The genetics of sympatric Arctic charr [Salvelinus alpinus (L.)] populations from Loch Rannoch, Scotland |
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| Authors: | S E Hartley C McGowan † R B Greek † A F Walker ‡ |
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| Institution: | Department of Biological and Molecular Sciences, School of Natural Sciences, University of Stirling, Stirling FK9 4LA, U.K.;Department of Biochemistry, Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1B 3X9, U.K.;Scottish Office Agriculture and Fisheries Department, Freshwater Fisheries Laboratory, Faskally, Pitlochry PH16 5LB, U.K. |
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| Abstract: | Two morphologically and ecologically distinct forms of Arctic charr, Salvelinus alpinus , are found in Loch Rannoch, Scotland. The differences in morphology are adaptations to different modes of life, one being pelagic, the other benthic. Both forms have been the subjects of extensive genetic studies including cytogenetics, nuclear and mitochondrial DNA analysis, and protein electrophoresis. Significant differences between the two forms are revealed by some techniques but not others and provide evidence for the reproductive isolation of these two morphs. The findings are discussed in relation to the derivation of sympatry and the phylogenetics of Arctic charr. |
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| Keywords: | Salvelinus alpinus Loch Rannoch DNA content cytogenetics malate dehydrogenase mitochondrial DNA |
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