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VARIATIONS OF BIOLOGICAL INDICATORS AND PROTEIN AND AMINO ACID CONTENT IN ANGUILLA JAPONICA DURING GONAD DEVELOPMENT AND STARVATION STRESS
Author(s): 
Pages: 1373-1379
Year: Issue:  6
Journal: Oceanologia et Limnologia Sinica

Keyword:  Anguilla japonicagonad developmentstarvation stressbiological indicescrude proteinamino acid;
Abstract: We investigated the changes of major biological indices(the condition factor, hepatosomatic index, viscerosomatic index, and gonadosomatic index), meat content ratio, and the contents of crude protein and amino acid in muscle, liver, and gonads among three groups of eel Anguilla japonica, i.e., artificially-induced maturation eels, long-term fasting eels(20 months), and wild broodstock eels. The results show that the hepatosomatic index, viscerosomatic index, and gonadosomatic index of induced maturation eels were significantly greater than that of wild broodstock eel(P<0.05), while the meat content, crude protein content, total amino acids, total essential amino acids and the total non-essential amino acids content in liver and ovary were significant smaller than those of wild broodstock eel(P<0.05). The condition factor, hepatosomatic index, meat content, crude protein, total amino acids, total essential amino acids, and total non-essential amino acids in muscle and liver of long fasting eels(20 months) were significantly smaller than those of the wild broodstock eels(P<0.05). The results imply that the nutrients required by A. japonica during gonad development were supplied from muscle, and both essential amino acids and non-essential amino acids were utilized to meet the nutrients demand from gonadal development.
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