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Metagenetic analysis of patterns of distribution and diversity of marine meiobenthic eukaryotes

2014-11Journal article Open Access
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dc.contributor.authorFonseca, Vera G.
dc.contributor.authorCarvalho, Gary R.
dc.contributor.authorNichols, Ben
dc.contributor.authorQuince, Christopher
dc.contributor.authorJohnson, Harriet F.
dc.contributor.authorNeill, Simon P.
dc.contributor.authorLambshead, John D.
dc.contributor.authorThomas, W. Kelley
dc.contributor.authorPower, Deborah M.
dc.contributor.authorCreer, Simon
dc.date.accessioned2018-12-07T14:57:57Z
dc.date.available2018-12-07T14:57:57Z
dc.date.issued2014-11
dc.description.abstractAimMeiofaunal communities that inhabit the marine benthos offer unique opportunities to simultaneously study the macroecology of numerous phyla that exhibit different life-history strategies. Here, we ask: (1) if the macroecology of meiobenthic communities is explained mainly by dispersal constraints or by environmental conditions; and (2) if levels of meiofaunal diversity surpass existing estimates based on morphological taxonomy. LocationUK and mainland European coast. MethodsNext-generation sequencing techniques (NGS; Roche 454 FLX platform) using 18S nuclear small subunit ribosomal DNA (rDNA) gene. Pyrosequences were analysed using AmpliconNoise followed by chimera removal using Perseus. ResultsRarefaction curves revealed that sampling saturation was only reached at 15% of sites, highlighting that the bulk of meiofaunal diversity is yet to be discovered. Overall, 1353 OTUs were recovered and assigned to 23 different phyla. The majority of sampled sites had c. 60-70 unique operational taxonomic units (OTUs) per site, indicating high levels of beta diversity. The environmental parameters that best explained community structure were seawater temperature, geographical distance and sediment size, but most of the variability (R-2=70%-80%) remains unexplained. Main conclusionsHigh percentages of endemic OTUs suggest that meiobenthic community composition is partly niche-driven, as observed in larger organisms, but also shares macroecological features of microorganisms by showing high levels of cosmopolitanism (albeit on a much smaller scale). Meiobenthic communities exhibited patterns of isolation by distance as well as associations between niche, latitude and temperature, indicating that meiobenthic communities result from a combination of niche assembly and dispersal processes. Conversely, isolation-by-distance patterns were not identified in the featured protists, suggesting that animals and protists adhere to radically different macroecological processes, linked to life-history strategies.
dc.description.sponsorshipNatural Environment Research Council (NERC) [NE/E001505/1, NE/F001266/1, MGF-167]; Portuguese Foundation for Science and Technology (FCT) [SFRH/BD/27413/2006, SFRH/BPD/80447/2014]; EPSRC [EP/H003851/1]; BBSRC CASE studentship; Unilever; Biotechnology and Biological Sciences Research Council [987347]; Engineering and Physical Sciences Research Council [EP/H003851/1]; Natural Environment Research Council [NE/F001290/1, NE/F001266/1, NE/E001505/1, NBAF010002]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1111/geb.12223
dc.identifier.issn1466-822X
dc.identifier.issn1466-8238
dc.identifier.urihttp://hdl.handle.net/10400.1/11783
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectDeep-sea
dc.subjectMicrobial eukaryotes
dc.subjectBiodiversity
dc.subjectDna
dc.subjectBiogeography
dc.subjectDispersal
dc.subjectNematodes
dc.subjectCommunity
dc.subjectWater
dc.titleMetagenetic analysis of patterns of distribution and diversity of marine meiobenthic eukaryotes
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F27413%2F2006/PT
oaire.citation.endPage1302
oaire.citation.issue11
oaire.citation.startPage1293
oaire.citation.titleGlobal Ecology and Biogeography
oaire.citation.volume23
oaire.fundingStreamSFRH
person.familyNameFonseca
person.familyNameNeill
person.familyNamePower
person.givenNameVera
person.givenNameSimon
person.givenNameDeborah Mary
person.identifier.ciencia-id891A-8A44-3CAE
person.identifier.orcid0000-0003-1021-7003
person.identifier.orcid0000-0002-1674-3445
person.identifier.orcid0000-0003-1366-0246
person.identifier.ridF-5566-2010
person.identifier.scopus-author-id36058658400
person.identifier.scopus-author-id7103133373
person.identifier.scopus-author-id7101806760
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
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relation.isAuthorOfPublication72b550e4-878b-487f-9381-fe18f3da1d72
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