Genetic diversity of 15 autosomal STRs in a sample of Berbers from Aurès region in the Northeast of Algeria and genetic relationships with other neighbouring samples

Abdeli, Amine; Benhassine, Traki

doi:10.1080/03014460.2020.1736628

Cited by 3 publications

(2 citation statements)

References 36 publications

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“…To that effect, we have analyzed 264 mitogenomes of individuals from the Chaoui Amazigh population. The Chaoui Imazighen inhabit the Aurès mountainous region in North Eastern Algeria, and despite being one of the largest Amazigh populations in North Africa, just two genetic studies analyzing Y-chromosome and autosomal STRs have covered this population 24 , 25 . We focus on the mtDNA diversity observed in three different localities in the Aurès region and analyze the time and geographic origin of the maternal lineages in our dataset.…”

Section: Introductionmentioning

confidence: 99%

Whole mitogenomes reveal that NW Africa has acted both as a source and a destination for multiple human movements

Aizpurua-Iraola

Abdeli

Benhassine

et al. 2023

Sci Rep

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Despite being enclosed between the Mediterranean Sea and the Sahara Desert, North Africa has been the scenario of multiple human migrations that have shaped the genetic structure of its present-day populations. Despite its richness, North Africa remains underrepresented in genomic studies. To overcome this, we have sequenced and analyzed 264 mitogenomes from the Algerian Chaoui-speaking Imazighen (a.k.a. Berbers) living in the Aurès region. The maternal genetic composition of the Aurès is similar to Arab populations in the region, dominated by West Eurasian lineages with a moderate presence of M1/U6 North African and L sub-Saharan lineages. When focusing on the time and geographic origin of the North African specific clades within the non-autochthonous haplogroups, different geographical neighboring regions contributed to the North African maternal gene pool during time periods that could be attributed to previously suggested admixture events in the region, since Paleolithic times to recent historical movements such as the Arabization. We have also observed the role of North Africa as a source of geneflow mainly in Southern European regions since Neolithic times. Finally, the present work constitutes an effort to increase the representation of North African populations in genetic databases, which is key to understand their history.

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Section: Introductionmentioning

confidence: 99%

Whole mitogenomes reveal that NW Africa has acted both as a source and a destination for multiple human movements

Aizpurua-Iraola

Abdeli

Benhassine

et al. 2023

Sci Rep

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“…Samples from five Algerian groups were collected from: Amazigh individuals from the cities of Batna (n = 47), Oum El Bouaghi (n = 47) and Khenchela (n = 39) 32 , 33 , 60 , 61 , Mozabite Amazigh individuals from Ghardaïa (n = 16) and Arab individuals from Algiers (n = 40) 32 . The cities of Batna, Oum El Bouaghi and Khenchela are the capitals of the wilayas (provinces) of the same name, located in the mountainous region of the Aurès in Northeastern Algeria, characterized by a rugged topography 54 .…”

Section: Methodsmentioning

confidence: 99%

Understanding the genomic heterogeneity of North African Imazighen: from broad to microgeographical perspectives

Vilà-Valls,

Abdeli,

Lucas-Sánchez

et al. 2024

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The strategic location of North Africa has led to cultural and demographic shifts, shaping its genetic structure. Historical migrations brought different genetic components that are evident in present-day North African genomes, along with autochthonous components. The Imazighen (plural of Amazigh) are believed to be the descendants of autochthonous North Africans and speak various Amazigh languages, which belong to the Afro-Asiatic language family. However, the arrival of different human groups, especially during the Arab conquest, caused cultural and linguistic changes in local populations, increasing their heterogeneity. We aim to characterize the genetic structure of the region, using the largest Amazigh dataset to date and other reference samples. Our findings indicate microgeographical genetic heterogeneity among Amazigh populations, modeled by various admixture waves and different effective population sizes. A first admixture wave is detected group-wide around the twelfth century, whereas a second wave appears in some Amazigh groups around the nineteenth century. These events involved populations with higher genetic ancestry from south of the Sahara compared to the current North Africans. A plausible explanation would be the historical trans-Saharan slave trade, which lasted from the Roman times to the nineteenth century. Furthermore, our investigation shows that assortative mating in North Africa has been rare.

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Genetic analysis based on 15 autosomal short tandem repeats (STRs) in the Chaouia population, western center Morocco, and genetic relationships with worldwide populations

et al. 2023

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Genetic diversity of 15 autosomal STRs in a sample of Berbers from Aurès region in the Northeast of Algeria and genetic relationships with other neighbouring samples

Cited by 3 publications

References 36 publications

Whole mitogenomes reveal that NW Africa has acted both as a source and a destination for multiple human movements

Whole mitogenomes reveal that NW Africa has acted both as a source and a destination for multiple human movements

Understanding the genomic heterogeneity of North African Imazighen: from broad to microgeographical perspectives

Genetic analysis based on 15 autosomal short tandem repeats (STRs) in the Chaouia population, western center Morocco, and genetic relationships with worldwide populations

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