Effects of temperature, salinity, and feeding on aminotransferase activity in the liver and white muscle of rainbow trout (Salmo gairdneri Richardson).
1. The liver-somatic index of rainbow trout is governed by temperature and salinity, and by the interaction of these two factors. 2. The overall liver-alanine aminotransferase activity (in units/100 g body weight) increases slightly with increasing salinity of the surroundings in the case of rainbow trout. 3. The overall liver-aspartate aminotransferase activity (in units/100 g body weight) in rainbow trout depends on their food and the temperature at which they are kept. 4. Salinity adaptation leads to reductions in the specific alanine and aspartate aminotransferase activity in the liver of rainbow trout. 5. The specific alanine aminotransferase activity in the muscle of starving rainbow trout kept in diluted seawater (580 mOsm/l, 18 degrees C) is clearly higher than in control animals kept in tapwater.
D000410:Alanine Transaminase / Q000032:analysis / Q000378:metabolism; D000818:Animals; D001219:Aspartate Aminotransferases / Q000032:analysis / Q000378:metabolism; D001835:Body Weight / Q000187:drug effects; D004435:Eating; D008099:Liver / Q000187:drug effects / Q000201:enzymology*; D009124:Muscle Proteins / Q000032:analysis; D009132:Muscles / Q000187:drug effects / Q000201:enzymology*; D009994:Osmolar Concentration; D012487:Salmonidae / Q000378:metabolism*; D012965:Sodium Chloride / Q000494:pharmacology*; D013696:Temperature; D000637:Transaminases / Q000378:metabolism*; D014337:Trout / Q000378:metabolism*
D009124:Muscle Proteins; D012965:Sodium Chloride; D000637:Transaminases; D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase