Type

Journal Article

Authors

Ceiridwen Edwards
Louis du Plessis
Valentin Dumitrascu
Vesna Dimitrijevic
Cleia Detry
Bea De Cupere
Richard Crooijmans
Mike Church
John Chapman
José-Miguel Carretero
and 26 others

Subjects

Biology

Topics
evolution near east gene flow pigs neolithic genomic domestication europe

Ancient pigs reveal a near-complete genomic turnover following their introduction to Europe (2019)

Abstract Archaeological evidence indicates that pig domestication had begun by ∼10,500 y before the present (BP) in the Near East, and mitochondrial DNA (mtDNA) suggests that pigs arrived in Europe alongside farmers ∼8,500 y BP. A few thousand years after the introduction of Near Eastern pigs into Europe, however, their characteristic mtDNA signature disappeared and was replaced by haplotypes associated with European wild boars. This turnover could be accounted for by substantial gene flow from local European wild boars, although it is also possible that European wild boars were domesticated independently without any genetic contribution from the Near East. To test these hypotheses, we obtained mtDNA sequences from 2,099 modern and ancient pig samples and 63 nuclear ancient genomes from Near Eastern and European pigs. Our analyses revealed that European domestic pigs dating from 7,100 to 6,000 y BP possessed both Near Eastern and European nuclear ancestry, while later pigs possessed no more than 4% Near Eastern ancestry, indicating that gene flow from European wild boars resulted in a near-complete disappearance of Near East ancestry. In addition, we demonstrate that a variant at a locus encoding black coat color likely originated in the Near East and persisted in European pigs. Altogether, our results indicate that while pigs were not independently domesticated in Europe, the vast majority of human-mediated selection over the past 5,000 y focused on the genomic fraction derived from the European wild boars, and not on the fraction that was selected by early Neolithic farmers over the first 2,500 y of the domestication process.
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Full list of authors on original publication

Ceiridwen Edwards, Louis du Plessis, Valentin Dumitrascu, Vesna Dimitrijevic, Cleia Detry, Bea De Cupere, Richard Crooijmans, Mike Church, John Chapman, José-Miguel Carretero and 26 others

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