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Enzyme activities in the blood plasma of grayling, Thymallus thymallus (Linn.), in the breeding season
Author(s) -
Hlavová V.
Publication year - 1989
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1989.tb03357.x
Subject(s) - biology , grayling , alanine aminotransferase , creatine kinase , lactate dehydrogenase , glutamate dehydrogenase , enzyme assay , salmonidae , zoology , enzyme , fishery , ecology , endocrinology , fish <actinopterygii> , biochemistry , salmo , glutamate receptor , receptor
Activities of alanine aminotransferase, aspartate aminotransferase, glutamate dehydrogenase and creatine kinase were determined in the blood plasma of grayling, Thymallus thymallus , in the pre‐spawning, spawning and post‐spawning periods. Enzyme activities increased to a maximum in the spawning period and then successively decreased, after spawning, to values close to the initial ones. Only in the case of aspartate aminotransferase did the increased activity level persist after spawning. The temporary but large increase in enzyme activity levels in the plasma of grayling appeared to be a natural and physiological phenomenon accompanying the spawning process.