Article: article from journal or magazin.
Mitochondrial DNA variation along an altitudinal gradient in the greater white-toothed shrew, Crocidura russula.
Publication types: Journal Article ; Research Support, Non-U.S. Gov't Publication Status: ppublish
The distribution of mitochondrial control region-sequence polymorphism was investigated in 15 populations of Crocidura russula along an altitudinal gradient in western Switzerland. High-altitude populations are smaller, sparser and appear to undergo frequent bottlenecks. Accordingly, they showed a loss of rare haplotypes, but unexpectedly, were less differentiated than lowland populations. Furthermore, the major haplotypes segregated significantly with altitude. The results were inconsistent with a simple model of drift and dispersal. They suggested instead a role for historical patterns of colonization, or, alternatively, present-day selective forces acting on one of the mitochondrial genes involved in metabolic pathways.
Altitude, Animals, Base Sequence, DNA, Mitochondrial/chemistry, DNA, Mitochondrial/genetics, Genetic Variation, Haplotypes, Locus Control Region/genetics, Molecular Sequence Data, Sequence Analysis, DNA, Shrews/genetics, Switzerland
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