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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
The trans-Saharan slave trade - Clues from interpolation analyses and high-resolution characterization of mitochondrial DNA lineages
BMC Evolutionary Biology, Volume 10, No. 1, Article 138, Year 2010
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Description
Background. A proportion of 1/4 to 1/2 of North African female pool is made of typical sub-Saharan lineages, in higher frequencies as geographic proximity to sub-Saharan Africa increases. The Sahara was a strong geographical barrier against gene flow, at least since 5,000 years ago, when desertification affected a larger region, but the Arab trans-Saharan slave trade could have facilitate enormously this migration of lineages. Till now, the genetic consequences of these forced trans-Saharan movements of people have not been ascertained. Results. The distribution of the main L haplogroups in North Africa clearly reflects the known trans-Saharan slave routes: West is dominated by L1b, L2b, L2c, L2d, L3b and L3d; the Center by L3e and some L3f and L3w; the East by L0a, L3h, L3i, L3x and, in common with the Center, L3f and L3w; while, L2a is almost everywhere. Ages for the haplogroups observed in both sides of the Saharan desert testify the recent origin (holocenic) of these haplogroups in sub-Saharan Africa, claiming a recent introduction in North Africa, further strengthened by the no detection of local expansions. Conclusions. The interpolation analyses and complete sequencing of present mtDNA sub-Saharan lineages observed in North Africa support the genetic impact of recent trans-Saharan migrations, namely the slave trade initiated by the Arab conquest of North Africa in the seventh century. Sub-Saharan people did not leave traces in the North African maternal gene pool for the time of its settlement, some 40,000 years ago. © 2010 Harich et al; licensee BioMed Central Ltd.
Available Materials
https://efashare.b-cdn.net/share/pmc/articles/PMC2875235/bin/1471-2148-10-138-S1.DOC
https://efashare.b-cdn.net/share/pmc/articles/PMC2875235/bin/1471-2148-10-138-S2.XLS
https://efashare.b-cdn.net/share/pmc/articles/PMC2875235/bin/1471-2148-10-138-S3.DOC
Authors & Co-Authors
Harich, Nourdin
Morocco, El Jadida
Faculté Des Sciences D'el Jadida
Costa, Marta Daniela
Portugal, Porto
Universidade do Porto
United Kingdom, Leeds
University of Leeds
Fernandes, Verónica
Portugal, Porto
Universidade do Porto
United Kingdom, Leeds
University of Leeds
Kandil, Mostafa
Morocco, El Jadida
Faculté Des Sciences D'el Jadida
Pereira, Joana Barbosa
Portugal, Porto
Universidade do Porto
United Kingdom, Leeds
University of Leeds
Silva, Nuno Miguel
Portugal, Porto
Universidade do Porto
Pereira, Luísa
Portugal, Porto
Universidade do Porto
Portugal, Porto
Faculdade de Medicina da Universidade do Porto Fmup
Statistics
Citations: 68
Authors: 7
Affiliations: 4
Identifiers
Doi:
10.1186/1471-2148-10-138
e-ISSN:
14712148
Research Areas
Genetics And Genomics
Maternal And Child Health
Study Locations
Multi-countries
Participants Gender
Female