Mitochondrial DNA polymorphism among alpine populations of Gammarus lacustris (Crustacea, Amphipoda)

1. Mitochondrial DNA sequence analysis was used to investigate the phylogeographic structure among populations of the amphipod Gammarus lacustris isolated in high altitude lakes from the Northern to the Southern Alps, and to investigate the historical and demographic events that may have accompanied...

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Bibliographic Details
Published in:Freshwater biology 1998-03, Vol.39 (2), p.259-265
Main Authors: MEYRAN, J. C, TABERLET, P
Format: Article
Language:English
Subjects:
Animals
Biodiversity
Biodiversity and Ecology
Biological and medical sciences
cytochrome-c oxidase
Ecology, environment
Environmental Sciences
Freshwater
Fundamental and applied biological sciences. Psychology
Gammarus
Gammarus lacustris
genes
Genetics of eukaryotes. Biological and molecular evolution
geographical variation
haplotypes
Invertebrata
lakes
Life Sciences
mitochondrial DNA
nucleotide sequences
Population genetics, reproduction patterns
sequence analysis
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Summary:1. Mitochondrial DNA sequence analysis was used to investigate the phylogeographic structure among populations of the amphipod Gammarus lacustris isolated in high altitude lakes from the Northern to the Southern Alps, and to investigate the historical and demographic events that may have accompanied this differentiation. 2. The comparison of a 376-base segment of the mitochondrial cytochrome c oxidase I gene in fifty-four specimens from nine different populations reveals no variation within populations. However, northern populations appear divergent from those from the Southern Alps. A particular population, located at the limit between the Northern and Southern Alps shows an intermediate haplotype related to the southern lineage. 3. Consideration of the different mitochondrial lineages, together with geographical differences among populations, suggests a scenario for the post-glacial colonization of G. lacustris in the alpine lakes.
ISSN:0046-5070
1365-2427
DOI:10.1046/j.1365-2427.1998.00277.x