Journal
JOURNAL OF ANIMAL BREEDING AND GENETICS
Volume 132, Issue 5, Pages 399-405Publisher
WILEY
DOI: 10.1111/jbg.12144
Keywords
Djallonke sheep; Sahelian sheep; mitochondrial genome; evolution
Categories
Funding
- National Key Basic Research Program of China [2014CB138501]
- Domain-specific Projects for Transgenic Biological Breeding [2014ZX08009-002]
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Notable diversity observed within African ovine breeds makes them of great interests, but limited studies on genetic origins and domestications remain poorly understood. Here, we investigate the evolutionary status of West African native breeds, Djallonke and Sahelian sheep using mitogenome sequencing. Compared with other ovine mitogenome sequences, West African sheep were revealed a Eurasian origin, and the initially tamed sheep breeds in West Africa have been genetically mixed with each other and mixed with European breeds. Worldwide domestic sheep is deemed the Eurasian origin and migrated west to Europe and Africa and east to the Far East, in which dispersed and received selection for acclimation to autochthonic environment independently and ultimately evolved into different native breeds, respectively. Our results contribute to the comprehensive understanding of the domestic sheep origin and reveal multiple postdomestication genetic amelioration processes.
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