Division of'Ensironmenta1and Evolutionary Biology, School of Biology and Biochemistry, The Queen's University of Belfast, David Keir Building, Belfast BT9 5AG, U . K . (Received 24 July 1990, Accepted 6 August 1990) Key words: minisatellite DNA; single locus probe; Atlantic salmon; Salmo salar; salmonid Novel highly polymorphic genetic markers for Atlantic salmon, Salmo salar L., are described. Their potential applicability is discussed. Relatively few electrophoretically detectable polymorphic enzyme loci have been recorded for Atlantic salmon. Where present, usually only two or three alleles segregate at a locus and heterozygosity levels are low (e.g. Stihl, 1983). This scarcity ofdiagnostic genetic markers has greatly restricted genome mapping, linkage studies and detailed familial and population genetic investigations in this species. Clearly alternative sources of polymorphic genetic markers will be required to more fully explore these important research topics. Of potential interest, in this respect, has been the relatively recent discovery of hypervariable non-coding regions of nuclear DNA in humans and other animals (Jeffreys et al., 1985; 1987). Such ' minisatellite ' regions, composed of different numbers of tandem repeat units of a * core ' DNA sequence, are widely dispersed throughout the genome. Fields et al. (1 989) and Taggart &
Journal of Fish Biology – Wiley
Published: Dec 1, 1990
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