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The genetics of sympatric Arctic charr [ Salvelinus alpinus (L.)] populations from Loch Rannoch, Scotland
Author(s) -
Hartley S. E.,
McGowan C.,
Greek R. B.,
Walker A. F.
Publication year - 1992
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1992.tb02729.x
Subject(s) - salvelinus , biology , sympatric speciation , sympatry , zoology , arctic , pelagic zone , reproductive isolation , mitochondrial dna , ecology , salmonidae , evolutionary biology , fishery , trout , fish <actinopterygii> , genetics , salmo , gene , demography , population , sociology
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.