Maternal and paternal genetic diversity of ancient sheep in Estonia from the Late Bronze Age to the post-medieval period and comparison with other regions in Eurasia

Autor:	N Kadõrova, Juha Kantanen, Liina Maldre, Urmas Saarma, Lembi Lõugas, Eve Rannamäe, Marianna Niemi
Rok vydání:	2016
Předmět:	Estonia Male 0301 basic medicine Mitochondrial DNA Asia Zoology Context (language use) Breeding Biology DNA Mitochondrial Haplogroup 03 medical and health sciences Bronze Age Y Chromosome Genetics Animals Domestication Finland Sheep Domestic Genetic diversity Sheep Haplotype Genetic Variation Sequence Analysis DNA General Medicine Europe Phylogeography Genetics Population 030104 developmental biology Ancient DNA Haplotypes Animal Science and Zoology
Zdroj:	Animal Genetics. 47:208-218
ISSN:	0268-9146
DOI:	10.1111/age.12407
Popis:	Summary Sheep were among the first domesticated animals to appear in Estonia in the late Neolithic and became one of the most widespread livestock species in the region from the Late Bronze Age onwards. However, the origin and historical expansion of local sheep populations in Estonia remain poorly understood. Here, we analysed fragments of the hypervariable D-loop of mitochondrial DNA (mtDNA; 213 bp) and the Y-chromosome SRY gene (130 bp) extracted from 31 archaeological sheep bones dated from approximately 800 BC to 1700 AD. The ancient DNA data of sheep from Estonia were compared with ancient sheep from Finland as well as a set of contemporary sheep breeds from across Eurasia in order to place them in a wider phylogeographical context. The analysis shows that: (i) 24 successfully amplified and analysed mtDNA sequences of ancient sheep cluster into two haplogroups, A and B, of which B is predominant; (ii) four of the ancient mtDNA haplotypes are novel; (iii) higher mtDNA haplotype diversity occurred during the Middle Ages as compared to other periods, a fact concordant with the historical context of expanding international trade during the Middle Ages; (iv) the proportion of rarer haplotypes declined during the expansion of sheep from the Near Eastern domestication centre to the northern European region; (v) three male samples showed the presence of the characteristic northern European haplotype, SNP G-oY1 of the Y-chromosome, and represent the earliest occurrence of this haplotype. Our results provide the first insight into the genetic diversity and phylogeographical background of ancient sheep in Estonia and provide basis for further studies on the temporal fluctuations of ancient sheep populations.
Databáze:	OpenAIRE
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