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dc.contributor.authorCasso, Mariaes_ES
dc.contributor.authorTuron, Xavieres_ES
dc.contributor.authorPascual, Martaes_ES
dc.date.accessioned2019-08-22T09:24:19Z-
dc.date.available2019-08-22T09:24:19Z-
dc.date.issued2019-
dc.identifier.citationBiological Invasions 21:3575–3592 (2019)es_ES
dc.identifier.issn1387-3547-
dc.identifier.urihttp://hdl.handle.net/10261/188841-
dc.descriptionEste artículo contiene 18 páginas, 6 figuras, 3 tablas.es_ES
dc.description.abstractAssessing genomic diversity and population structure of non-indigenous species is crucial to develop adequate management strategies. However, in species with scarce material for DNA extraction, applying genomic techniques can be a difficult task. Here we set a protocol for small DNA samples combining whole genome amplification (WGA) and genotyping-by-sequencing (GBS). This protocol was applied to the worldwide invasive colonial ascidian Didemnum vexillum using a single zooid per colony. WGA–GBS performance was tested using half zooids, providing empirical demonstration for genotyping reliability. We analysed 296 individuals from 12 localities worldwide including native and the main invaded areas. Polymorphic loci datasets generated by locality, area and globally, identified genetic differentiation at all levels. The two groups found in Japan, the native area, matched Cytochrome Oxidase I clades and were strongly differentiated at the genomic level suggesting reproductive isolation. Our genomic analyses confirmed that only one clade spread worldwide. We also detected some clones, always within the same locality. Genetic diversity was high in both the introduced and in the native area. Three independent colonisation events determined the global distribution of the species, although population pairwise comparisons within each introduced genetic cluster were significant. Human-mediated transportation seems to drive the distribution pattern of this species worldwide and regionally, as there is a lack of isolation by distance within introduced areas. Diverse and well differentiated populations point to a high expansion potential of this worrisome worldwide invader.es_ES
dc.description.sponsorshipThis research was funded by the projects CHALLENGEN and PopCOmics (CTM2013-48163 and CTM2017-88080, MCIU/AEI/FEDER/UE) from the Spanish Government. MC was funded by a predoctoral FPI contract of the Spanish Government. This is a contribution from the Consolidated Research Group ‘‘Benthic Biology and Ecology’’ SGR2017-1120 (Catalan Government).es_ES
dc.language.isoenges_ES
dc.publisherSpringeres_ES
dc.rightsclosedAccesses_ES
dc.subjectAscidianses_ES
dc.subjectDidemnum vexillumes_ES
dc.subjectGenotyping-by-sequencinges_ES
dc.subjectPopulation genomicses_ES
dc.subjectInvasive specieses_ES
dc.subjectWhole genome amplificationes_ES
dc.titleSingle zooids, multiple loci: independent colonisations revealed by population genomics of a global invaderes_ES
dc.typeartículoes_ES
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttps://doi.org/10.1007/s10530-019-02069-8es_ES
dc.identifier.e-issn1573-1464-
dc.relation.csices_ES
oprm.item.hasRevisionno ko 0 false*
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