Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 483508
Title Effects of Isolation and human-mediated introgression in shaping the genomic distinctiveness of an insular large mammal
Author(s) Iacolina, L.; Scandura, M.; Goedbloed, D.J.; Alexandri, P.; Crooijmans, R.P.M.A.; Larson, G.; Groenen, M.; Megens, H.J.W.C.
Event Livestock Genomic Resources in a Changing World Conference, Cardiff, UK, 2014-06-17/2014-06-19
Department(s) Resource Ecology
Animal Breeding and Genetics
WIAS
Publication type Abstract in scientific journal or proceedings
Publication year 2014
Abstract The evolution of island populations in natural systems is driven by local adaptation and genetic drift. However humans can affect evolutionary pathways in several ways, especially in managed species. The wild boar (Sus scrofa) is an iconic game species and is highly managed throughout its distribution range, including islands where it was introduced in prehistoric times. We examined the current genomic diversity of the Sardinian wild boar population analysing the variation at 49,803 SNPs in 99 wild boars collected throughout the island and comparing them with 196 mainland wild specimens and 105 domestic pigs belonging to 11 breeds. The analysis of SNP data by Bayesian clustering approaches and Allele Frequency Spectrum Assessment revealed that the Sardinian wild boar population is highly differentiated from the other European populations (FST = 0.126 - 0.138), and from domestic pigs, including local free-ranging stocks (FST = 0.169). Signatures of introgression were investigated by different methods and detected in 6% of the Sardinian sample. The removal of these introgressed individuals changed only slightly the distinctiveness of the Sardinian population and its overall levels of genomic variation, part of which showed possible signs of local adaptation. The patterns of diversity emerging from our analyses suggest a long history of isolation and demographic stability of the population, followed by more recent admixture. This study confirms the usefulness of genome-wide genotyping in recognizing native versus exotic sources of genetic variation in wild populations and opens new perspectives towards the understanding of microevolutionary processes in managed species
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