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Selected Publication:

Type of publication: Journal Article
Type of document: Full Paper

Year: 2000

Authors: Bruns, U; Haiden, A; Suchentrunk, F

Title: Allozyme variability in autochtonous colonies of Swiss Alpine marmots (Marmota m. marmota): A confirmation of the "species-wide bottleneck hypothesis"?.

Source: Folia Zoologica (48) 11-22.

Authors Vetmeduni Vienna:

Bruns Ute
Suchentrunk Franz

Vetmed Research Units
Research Institute of Wildlife Ecology

Allozymic variability of 303 Alpine marmots (Marmota m. marmota) from three local populations of the Swiss canton Grisons was studied by horizontal starch gel electrophoresis to corroborate or refute the "species-wide bottleneck hypothesis" of this species. This hypothesis has previously been suggested in order to explain the low genetic variability on the allozyme level found so far in all regional populations of this species (P r e l e u t h n e r & P i n s k e r 1993). Based on 25.436 genes presently studied, polymorphism was found at eight of 48 loci screened. All polymorphic loci were diallelic. Overall rate of polymorphism (16.7%) was significantly higher than the value based on all populations screened earlier from the Eastern and from parts of the Western Alps. Population-specific rates of polymorphism (8.33 - 14.58 %), expected heterozygosities (2.3 - 3.8 %) and H-e/ P -rates were well within the ranges found in many terrestrian mammalian species without obvious bottleneck history. These results contradict the "species-wide bottleneck hypothesis" of Alpine marmots.

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