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The Eastern side of the Westernmost Europeans: Insights from subclades within Y‐chromosome haplogroup J‐M304
Author(s) -
Manco Licínio,
Albuquerque Joana,
Sousa Maria Francisca,
Martiniano Rui,
de Oliveira Ricardo Costa,
Marques Sofia,
Gomes Verónica,
Amorim António,
Alvarez Luís,
Prata Maria João
Publication year - 2017
Publication title -
american journal of human biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.559
H-Index - 81
eISSN - 1520-6300
pISSN - 1042-0533
DOI - 10.1002/ajhb.23082
Subject(s) - haplogroup , genetics , evolutionary biology , biology , hum , genealogy , geography , history , haplotype , gene , allele , performance art , art history
Objectives We examined internal lineages and haplotype diversity in Portuguese samples belonging to J‐M304 to improve the spatial and temporal understanding of the introduction of this haplogroup in Iberia, using the available knowledge about the phylogeography of its main branches, J1‐M267 and J2‐M172. Methods A total of 110 males of Portuguese descent were analyzed for 17 Y‐chromosome bi‐allelic markers and seven Y‐chromosome short tandem repeats (Y‐STR) loci. Results Among J1‐M267 individuals ( n = 36), five different sub‐haplogroups were identified, with the most common being J1a2b2‐L147.1 (∼72%), which encompassed the majority of representatives of the J1a2b‐P58 subclade. One sample belonged to the rare J1a1‐M365.1 lineage and presented a core Y‐STR haplotype consistent with the Iberian settlement during the fifth century by the Alans, a people of Iranian heritage. The analysis of J2‐M172 Portuguese males ( n = 74) enabled the detection of the two main subclades at very dissimilar frequencies, J2a‐M410 (∼80%) and J2b‐M12 (∼20%), among which the most common branches were J2a1(xJ2a1b,h)‐L26 (22.9%), J2a1b(xJ2a1b1)‐M67 (20.3%), J2a1h‐L24 (27%), and J2b2‐M241 (20.3%). Conclusions While previous inferences based on modern haplogroup J Y‐chromosomes implicated a main Neolithic dissemination, here we propose a later arrival of J lineages into Iberia using a combination of novel Portuguese Y‐chromosomal data and recent evidence from ancient DNA. Our analysis suggests that a substantial tranche of J1‐M267 lineages was likely carried into the Iberian Peninsula as a consequence of the trans‐Mediterranean contacts during the first millennium BC, while most of the J2‐M172 lineages may be associated with post‐Neolithic population movements within Europe.