History and genetic diversity of African sheep : Contrasting phenotypic and genomic diversity
Da Silva, Anne (University of Limoges)
Ahbara, Abulgasim (Misurata University)
Baazaoui, Imen (Centre de Recerca en Agrigenòmica)
Jemaa, Slim Ben (University of Carthage)
Cao, Yinhong (Chinese Academy of Sciences. Institute of Zoology)
Ciani, Elena (Università degli Studi di Bari Aldo Moro)
Dzomba, Edgar Farai (University of KwaZulu-Natal)
Evans, Linda (Macquarie University)
Gootwine, Elisha (Volcani Center. Institute of Animal Science)
Hanotte, Olivier (The University of Nottingham)
Harris, Laura (Macquarie University)
Li, Meng-Hua (China Agricultural University)
Mastrangelo, Salvatore (University of Palermo)
Missohou, Ayao (Inter-State School of Veterinary Science and Medicine (EISMV))
Molotsi, Annelin (Stellenbosch University)
Muchadeyi, Farai C. (Agricultural Research Council (South Africa))
Mwacharo, Joram M. (International Center for Agricultural Research in the Dry Areas (ICARDA))
Tallet, Gaëlle (University of Paris 1)
Vernus, Pascal (École Pratique des Hautes Études)
Hall, Stephen (Estonian University of Life Sciences)
Lenstra, Johannes A. (Utrecht University)

Data:	2024
Resum:	Domesticated sheep have adapted to contrasting and extreme environments and continue to play important roles in local community-based economies throughout Africa. Here we review the Neolithic migrations of thin-tailed sheep and the later introductions of fat-tailed sheep into eastern Africa. According to contemporary pictorial evidence, the latter occurred in Egypt not before the Ptolemaic period (305-25 BCE). We further describe the more recent history of sheep in Egypt, the Maghreb, west and central Africa, central-east Africa, and southern Africa. We also present a comprehensive molecular survey based on the analysis of 50 K SNP genotypes for 59 African breeds contributed by several laboratories. We propose that gene flow and import of fat-tailed sheep have partially overwritten the diversity profile created by the initial migration. We found a genetic contrast between sheep north and south of the Sahara and a west-east contrast of thin- and fat-tailed sheep. There is no close relationship between African and central and east Asian fat-tailed breeds, whereas we observe within Africa only a modest effect of tail types on breed relationships.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Adaptation ; Africa ; Fat tail ; History ; Phylogeography ; Sheep ; Thin tail
Publicat a:	Animal genetics, Vol. 56, Issue 1 (February 2025) , art. e13488, ISSN 1365-2052

DOI: 10.1111/age.13488
PMID: 39561986

21 p, 2.6 MB

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