Globally dispersed Y chromosomal haplotypes in wild and domestic sheep

Meadows, J R S; Hanotte, O; Drögemüller, Cord; Calvo, J; Godfrey, R; Coltman, D; Maddox, J F; Marzanov, N; Kantanen, J; Kijas, J W (2006). Globally dispersed Y chromosomal haplotypes in wild and domestic sheep. Animal genetics, 37(5), pp. 444-53. Oxford: Blackwell 10.1111/j.1365-2052.2006.01496.x

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To date, investigations of genetic diversity and the origins of domestication in sheep have utilised autosomal microsatellites and variation in the mitochondrial genome. We present the first analysis of both domestic and wild sheep using genetic markers residing on the ovine Y chromosome. Analysis of a single nucleotide polymorphism (oY1) in the SRY promoter region revealed that allele A-oY1 was present in all wild bighorn sheep (Ovis canadensis), two subspecies of thinhorn sheep (Ovis dalli), European Mouflon (Ovis musimon) and the Barbary (Ammontragis lervia). A-oY1 also had the highest frequency (71.4%) within 458 domestic sheep drawn from 65 breeds sampled from Africa, Asia, Australia, the Caribbean, Europe, the Middle East and Central Asia. Sequence analysis of a second locus, microsatellite SRYM18, revealed a compound repeat array displaying fixed differences, which identified bighorn and thinhorn sheep as distinct from the European Mouflon and domestic animals. Combined genotypic data identified 11 male-specific haplotypes that represented at least two separate lineages. Investigation of the geographical distribution of each haplotype revealed that one (H6) was both very common and widespread in the global sample of domestic breeds. The remaining haplotypes each displayed more restricted and informative distributions. For example, H5 was likely founded following the domestication of European breeds and was used to trace the recent transportation of animals to both the Caribbean and Australia. A high rate of Y chromosomal dispersal appears to have taken place during the development of domestic sheep as only 12.9% of the total observed variation was partitioned between major geographical regions.

Item Type:	Journal Article (Original Article)
Division/Institute:	05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Institute of Genetics
UniBE Contributor:	Drögemüller, Cord
ISSN:	0268-9146
Publisher:	Blackwell
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 14:45
Last Modified:	05 Dec 2022 14:13
Publisher DOI:	10.1111/j.1365-2052.2006.01496.x
PubMed ID:	16978172
Web of Science ID:	000240565900002
URI:	https://boris.unibe.ch/id/eprint/18472 (FactScience: 615)