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Nephrocalcinosis in rainbow trout Salmo gairdneri Richardson; the effect of exposure to elevated CO 2 concentrations
Author(s) -
SMART G. R.,
KNOX D.,
HARRISON J. G.,
RALPH J. A.,
RICHARD R. H.,
COWEY C. B.
Publication year - 1979
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1111/j.1365-2761.1979.tb00170.x
Subject(s) - rainbow trout , salmo , nephrocalcinosis , calcification , biology , zoology , medicine , fishery , kidney , fish <actinopterygii> , endocrinology
. Rainbow trout exposed to environmental free C0 2 concentrations ranging from 12–60 mg/1 for a minimum of 275 days developed nephrocalcinosis. Gross, histopathological and chemical examinations demonstrated that prevalence and severity of nephrocalcinosis increased with increasing CO 2 concentrations. The condition was characterized by calcification and granuloma formation in kidney and stomach. Diet, but not water, PO 4 ‐P concentration appeared to modify the prevalence and severity at each CO 2 concentration tested.