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The Use of different genetic markers to investigate the genetic distinctiveness of the Sardinian wild boar population

Iacolina, Laura and Scandura, Massimo and Megens, Hendrik Jan and Biosa, Daniela and Crooijmans, Richard P.M.A. and Rund, L. and Groenen, Martien A.M. and Schook, Lawrence B. and Bertorelle, Giorgio and Apollonio, Marco (2012) The Use of different genetic markers to investigate the genetic distinctiveness of the Sardinian wild boar population. Mammalian Biology, Vol. 77 , p. 11. eISSN 1618-1476. Article.

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DOI: 10.1016/j.mambio.2012.07.005

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The Sardinian wild boar is believed to inhabit the island since the Early Neolithic and is currently recognized as a different subspecies (Sus scrofa meridionalis), but after the Second World War translocations of non-native wild boars have been reported. To identify the current status of the genetic diversity of the Sardinian wild boar population, we compared genetic diversity of the wild boar population throughout Europe with a sample of domestic pigs using three different classes of molecular markers: (1) 411-bp sequences of the D-loop region of the mitochondrial DNA, (2) 16 autosomal microsatellites, (3) genome wide scan of 60,000 SNPs (60KSNPs Illumina Beadchip). D-loop data showed that the Sardinian population shares a mtDNA lineage only present here and in peninsular Italy, with a high percentage of private haplotypes. Microsatellite data showed a clear genetic divergence of the population from all mainland populations (FST = 0.065) and from domestic pigs (FST = 0.074). A sharp genetic structure was also found within the island. SNP data confirmed the genetic distinctiveness of the Sardinian population from both other wild boars (FST = 0.081) and domestic pig breeds (FST = 0.130). Both microsatellites and SNPs highlighted a signature of moderate and localized genetic introgression from mainland wild boars (both Italian and European) and from local domestic breeds. Our results demonstrate that the Sardinian wild boar population still shows significant divergence at both mitochondrial and nuclear loci, supporting its classification as a different subspecies and stimulating further investigations on possible genetic effects of local selective forces.

Item Type:Article
ID Code:8135
Uncontrolled Keywords:Wild boar, genetic distinctiveness, Sardinia
Subjects:Area 05 - Scienze biologiche > BIO/05 Zoologia
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Scienze della Natura e del Territorio
Additional Information:Oral communication presented at the 86. Annual meeting of the German Society of Mammalogy, Frankfurt a. M., 4-8 September 2012.
Deposited On:06 May 2013 17:39

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