Protein loci in the Arctic charr, Salvelinus alpinus L.: electrophoretic expression and genetic variability patterns

Protein loci in the Arctic charr, Salvelinus alpinus L.: electrophoretic expression and genetic... In the search for electrophoretically detectable protein loci in the Arctic charr, Salvelinus alpinus L., tissue samples of eye, liver, and muscle from a total of 934 specimens collected at 10 Swedish localities were analysed. General protein staining and specific staining for 33 enzymes revealed 52 detectable loci; 37 of which were considered usable in population surveys. Variability was observed at four loci coding for esterase (est‐2), the liver‐specific form of lactate dehydrogenase (ldh‐3), and the skeletal muscle form of malate dehydrogenase (mdh‐4, 5); genetic variation at loci coding for ldh‐3 and mdh‐4, 5 has not previously been described in the Arctic charr. Relating our results to the multiple locus studies presented in the literature including Arctic charr from Ireland and North America reveals polymorphism at approximately one‐third of the loci studied in the Arctic charr, and the fraction of variable loci does not appear lower in this species than in other salmonids. There were highly significant allele frequency differences between samples. Nevertheless, there was a high degree of genetic similarity among all the populations sampled indicating that they were derived from a relatively recent common ancestor. The results are discussed in relation to the current controversy concerning the number of major evolutionary lines in Scandinavian Arctic charr. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Fish Biology Wiley

Protein loci in the Arctic charr, Salvelinus alpinus L.: electrophoretic expression and genetic variability patterns

Journal of Fish Biology, Volume 23 (1) – Jul 1, 1983

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Publisher
Wiley
Copyright
Copyright © 1983 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0022-1112
eISSN
1095-8649
D.O.I.
10.1111/j.1095-8649.1983.tb02883.x
Publisher site
See Article on Publisher Site

Abstract

In the search for electrophoretically detectable protein loci in the Arctic charr, Salvelinus alpinus L., tissue samples of eye, liver, and muscle from a total of 934 specimens collected at 10 Swedish localities were analysed. General protein staining and specific staining for 33 enzymes revealed 52 detectable loci; 37 of which were considered usable in population surveys. Variability was observed at four loci coding for esterase (est‐2), the liver‐specific form of lactate dehydrogenase (ldh‐3), and the skeletal muscle form of malate dehydrogenase (mdh‐4, 5); genetic variation at loci coding for ldh‐3 and mdh‐4, 5 has not previously been described in the Arctic charr. Relating our results to the multiple locus studies presented in the literature including Arctic charr from Ireland and North America reveals polymorphism at approximately one‐third of the loci studied in the Arctic charr, and the fraction of variable loci does not appear lower in this species than in other salmonids. There were highly significant allele frequency differences between samples. Nevertheless, there was a high degree of genetic similarity among all the populations sampled indicating that they were derived from a relatively recent common ancestor. The results are discussed in relation to the current controversy concerning the number of major evolutionary lines in Scandinavian Arctic charr.

Journal

Journal of Fish BiologyWiley

Published: Jul 1, 1983

References

  • Allozyme evidence for reproductively isolated sympatric populations of brown trout Salmo trutta L. in Lough Melvin, Ireland
    Ferguson, Ferguson; Mason, Mason
  • Joint segregation of biochemical loci in Salmonidae. II. Linkage associations from a hybridized Salvelinus genome (S. namaycush S. fontinalis
    May, May; Stoneking, Stoneking; Wright, Wright
  • Reproductive isolation with little genetic divergence in sympatric populations of brown trout (Salmo trutta
    Ryman, Ryman; Allendorf, Allendorf; Ståhl, Ståhl

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