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Eggs of Atlantic salmon (Salmo salar L.) and trout (S. trutta L.); identification by phosphoglucoisomerase zymograms
Mork, J.; Heggberget, T.G. (1984). Eggs of Atlantic salmon (Salmo salar L.) and trout (S. trutta L.); identification by phosphoglucoisomerase zymograms. Fish. Manage. Ecol. 15(2): 59-65
In: Fisheries Management and Ecology. Blackwel Science Ltd.: Oxford. ISSN 0969-997X; e-ISSN 1365-2400
Peer reviewed article  

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Trefwoorden
    Cells > Sexual cells > Eggs > Fish eggs
    Enzymes > Isoenzymes
    Stock identification
    Salmo salar Linnaeus, 1758 [WoRMS]; Salmo trutta Linnaeus, 1758 [WoRMS]
    Marien

Auteurs  Top 
  • Mork, J.
  • Heggberget, T.G.

Abstract
    Salmonid eggs were collected from spawning redds in the Norwegian rivers Alta, Gaula, and Driva in 1982. Their phosphoglucoisomerase (PGI; E.C. No. 5.3.1.9) patterns, as revealed by isoelectric focusing and histochemical staining, were compared to standard zymograms produced by Atlantic salmon (S. salar) and trout (S. trutta) white skeletal muscle extracts, and to the zymogram in salmon eggs of known origin. In salmon, the egg zymogram was identical with that of muscle. Two types of zymograms, identical with either salmon or trout muscle zymograms and thus regarded as species-determinants, were observed among the eggs form wild fish. Their proportions in the three rivers were as expected from current knowledge of species composition. The present findings are related to previous reports on PGI expression in salmonids. Some managemental implications of the present results are briefly discussed.

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