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Susceptibility of steelhead trout Salmo gairdneri Richardson to redmouth infection Yersinia ruckeri following exposure to copper
Author(s) -
KNITTEL M. D.
Publication year - 1981
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.1365-2761.1981.tb01107.x
Subject(s) - yersinia ruckeri , salmo , copper , trout , biology , rainbow trout , fish <actinopterygii> , inoculation , fishery , microbiology and biotechnology , zoology , veterinary medicine , immunology , chemistry , medicine , organic chemistry
. Steelhead trout were exposed to sublethal concentrations of copper and inoculated with Yersinia ruckeri. Copper exposure at 7 and 10 μg/1 for 96 h caused more fish to die of infection than control fish (no copper). Infection susceptibility increased with time of exposure to a single dosage of copper (10 μg/1), reaching a maximum at 48 h. Lowering the copper concentration to 5 μg/1 caused the infection susceptibility to occur at 24 h. The infectious dose of Y. ruckeri was lower in fish exposed to 10 μg/1 copper for 48 h than control fish.