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Subsistence strategy was the main factor driving population differentiation in the bidirectional corridor of the African Sahel

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00007064%3AK01__%2F20%3AN0000100" target="_blank" >RIV/00007064:K01__/20:N0000100 - isvavai.cz</a>

  • Výsledek na webu

    <a href="https://doi.org/10.1002/ajpa.24001" target="_blank" >https://doi.org/10.1002/ajpa.24001</a>

  • DOI - Digital Object Identifier

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Subsistence strategy was the main factor driving population differentiation in the bidirectional corridor of the African Sahel

  • Popis výsledku v původním jazyce

    The Sahel belt is occupied by populations who use two types of subsistence strategy, nomadic pastoralism and sedentary farming, and who belong to three linguistic families, Niger‐Congo, Nilo‐Saharan, and Afro‐Asiatic. Little is known, however, about the origins of these two populations and their mutual genetic relationships. We have built a large dataset of mitochondrial DNA sequences and Y chromosomal STR haplotypes of pastoralists and farmers belonging to all three linguistic phyla in the western, central, and eastern parts of the Sahel. We calculated pairwise genetic, geographic, and linguistic distances between populations and analyzed the effects of geography, language, and subsistence on population genetic structure. We found that subsistence mode significantly contributed to the generally low population structure in the Sahel and that language affiliation plays a more important role for pastoralists than for farmers. We also demonstrated that geographic isolation significantly influenced the population structure of sedentary farmers but not of nomadic pastoralists. Finally, we found haplotypes shared between the Fulani and Arabic‐speaking Baggara, supporting the theory of Baggarization, which explains the recent adaptation of Arabic‐speaking nomads in the Sahel region through contact with autochthonous sub‐Saharan populations. Based on various genetic and archaeological evidence pertaining to the Sahel, we suggest that the idea of a bidirectional Sahelian corridor is valid, but that pastoralists made a more important contribution to its population structure. It is also possible that agropastoralists diverged into farmers and pastoralists in the early stages of formation of the Sahelian gene pool.

  • Název v anglickém jazyce

    Subsistence strategy was the main factor driving population differentiation in the bidirectional corridor of the African Sahel

  • Popis výsledku anglicky

    The Sahel belt is occupied by populations who use two types of subsistence strategy, nomadic pastoralism and sedentary farming, and who belong to three linguistic families, Niger‐Congo, Nilo‐Saharan, and Afro‐Asiatic. Little is known, however, about the origins of these two populations and their mutual genetic relationships. We have built a large dataset of mitochondrial DNA sequences and Y chromosomal STR haplotypes of pastoralists and farmers belonging to all three linguistic phyla in the western, central, and eastern parts of the Sahel. We calculated pairwise genetic, geographic, and linguistic distances between populations and analyzed the effects of geography, language, and subsistence on population genetic structure. We found that subsistence mode significantly contributed to the generally low population structure in the Sahel and that language affiliation plays a more important role for pastoralists than for farmers. We also demonstrated that geographic isolation significantly influenced the population structure of sedentary farmers but not of nomadic pastoralists. Finally, we found haplotypes shared between the Fulani and Arabic‐speaking Baggara, supporting the theory of Baggarization, which explains the recent adaptation of Arabic‐speaking nomads in the Sahel region through contact with autochthonous sub‐Saharan populations. Based on various genetic and archaeological evidence pertaining to the Sahel, we suggest that the idea of a bidirectional Sahelian corridor is valid, but that pastoralists made a more important contribution to its population structure. It is also possible that agropastoralists diverged into farmers and pastoralists in the early stages of formation of the Sahelian gene pool.

Klasifikace

  • Druh

    J<sub>SC</sub> - Článek v periodiku v databázi SCOPUS

  • CEP obor

  • OECD FORD obor

    50502 - Criminology, penology

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/VI20162020015" target="_blank" >VI20162020015: Zavedení nových metod identifikace lidského, zvířecího a rostlinného materiálu do forenzní praxe při dokazování trestných činů</a><br>

  • Návaznosti

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Ostatní

  • Rok uplatnění

    2020

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název periodika

    American Journal of Physical Anthropology

  • ISSN

    1096-8644

  • e-ISSN

  • Svazek periodika

    171

  • Číslo periodika v rámci svazku

    3

  • Stát vydavatele periodika

    US - Spojené státy americké

  • Počet stran výsledku

    13

  • Strana od-do

    496-508

  • Kód UT WoS článku

  • EID výsledku v databázi Scopus

    2-s2.0-85078021478