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Peopling of three Mediterranean Islands (Corsica, Sardinia, and Sicily) inferred by Y-chromosome biallelic variability

Francalacci, Paolo and Morelli, Laura Cornelia Clotilde and Underhill, Peter A. and Lillie, Anita S. and Passarino, Giuseppe and Useli, Antonella and Madeddu, Roberto Beniamino and Paoli, Giorgio and Tofanelli, Sergio and Calò, Carla M. and Ghiani, Maria Elena and Varesi, Laurent and Memmi, Marc and Vona, Giuseppe and Lin, Alice A. and Oefner, Peter and Cavalli-Sforza, Luca (2003) Peopling of three Mediterranean Islands (Corsica, Sardinia, and Sicily) inferred by Y-chromosome biallelic variability. American Journal of Physical Anthropology, Vol. 121 (3), p. 270-279. eISSN 1096-8644. Article.

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DOI: 10.1002/ajpa.10265


chromosome variability in a sample from the Mediterranean islands of Corsica and Sicily, and compared with data on Sardinia to gain insights into the ethnogenesis of these island populations. The results were interpreted in a broader Mediterranean context by including in the analysis neighboring populations previously studied with the same methodology. All samples studied were enclosed in the comparable spectrum of European Y-chromosome variability. Pronounced differences were observed between the islands as well as in the percentages of haplotypes previously shown to have distinctive patterns of continental phylogeography. Approximately 60% of the Sicilian haplotypes are also prevalent in Southern Italy and Greece. Conversely, the Corsican sample had elevated levels of alternative haplotypes common in Northern Italy. Sardinia showed a haplotype ratio similar to that observed in Corsica, but with a remarkable difference in the presence of a lineage defined by marker M26, which approaches 35% in Sardinia but seems absent in Corsica. Although geographically adjacent, the data suggest different colonization histories and a minimal amount of recent gene flow between them. Our results identify possible ancestral continental sources of the various island populations and underscore the influence of founder effect and genetic drift. The Y-chromosome data are consistent with comparable mtDNA data at the RFLP haplogroup level of resolution, as well as linguistic and historic knowledge.

Item Type:Article
ID Code:3973
Uncontrolled Keywords:Y-chromosome, population genetics, Mediterranean populations
Subjects:Area 05 - Scienze biologiche > BIO/17 Istologia
Area 05 - Scienze biologiche > BIO/18 Genetica
Divisions:001 Università di Sassari > 01 Dipartimenti > Zoologia e genetica evoluzionistica
Publisher Policy:© 2003 Wiley-Liss
Deposited On:27 May 2010 09:51

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