期刊
JOURNAL OF FISH BIOLOGY
卷 74, 期 3, 页码 553-561出版社
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1095-8649.2008.02144.x
关键词
Diplostomum spp; liver; Salvelinus alpinus; spleen; standard metabolic rate
资金
- Finnish Game and Fisheries Research Institute
- Nordic Workgroup for Fisheries
- Graduate School in Biological Interactions
The present study on the connection between standard metabolic rate (R(S)) and chronic Diplostomum spp. infection resulted in a decrease in R(S), and an enlargement in spleen and liver sizes in the infected juvenile Arctic charr Salvelinus alpinus compared to control fish. As splenic enlargement observed in infected fish was not due to condition-related changes in the spleen, it could most probably be explained by increased leucocyte synthesis. The higher liver masses in infected S. alpinus may have been related to disorders in energetic function, which could have had major effects on biochemical regulation by the liver. The proposed metabolic syndrome with a possible reduction in insulin sensitivity in tissues results in ineffective glucose and lipid metabolism and thus it is suggested that chronic Diplostomum infection in S. alpinus might not impose direct energetic costs, but it may weaken the efficiency of energy metabolism and thus lead to lowered R(S).
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