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Eggs of Atlantic Salmon ( Salmo salar L) and Trout ( S. trutta L); Identification by Phosphoglucoisomerase Zymograms *
Author(s) -
Mork J.,
Heggberget T. G.
Publication year - 1984
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.1984.tb00409.x
Subject(s) - salmo , biology , salvelinus , brown trout , trout , fishery , arctic char , zoology , fish <actinopterygii>
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 ( Salmo salar L.) and trout ( S. trutta L.) 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 from 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. The PGI zymograms are probably diagnostic keys to species for eggs from Norwegian stream‐dwelling salmonids, including Arctic char ( Salvelinus alpinus L.). Some managemental implications of the present results are briefly discussed.