NE) Atlantic, most intertidal fucoids and warm-temperate kelps show unique low-latitude gene pools matching long-term climatic refugia. For cold-temperate kelps data are scarcer despite their unique cultural, ecological and economic significance. Here we test whether the amphi-Atlantic range of Laminaria digitata is derived from past glacial survival (and vicariance) in both NE and North-west (NW) Atlantic refugia (as suggested by niche modelling), or post-glacial (re)colonization (as suggested by low mtDNA divergence). We screened 14 populations from across the species range for 12 microsatellite loci to identify and map major gene pools and refugia. We assessed if NW Atlantic survival was supported by unique endemic variation, and if genetic diversity and structure were, as predicted from larger hindcasted glacial ranges, higher in the NE Atlantic. Microsatellite data subdivided L. digitata into three main genetic groups matching Brittany, northern Europe and the NW Atlantic, with finer-scale sub-structuring within European clusters. The relatively diverse NE Atlantic lineages probably survived the Last Glacial Maximum along unglaciated periglacial shorelines of the Armorican and Celtic Seas (Brittany cluster) and Ireland (northern European cluster), and remain well differentiated despite their relative proximity. The unique Brittany gene pool, at the contemporary European rear edge, is projected to disappear in the near future under high greenhouse gas emission scenarios. Low allelic diversity and low endemism in the NW Atlantic are consistent with recent post-glacial colonization from Europe, challenging the long-standing hypothesis of in situ glacial survival. Confusion with Hedophyllum nigripes may have led to underestimation of regional diversity of L. digitata, but also to overestimation of its presence along putative trans-Atlantic migration routes. Partial incongruence between modelling and genetic-based biogeographic inferences highlights the benefits of comparing both approaches to understand how shifting climatic conditions affect marine species distributions and explain large-scale patterns of spatial genetic structure.pt_PT
dc.description.sponsorshipPTDC/MAR-EST/6053/2014, Biodiversa/0004/2015, UID/Multi/04326/2019, SFRH/BSAB/150485/2019 (to EAS) and Norma Transitória DL 57/2016/CP1361/CT001pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1080/09670262.2020.1750058pt_PT
dc.identifier.issn0967-0262
dc.identifier.urihttp://hdl.handle.net/10400.1/14069
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherTaylor & Francispt_PT
dc.subjectClimate changept_PT
dc.subjectEcosystem engineerpt_PT
dc.subjectGlacial refugiapt_PT
dc.subjectIntertidal kelppt_PT
dc.subjectLarge-scale population structurept_PT
dc.subjectTrans-Atlantic colonizationpt_PT
dc.titleGenetic structure of amphi-Atlantic Laminaria digitata (Laminariales, Phaeophyceae) reveals a unique range-edge gene pool and suggests post-glacial colonization of the NW Atlanticpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F88935%2F2012/PT
oaire.citation.endPage12pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleEuropean Journal of Phycologypt_PT
oaire.fundingStreamSFRH
person.familyNameMiranda Neiva
person.familyNameSerrao
person.familyNamePaulino
person.familyNameGouveia
person.givenNameJoão
person.givenNameEster A.
person.givenNameCristina
person.givenNameLicínia
person.identifierM-3818-2013
person.identifierC-6686-2012
person.identifier.ciencia-id191B-5464-41F5
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.ciencia-id1C1E-B852-4086
person.identifier.orcid0000-0002-5927-4570
person.identifier.orcid0000-0003-1316-658X
person.identifier.orcid0000-0001-8637-545X
person.identifier.orcid0000-0002-5531-8476
person.identifier.ridM-4126-2013
person.identifier.ridM-7650-2013
person.identifier.scopus-author-id54895771800
person.identifier.scopus-author-id7004093604
person.identifier.scopus-author-id55892980300
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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