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Lack of fine-scale genetic structure and distant mating in natural populations of Fucus vesiculosus

2016-02Journal article Open access
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dc.contributor.authorTeixeira, Sara
dc.contributor.authorPearson, G. A.
dc.contributor.authorCandeias, Rui
dc.contributor.authorMadeira, Celine
dc.contributor.authorValero, Myriam
dc.contributor.authorSerrão, Ester
dc.date.accessioned2017-04-07T15:57:07Z
dc.date.available2017-04-07T15:57:07Z
dc.date.issued2016-02
dc.description.abstractFine-scale spatial genetic structure (SGS) within populations reflects the dispersal behaviour of genes and individuals. Here we studied very small-scale SGS and mating patterns in the brown seaweed Fucus vesiculosus, a dioecious marine broadcast spawner with immediate settlement upon gamete release, which is predicted to strongly restrict gene flow. We estimated SGS, inbreeding and kinship for adults and recruits from habitats with contrasting exposures and patchiness (open coast and estuarine ecosystems) using microsatellite loci. Heterozygote deficiency was found for most adult populations but it was even higher for recruits, indicating inbreeding depression. At the fine spatial resolution of this study there was no spatial genetic structuring for 3 of the 5 populations studied across different habitats. Habitat could not explain the unrestricted gene flow in some populations. In the kinship analyses, we identified more putative mothers than fathers, suggesting that male gamete dispersal mediates gene flow at broader distances. However, the vast majority of the parents of the recruits could not be found among the adults sampled nearby, indicating unrestricted gene flow at these small scales. We propose 3 nonexclusive hypotheses for our findings: (1) unrestricted gene flow, (2) inbreeding depression eliminating most inbred individuals resulting from nearby related parents, (3) temporal Wahlund effects, mediated by a hypothetic genetic pool of a bank of microscopic forms persisting from previous generations.
dc.identifier.doi10.3354/meps11607
dc.identifier.issn0171-8630
dc.identifier.otherAUT: ESE00527;
dc.identifier.urihttp://hdl.handle.net/10400.1/9618
dc.language.isoeng
dc.peerreviewedyes
dc.relationPolyandry levels in Fucus vesiculosus
dc.relationExtant or extinct tipping points - climate changes drive genetic diversity and dynamics of range edge populations as evolutionary hotspots
dc.relationTHE IMPORTANCE OF DISPERSAL, SELECTIVE AND CO-EVOLUTIONARY PROCESSES IN DRIVING THE EVOLUTION OF DEEP-SEA SPECIES
dc.relation.isbasedonWOS:000371142500009
dc.titleLack of fine-scale genetic structure and distant mating in natural populations of Fucus vesiculosus
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitlePolyandry levels in Fucus vesiculosus
oaire.awardTitleExtant or extinct tipping points - climate changes drive genetic diversity and dynamics of range edge populations as evolutionary hotspots
oaire.awardTitleTHE IMPORTANCE OF DISPERSAL, SELECTIVE AND CO-EVOLUTIONARY PROCESSES IN DRIVING THE EVOLUTION OF DEEP-SEA SPECIES
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FMAR%2F104477%2F2008/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/EXCL%2FAAG-GLO%2F0661%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/PIDDAC/SFRH%2FBPD%2F39097%2F2007/PT
oaire.citation.endPage142
oaire.citation.startPage131
oaire.citation.titleMarine Ecology Progress Series
oaire.citation.volume544
oaire.fundingStream3599-PPCDT
oaire.fundingStream3599-PPCDT
oaire.fundingStreamPIDDAC
person.familyNameTeixeira
person.familyNamePearson
person.familyNameSerrao
person.givenNameSara
person.givenNameGareth Anthony
person.givenNameEster A.
person.identifier113536
person.identifierC-6686-2012
person.identifier.ciencia-id3315-9919-1A52
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.orcid0000-0003-0419-2348
person.identifier.orcid0000-0002-0768-464X
person.identifier.orcid0000-0003-1316-658X
person.identifier.ridM-3424-2013
person.identifier.ridJ-3911-2013
person.identifier.scopus-author-id23986333100
person.identifier.scopus-author-id55916875600
person.identifier.scopus-author-id7004093604
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
rcaap.rightsopenAccess
rcaap.typearticle
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