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Genetic sub-structure and intermediate optimal outcrossing distance in the marine angiosperm Zostera marina

2007-08Journal article Restricted access
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dc.contributor.authorBillingham, M. R.
dc.contributor.authorSimões, T.
dc.contributor.authorReusch, T. B. H.
dc.contributor.authorSerrão, Ester
dc.date.accessioned2014-06-06T09:23:35Z
dc.date.available2014-06-06T09:23:35Z
dc.date.issued2007-08
dc.date.updated2014-05-21T13:36:28Z
dc.description.abstractThe spatial distribution of genetic variability depends on the spatial patterns of clonal and sexual reproduction, gene flow, genetic drift and natural selection. Species with restricted dispersal may exhibit genetic structuring within populations with immediate neighbours being close relatives, and may show differentiation among populations. Genetic structuring of a species may have important genetic, evolutionary and ecological consequences including distance-dependent mating success. In this study we used microsatellite markers to show that clones of Zostera marina in a population in the Ria Formosa, Portugal, were aggregated and covered distances of up to 3–4 m. Clones within 4 m of each other exhibited significant and positive coancestry values, reflecting the limited seed dispersal of this species. Hand-pollinations between near (0–10.9 m), intermediate (11–32 m) and far (15 km) individuals resulted in similar levels of seed set, although the near pollinations had higher, although not statistically significant, levels of seed abortion during maturation. Seeds from intermediate-distance pollinations had a significantly higher proportion of seeds germinate and shorter germination time than both the near and far seeds. Similarly, the average number of seedlings produced per pollination, used as an overall estimate of fitness, was significantly greater for the intermediate distance when compared to both near and far pollinations. These results suggest that the genetic structuring observed may result in both inbreeding and outbreeding depression, which gives rise to an intermediate optimal outcrossing distance.por
dc.identifier.citationBillingham, M.R.; Simões, T.; Reusch, T.B.H.; Serrão, E.A.Genetic sub-structure and intermediate optimal outcrossing distance in the marine angiosperm Zostera marina, Marine Biology, 152, 4, 793-801, 2007.por
dc.identifier.doihttp://dx.doi.org/ 10.1007/s00227-007-0730-0
dc.identifier.issn0025-3162
dc.identifier.otherAUT: ESE00527;
dc.identifier.urihttp://hdl.handle.net/10400.1/4212
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherSpringer Verlagpor
dc.relation.publisherversionhttp://link.springer.com/article/10.1007%2Fs00227-007-0730-0por
dc.subjectZostera marinapor
dc.subjectGenetic variabilitypor
dc.titleGenetic sub-structure and intermediate optimal outcrossing distance in the marine angiosperm Zostera marinapor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage801por
oaire.citation.issue4por
oaire.citation.startPage793por
oaire.citation.titleMarine Biologypor
oaire.citation.volume152por
person.familyNameSerrao
person.givenNameEster A.
person.identifierC-6686-2012
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.orcid0000-0003-1316-658X
person.identifier.scopus-author-id7004093604
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication45ccfe90-155c-4d6f-9e86-8f0fd064005f
relation.isAuthorOfPublication.latestForDiscovery45ccfe90-155c-4d6f-9e86-8f0fd064005f

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