The African contribution to the present-day population of the Azores islands (Portugal): Analysis of the Y chromosome haplogroup E

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Domingos Neto (Author) Other; Rafael Montiel (Author) Other; Conceicao Bettencourt (Author) Other; Cristina Santos (Author) Other; Maria J Prata (Author) FCUP; Manuela Lima (Author) Other

Journal

Title: American Journal of Human Biology

Vol. 19

Pages: 854-860

ISSN: 1042-0533

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 7 Citations

Scientific classification

FOS: Natural sciences > Biological sciences

Other information

Authenticus ID: P-004-6C3

DOI: 10.1002/ajhb.20651

Abstract (EN): Among the settlers that, from 1432 onwards, arrived to the Azores Islands were individuals of North and sub-Saharan African origin. A previous study of markers of the Y chromosome revealed that haplogroup E is the second more frequent in the Azores (13%). Since this haplogroup is heterogeneous and may contain subtypes of African or non-African origin, we analyzed an extended sample of 319 Azoreans, originating from the three groups of islands (Eastern, Central, and Western), to evaluate the African contribution to the present-day population of the Azores. Samples belonging to the E clade were distributed into six haplogroups, from which the most frequent was E3b1a, representing 47.2% of the E chromosomes (6.3%0 of the total sample). The sub-Saharan haplogroup E3a was found in 7.1% of E chromosomes (0.9% of the total), corresponding to the highest frequency reported so far in a Portuguese population. No significant differences were detected in the haplogroup distribution among groups of islands, as well as between Azores and most of other European populations compared. The present-day representation of sub-Saharan lineages in Azores, although reduced, is higher than in other Portuguese populations, where the demographic representation of sub-Saharan slaves is reported as similar.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7