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High connectivity across the fragmented chemosynthetic ecosystems of the deep Atlantic Equatorial Belt: efficient dispersal mechanisms or questionable endemism?

2013Journal article Restricted access
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dc.contributor.authorTeixeira, Sara
dc.contributor.authorOlu, Karine
dc.contributor.authorDecker, C.
dc.contributor.authorCunha, R. L.
dc.contributor.authorFuchs, S.
dc.contributor.authorHourdez, S.
dc.contributor.authorSerrão, Ester
dc.contributor.authorARNAUD-HAOND, Sophie
dc.date.accessioned2014-05-27T13:27:32Z
dc.date.available2014-05-27T13:27:32Z
dc.date.issued2013
dc.date.updated2014-05-21T11:22:44Z
dc.description.abstractChemosynthetic ecosystems are distributed worldwide in fragmented habitats harbouring seemingly highly specialized communities. Yet, shared taxa have been reported from highly distant chemosynthetic communities. These habitats are distributed in distinct biogeographical regions, one of these being the so-called Atlantic Equatorial Belt (AEB). Here, we combined genetic data (COI) from several taxa to assess the possible existence of cryptic or synonymous species and to detect the possible occurrence of contemporary gene flow among populations of chemosynthetic species located on both sides of the Atlantic. Several Evolutionary Significant Units (ESUs) of Alvinocarididae shrimp and Vesicomyidae bivalves were found to be shared across seeps of the AEB. Some were also common to hydrothermal vent communities of the Mid-Atlantic Ridge (MAR), encompassing taxa morphologically described as distinct species or even genera. The hypothesis of current or very recent large-scale gene flow among seeps and vents was supported by microsatellite analysis of the shrimp species Alvinocaris muricola/ Alvinocaris markensis across the AEB and MAR. Two nonmutually exclusive hypotheses may explain these findings. The dispersion of larvae or adults following strong deep-sea currents, possibly combined with biochemical cues influencing the duration of larval development and timing of metamorphosis, may result in large-scale effective migration among distant spots scattered on the oceanic seafloor. Alternatively, these results may arise from the prevailing lack of knowledge on the ocean seabed, apart from emblematic ecosystems (chemosynthetic ecosystems, coral reefs or seamounts), where the widespread classification of endemism associated with many chemosynthetic taxa might hide wider distributions in overlooked parts of the deep sea.por
dc.identifier.citationTeixeira, S.; Olu, K.; Decker, C.; Cunha, R.L.; Fuchs, S.; Hourdez, S.; Serrão, E.A.; Arnaud-Haond, S. High connectivity across the fragmented chemosynthetic ecosystems of the deep Atlantic Equatorial Belt: efficient dispersal mechanisms or questionable endemism?, Molecular Ecology, 22, 18, 4663-46, 2013.por
dc.identifier.doihttp://dx.doi.org/10.1111/mec.12419
dc.identifier.issn0962-1083
dc.identifier.otherAUT: ESE00527;
dc.identifier.urihttp://hdl.handle.net/10400.1/4096
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherWileypor
dc.relationHotspot Ecosystem Research and Man's Impact on European seas
dc.subjectAtlantic equatorial beltpor
dc.subjectChemosynthetic habitatspor
dc.subjectDeep-sea connectivitypor
dc.subjectEndemic shrimppor
dc.subjectGenetic diversitypor
dc.subjectMicrosatellite markerspor
dc.subjectEndemic bivalvespor
dc.subjectMitochondrial COI genepor
dc.titleHigh connectivity across the fragmented chemosynthetic ecosystems of the deep Atlantic Equatorial Belt: efficient dispersal mechanisms or questionable endemism?por
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleHotspot Ecosystem Research and Man's Impact on European seas
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/226354/EU
oaire.citation.endPage4680por
oaire.citation.issue18por
oaire.citation.startPage4663por
oaire.citation.titleMolecular Ecologypor
oaire.citation.volume22por
oaire.fundingStreamFP7
person.familyNameTeixeira
person.familyNameOlu
person.familyNameSerrao
person.familyNameARNAUD-HAOND
person.givenNameSara
person.givenNameKarine
person.givenNameEster A.
person.givenNameSophie
person.identifierC-6686-2012
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.ciencia-id5A15-FF67-4075
person.identifier.orcid0000-0003-0419-2348
person.identifier.orcid0000-0002-4906-4131
person.identifier.orcid0000-0003-1316-658X
person.identifier.orcid0000-0001-5814-8452
person.identifier.ridM-3424-2013
person.identifier.scopus-author-id23986333100
person.identifier.scopus-author-id7004093604
person.identifier.scopus-author-id6602532118
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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relation.isAuthorOfPublication6dc8e8bf-c4c6-42f8-a4cc-abd3e73ed562
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