Present address: Ethology, Evolution, Ecology, UMR 6552, University of Rennes I, F-35042, Rennes Cedex, France
Mitochondrial DNA variation along an altitudinal gradient in the greater white-toothed shrew, Crocidura russula
Article first published online: 29 APR 2002
Volume 11, Issue 5, pages 939–945, May 2002
How to Cite
Ehinger, M., Fontanillas, P., Petit, E. and Perrin, N. (2002), Mitochondrial DNA variation along an altitudinal gradient in the greater white-toothed shrew, Crocidura russula. Molecular Ecology, 11: 939–945. doi: 10.1046/j.1365-294X.2002.01487.x
This work is part of a research programme on the evolutionary ecology of dispersal and mating strategies, initiated by N Perrin (http://www.unil.ch/izea/research.html#crussula). C. russula is currently our model organism owing to its breeding-system peculiarities, including monogamy and female-biased dispersal. M Ehinger completed her master degree on the topics presented here, in collaboration with P Fontanillas (PhD student) and E Petit (postdoctoral).
- Issue published online: 29 APR 2002
- Article first published online: 29 APR 2002
- Received 19 July 2001; revision received 17 January 2002; accepted 17 January 2002
- genetic drift;
- historical events;
- range expansion;
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.