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Is asexual reproduction more important at geographical limits? A genetic study of the seagrass Zostera marina in the Ria Formosa, Portugal

2003Journal article Open access
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dc.contributor.authorBillingham, M. R.
dc.contributor.authorReusch, T. B. H.
dc.contributor.authorAlberto, F.
dc.contributor.authorSerrão, Ester
dc.date.accessioned2014-05-30T15:05:05Z
dc.date.available2014-05-30T15:05:05Z
dc.date.issued2003
dc.date.updated2014-05-21T14:11:13Z
dc.description.abstractIn populations of species that are able to reproduce both sexually and asexually, there may be local differences with regard to the relative importance of the 2 modes of reproduction. Studies of plant species with such a life history have shown that the contribution of sexual reproduction to population maintenance may be lower at the geographical margins, with genotypic diversity often used as an indicator of the relative importance of vegetative and sexual reproduction. This hypothesis was examined in a collection of samples of eelgrass Zostera marina (a marine flowering plant) from its eastern Atlantic southern limit (Ria Formosa, Portugal). Samples from 12 sites were genotyped using 9 microsatellite loci to compare within-site clonal and genetic diversity, and among-site distribution of genetic diversity, with previously published values from central sites. Sites within the Ria Formosa had lower clonal diversities (mean = 0.29, range = 0.07 to 0.68) than the central sites (mean = 0.86, range = 0.33 to 1.00), lower levels of expected heterozygosity (He = 0.423 vs 0.486) and exhibited heterozygote excesses rather than deficits. Similarly, genetic differentiation was found to be much greater in the Ria Formosa, with the FST of 0.233 being over 10-fold greater than that reported for populations in the Baltic Sea. Results from this study were consistent with previous findings of reduced sexual reproduction, genotypic diversity and among-population gene flow at species limits.por
dc.identifier.citationBillingham, M.R.; Reusch, T.B.H.; Alberto, F.; Serrão, E.A.Is asexual reproduction more important at geographical limits? A genetic study of the seagrass Zostera marina in the Ria Formosa, Portugal, Marine Ecology Progress Series, 265, Dez. 2003, 77-83, 2003.por
dc.identifier.doihttp://dx.doi.org/10.3354/meps265077
dc.identifier.issn0171-8630
dc.identifier.otherAUT: ESE00527;
dc.identifier.urihttp://hdl.handle.net/10400.1/4141
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherInter Researchpor
dc.relation.publisherversionhttp://www.int-res.com/articles/meps2003/265/m265p077.pdfpor
dc.subjectGenetic diversitypor
dc.subjectSpecies limitpor
dc.subjectAsexual reproductionpor
dc.subjectClonal planpor
dc.subjectSeagrasspor
dc.subjectZostera marinapor
dc.titleIs asexual reproduction more important at geographical limits? A genetic study of the seagrass Zostera marina in the Ria Formosa, Portugalpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage83por
oaire.citation.startPage77por
oaire.citation.titleMarine Ecology Progress Seriespor
oaire.citation.volume265por
person.familyNameAlberto
person.familyNameSerrao
person.givenNameFilipe
person.givenNameEster A.
person.identifier1488456
person.identifierC-6686-2012
person.identifier.ciencia-idBD15-2AC7-8AA3
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.orcid0000-0003-0593-3240
person.identifier.orcid0000-0003-1316-658X
person.identifier.scopus-author-id6701653422
person.identifier.scopus-author-id7004093604
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication4e95893d-e3c7-462f-a897-49bb8999b65b
relation.isAuthorOfPublication45ccfe90-155c-4d6f-9e86-8f0fd064005f
relation.isAuthorOfPublication.latestForDiscovery4e95893d-e3c7-462f-a897-49bb8999b65b

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