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Mitochondrial portraits of the Madeira and Açores archipelagos witness different genetic pools of its settlers

2003Journal article Open access
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dc.contributor.authorBrehm, António
dc.contributor.authorPereira, Luísa
dc.contributor.authorKivisild, Toomas
dc.contributor.authorAmorim, António
dc.date.accessioned2020-12-28T15:46:12Z
dc.date.available2020-12-28T15:46:12Z
dc.date.issued2003
dc.description.abstractWe have studied the matrilineal genetic composition of the Madeira and Açores north Atlantic archipelagos, which were settled by the Portuguese in the 15th century. Both archipelagos, and particularly Madeira, were involved in a complex commercial network established by the Portuguese, which included the trading of slaves across the Atlantic. One hundred and fifty-five mtDNAs sampled from the Madeira and 179 from the Açores archipelagos were analysed for the hypervariable segment I (HVS-I), and for haplogroup-diagnostic coding-region RFLPs. The different settlement histories of both groups of islands are well reflected in their present day mtDNA pool. Although both archipelagos show identical diversity values, they are clearly different in their haplogroup content. Madeira displays a stronger sub-Saharan imprint, with haplogroups L1-L3 constituting about 13% of the lineages. Also, the relative frequencies of L sub-clusters in Madeira and mainland Portugal suggests that, at least in part, African presence in Madeira can be attributed to a direct gene flow from West Africa and not via Portugal. A comparison of the genetic composition of these two archipelagos with the Canary Islands, specially taking into account that their European source population was essentially from the Iberian Peninsula, testifies the stronger impact of the North African U6 cluster in the Canaries. This group is present in Madeira at a moderate frequency, but very reduced in the Açores. Nevertheless the recorded introduction of Canary native Guanches, who are characterized by the presence of particular sub-clade U6b1, has left no detectable imprints in the present day population of Madeira.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBrehm, A., Pereira, L., Kivisild, T., & Amorim, A. (2003). Mitochondrial portraits of the Madeira and Açores archipelagos witness different genetic pools of its settlers. Human genetics, 114(1), 77-86.pt_PT
dc.identifier.doi10.1007/s00439-003-1024-3pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3046
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relationGENÉTICA POPULACIONAL DAS LINHAGENS FEMININAS E MASCULINAS DEFINIDAS POR DNA MITOCONDRIAL E CROMOSSOMA Y. ENQUADRAMENTO GEOGRÁFICO, HISTÓRICO, ESTATÍSTICO E FORENSE
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectDNApt_PT
dc.subjectDNA, Mitochondrialpt_PT
dc.subjectEuropean Continental Ancestry Grouppt_PT
dc.subjectGene Frequencypt_PT
dc.subjectGeographypt_PT
dc.subjectHaplotypespt_PT
dc.subjectHumanspt_PT
dc.subjectMalept_PT
dc.subjectMitochondriapt_PT
dc.subjectPortugalpt_PT
dc.subjectGene Poolpt_PT
dc.subjectAçores (Portugal)pt_PT
dc.subjectMadeira (Portugal)pt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências da Vidapt_PT
dc.titleMitochondrial portraits of the Madeira and Açores archipelagos witness different genetic pools of its settlerspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleGENÉTICA POPULACIONAL DAS LINHAGENS FEMININAS E MASCULINAS DEFINIDAS POR DNA MITOCONDRIAL E CROMOSSOMA Y. ENQUADRAMENTO GEOGRÁFICO, HISTÓRICO, ESTATÍSTICO E FORENSE
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F7121%2F2001/PT
oaire.citation.endPage86pt_PT
oaire.citation.startPage77pt_PT
oaire.citation.titleHuman Geneticspt_PT
oaire.citation.volume114(1)pt_PT
person.familyNameBrehm
person.givenNameAntonio
person.identifier.ciencia-id3613-8D1F-0EDF
person.identifier.orcid0000-0003-3168-5340
person.identifier.scopus-author-idAuthor ID 7006085833
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscovery62d279e2-247a-4652-a370-3e8c2a846e31
relation.isProjectOfPublicationda608f3f-4f59-493c-8d0e-59a223226bf9
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