Genetic structure of brown trout (Salmo trutta, L.) populations from south-western France: data from mitochondrial control region variability - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Molecular Ecology Année : 2001

Genetic structure of brown trout (Salmo trutta, L.) populations from south-western France: data from mitochondrial control region variability

Résumé

The genetic relationships between several French Atlantic populations of brown trout were analysed using polymerase chain reaction–single-strand conformation polymorphism and sequencing of two parts of the mitochondrial control region. Ten mitochondrial haplotypes were identified, separated by a small number of mutations. The distribution of these haplotypes confirmed our hypothesis of the existence of two genetically well-differentiated groups of populations in this area, which has already been suggested using nuclear markers. Nuclear and mitochondrial markers, however, show different patterns of genetic differentiation: some populations which belong to one group according to allozyme results appear to be part of the other when using mitochondrial DNA. The origin of these different forms is discussed; they seem to belong to the Atlantic grouping. Nevertheless, the hypothesis of an ancestral and a modern form suggested for northern populations does not appear valid in this particular case.

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Dates et versions

halsde-00332107 , version 1 (20-10-2008)

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Citer

D. Aurelle, Patrick Berrebi. Genetic structure of brown trout (Salmo trutta, L.) populations from south-western France: data from mitochondrial control region variability. Molecular Ecology, 2001, 10 (6), pp.1551 - 1561. ⟨10.1046/j.1365-294X.2001.01293.x⟩. ⟨halsde-00332107⟩
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