Uptake and metabolization of dissolved compounds in rainbow trout ( Salmo gairdneri R.) fry
Identifieur interne : 001F38 ( Main/Merge ); précédent : 001F37; suivant : 001F39Uptake and metabolization of dissolved compounds in rainbow trout ( Salmo gairdneri R.) fry
Auteurs : Benoit Fauconneau ; Sadasivam J. Kaushik ; Jean Marie BlancSource :
- Comparative Biochemistry and Physiology, Part A: Physiology [ 0300-9629 ] ; 1989.
Abstract
1.1. The uptake and metabolic utilization of glucose (GL), acetate (AC), leucine (LE) and glutamic acid (GA) was studied in trout fry (mean body weight: 2.6 g) by the measurement of radioactivity in soluble fraction of fish and in 14CO2 excreted by fish after immersion of fish in a 10mM solution of one of these labelled [U-14C] substrates.2.2. The rate of intake of glucose (GL) by the fish was higher than that of AC, LE and GA (respectively, 4.6, 2.4, 2.7 and 2.1 μmol/g/hr). The rate of oxidation of GL and GA was however lower than that of AC and LE (respectively, 0.021, 0.016, 0.033 and 0.030 μmol/g/hr).3.3. The excretion of ammonia and urea was stimulated by the immersion in 10mM solution of LE or GA.4.4. The oxidative metabolism of tetraploid trout did not differ from that of triploids and diploids. However, it seemed that in tetraploids oxidation of glucose was lower and oxidation of leucine respectively higher than that of other groups.
Url:
DOI: 10.1016/0300-9629(89)90509-4
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