Acute toxicity of platinum to coho salmon (Oncorhynchus kisutch)
Document Type
Article
Date of Original Version
1-1-1979
Abstract
The effects of short-term exposure to tetravalent platinum on survival, opercular movement and post-treatment growth of coho salmon fry (Oncorhynchus kisutch) was investigated. Employing a static water acute toxicity bioassay with platinum as PtCl42HCl·6 H2O, at 8.5±0.2°C, and a water hardness of 55.9±3.5 mg l.-1 (as CaCo3), the 24, 48, and 96-h LC50 values were 15.5, 5.2, and 2.5 mg Pt4+ l.-1 respectively. Rates of opercular movement for fish exposed to platinum increased with increasing concentrations to a level of 1.0 mg l.-1. No further significant increases were evident above this level. Hypoactivity of fish exposed to 0.3 mg l.-1 and higher was evident during the acute toxicity bioassay and much of the post-treatment study. Post-treatment rate of growth for fish exposed to sublethal concentration of platinum for 96 h was less than that of the controls. All organs examined histopathologically were within normal ranges with the exception of the gills and olfactory organ. Lesions in fish exposed to concentration of 0.3 mg l.-1 and higher were characterized by branchial epithelial hypertrophy and hyperplasia, and necrosis of olfactory epithelial cells. © 1979.
Publication Title, e.g., Journal
Marine Pollution Bulletin
Volume
10
Issue
3
Citation/Publisher Attribution
Ferreira, Paul F., and Richard E. Wolke. "Acute toxicity of platinum to coho salmon (Oncorhynchus kisutch)." Marine Pollution Bulletin 10, 3 (1979). doi: 10.1016/0025-326X(79)90217-0.