Mitochondrial and nuclear DNA analyses reveal pronounced genetic structuring in Tunisian wild boar <Emphasis Type="Italic">Sus scrofa</Emphasis> |
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Authors: | Ghaiet El Mouna Hajji Frank E Zachos |
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Institution: | (1) Zoological Institute, Christian-Albrechts-University, Olshausenstrasse 40, 24118 Kiel, Germany |
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Abstract: | We analysed 74 wild boars from Tunisia with respect to patterns of genetic differentiation and diversity based on sequences
of the mitochondrial control region and genotypes at eight nuclear microsatellite loci. Analysis of molecular variance for
both marker systems and Bayesian structure analysis of our microsatellite data revealed a clear break between northern and
southern populations. Southern wild boar were monomorphic for one of three mtDNA haplotypes; the other two (one of which only
occurred in three individuals) were confined to the north. A comparison with published sequences showed all three haplotypes
to belong to the major European clade E1. Microsatellite diversity was similar to that found in earlier studies of wild boar
(expected heterozygosity of 0.695 and 0.597 for the north and south, respectively). Contrary to the mtDNA results, we did
not find unequivocal evidence of a bottleneck in Tunisian wild boar based on our microsatellite data. The clear distinction
between northern and southern populations may be due to an Algerian origin of the southern animals. |
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