Depauperated gene pools in Marmota m. marmota are caused by an ancient bottleneck: electrophoretic analysis of wild populations from Austria and Switzerland

• Autorzy: Preleuthner M. , Pinsker W.
• Języki publikacji: EN

Abstrakty

EN

Samples from 15 populations of the Alpine marmot Marmota m. marmota (Linnaeus, 1758) were surveyed electrophoretically for allozyme variation. Only 2 out of 50 enzyme loci showed polymorphism. Average heterozygosity was found to be low with 1.2%. No rare alleles were detected among the 8430 genes examined. The geographic variation at the two polymorphic loci (Pep-1 and Sod-1) was analysed in more detail. The distribution pattern of the allele frequencies indicates genetic differentiation between autochthonous and introduced populations. No striking deviations of the genotype distributions from Hardy-Weinberg equilibrium were observed. Thus the population structure is apparently not affected by inbreeding. The obviously diminished genetic variation and the geographic pattern of the allele frequencies at the two variable loci can be best explained by assuming a severe bottleneck in the recent past.

Słowa kluczowe

EN

bottleneck; gene pool; Alpine marmot; Switzerland; electrophoresis; Marmota marmota; polymorphic locus; introduced population; allozyme variation; autochthonous population; wild population; geographic differentiation; Austria; diminished variation; differentiation

• Wydawca: -
• Czasopismo: Acta Theriologica. Supplement
• Rocznik: 1993
• Tom: 38
• Numer: 2
• Opis fizyczny: p.121-139,fig.,

Twórcy

autor

Preleuthner M.

• Universitat fur Bodenkultur Wien, Peter Jordan Strasse 76, A-1190 Vienna, Austria

autor

Pinsker W.

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