Abstract
Atlantic salmon,Salmo salar L., from four European locations show allelic variation at one of three triose-phosphate isomerase (TPI) loci (TPI-3*) when separated on horizontal starch gel electrophoresis, using either eye or liver extracts. Two common alleles (*100 and*103) and one rare allele (*97) segregate atTPI-3* with unambiguous typing being possible by observing the interlocus heterodimers. Family studies demonstrate thatTPI-3* 100 and*103 are of autosomal location and are inherited in a Mendelian fashion.TPI-3* variation can also be typed in adipose fin tissue, allowing nondestructive tissue sampling. Three loci are also active in brown trout,Salmo trutta, with two individuals being homozygous forTPI-3*, as are a small number ofS. salar from eastern Canada. The presence of this additional variable allozyme locus inS. salar is important, since genetic studies in that species have been limited by the low level of allozyme variability detectable.
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Wilson, I.F., Bourke, E.A. & Cross, T.F. A triose-phosphate isomerase polymorphism in the Atlantic salmonSalmo salar L.. Biochem Genet 33, 25–33 (1995). https://doi.org/10.1007/BF00554555
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DOI: https://doi.org/10.1007/BF00554555