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Title: Genetic differentiation of water buffalo ('Bubalus bubalis') populations in China, Nepal and south-east Asia: inferences on the region of domestication of the swamp buffalo
Contributor(s): Zhang, Y (author); Vankan, D (author); Zhang, Yuandan  (author); Barker, James S F  (author)
Publication Date: 2011
DOI: 10.1111/j.1365-2052.2010.02166.x
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Abstract: Data from three published studies of genetic variation at 18 microsatellite loci in water buffalo populations in China (18 swamp type, two river type), Nepal (one wild, one domestic river, one hybrid) and south-east Asia (eight swamp, three river) were combined so as to gain a broader understanding of genetic relationships among the populations and their demographic history. Mean numbers of alleles and expected heterozygosities were significantly different among populations. Estimates of θ (a measure of population differentiation) were significant among the swamp populations for all loci and among the river populations for most loci. Differentiation among the Chinese swamp populations (which was due primarily to just one population) was much less than among the south-east Asian. The Nepal wild animals, phenotypically swamp type but genetically like river type, are significantly different from all the domestic river populations and presumably represent the ancestral 'Bubalus arnee' (possibly with some river-type introgression). Relationships among the swamp populations (DA genetic distances, principal component analysis and structure analyses) show the south-east Asian populations separated into two groups by the Chinese populations. Given these relationships and the patterns of genetic variability, we postulate that the swamp buffalo was domesticated in the region of the far south of China, northern Thailand and Indochina. Following domestication, it spread south through peninsular Malaysia to Sumatra, Java and Sulawesi, and north through China, and then to Taiwan, the Philippines and Borneo.
Publication Type: Journal Article
Source of Publication: Animal Genetics, 42(4), p. 366-377
Publisher: Wiley-Blackwell Publishing Ltd
Place of Publication: United Kingdom
ISSN: 1365-2052
Field of Research (FOR): 060411 Population, Ecological and Evolutionary Genetics
060409 Molecular Evolution
Socio-Economic Objective (SEO): 830307 Minor Livestock (e.g. Alpacas, Ostriches, Crocodiles, Farmed Rabbits)
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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Appears in Collections:Animal Genetics and Breeding Unit (AGBU)
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