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Genetic structure in the Mediterranean seagrass Posidonia oceanica: disentangling past vicariance events from contemporary patterns of gene flow

dc.contributor.authorSerra, I. A.
dc.contributor.authorInnocenti, A. M.
dc.contributor.authorDi Maida, G.
dc.contributor.authorCalvo, S.
dc.contributor.authorMigliaccio, M.
dc.contributor.authorZambianchi, E.
dc.contributor.authorPizzigalli, C.
dc.contributor.authorARNAUD-HAOND, Sophie
dc.contributor.authorDuarte, C. M.
dc.contributor.authorSerrão, Ester
dc.contributor.authorProcaccini, G.
dc.date.accessioned2014-05-30T10:43:00Z
dc.date.available2014-05-30T10:43:00Z
dc.date.issued2010-02
dc.date.updated2014-05-21T13:17:40Z
dc.description.abstractThe Mediterranean Sea is a two-basin system, with the boundary zone restricted to the Strait of Sicily and the narrow Strait of Messina. Two main population groups are recognized in the Mediterranean endemic seagrass Posidonia oceanica, corresponding to the Western and the Eastern basins. To address the nature of the East–West cleavage in P. oceanica, the main aims of this study were: (i) to define the genetic structure within the potential contact zone (i.e. the Strait of Sicily) and clarify the extent of gene flow between the two population groups, and (ii) to investigate the role of present water circulation patterns vs. past evolutionary events on the observed genetic pattern. To achieve these goals, we utilized SSR markers and we simulated, with respect to current regime, the possible present-day dispersal pattern of Posidonia floating fruits using 28-day numerical Lagrangian trajectories. The results obtained confirm the presence of the two main population groups, without any indices of reproductive isolation, with the break zone located at the level of the Southern tip of Calabria. The populations in the Strait of Sicily showed higher affinity with Western than with Eastern populations. This pattern of genetic structure probably reflects historical avenues of recolonization from relict glacial areas and past vicariance events, but seems to persist as a result of the low connectivity among populations via marine currents, as suggested by our dispersal simulation analysis.por
dc.identifier.citationSerra, I.A.; Innocenti, A.M.; Di Maida, G.; Calvo, S.; Migliaccio, M.; Zambianchi, E.; Pizzigalli, C.; Arnaud-Haond, S.; Duarte, C.M.; Serrao, E.A.; Procaccini, G.Genetic structure in the Mediterranean seagrass Posidonia oceanica: Disentangling past vicariance events from contemporary patterns of gene flow, Molecular Ecology, 19, 3, 557-568, 2010.por
dc.identifier.doihttp://dx.doi.org/10.1007/s00227-007-0730-0
dc.identifier.issn0962-1083
dc.identifier.otherAUT: ESE00527;
dc.identifier.urihttp://hdl.handle.net/10400.1/4131
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherWileypor
dc.relation.publisherversionhttp://onlinelibrary.wiley.com/doi/10.1111/j.1365-294X.2009.04462.x/abstract;jsessionid=CED623C324D3E646545648C92C44B262.f03t01por
dc.subjectDispersal simulationpor
dc.subjectMediterraneanpor
dc.subjectPosidonia oceanicapor
dc.subjectSimple sequence repeatpor
dc.subjectTransition zonepor
dc.subjectVicariancepor
dc.titleGenetic structure in the Mediterranean seagrass Posidonia oceanica: disentangling past vicariance events from contemporary patterns of gene flowpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage568por
oaire.citation.issue3por
oaire.citation.startPage557por
oaire.citation.titleMolecular Ecologypor
oaire.citation.volume19por
person.familyNameARNAUD-HAOND
person.familyNameSerrao
person.givenNameSophie
person.givenNameEster A.
person.identifierC-6686-2012
person.identifier.ciencia-id5A15-FF67-4075
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.orcid0000-0001-5814-8452
person.identifier.orcid0000-0003-1316-658X
person.identifier.scopus-author-id6602532118
person.identifier.scopus-author-id7004093604
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication2b10c79a-8ca9-4449-ba02-0c240f00d921
relation.isAuthorOfPublication45ccfe90-155c-4d6f-9e86-8f0fd064005f
relation.isAuthorOfPublication.latestForDiscovery2b10c79a-8ca9-4449-ba02-0c240f00d921

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