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Full-Text Articles in Aquaculture and Fisheries
The Dynamics Of Chronically Bioaccumulated Cd In Rainbow Trout (Oncorhynchus Mykiss) During Both Moderately Hard And Soft Waterborne Exposures, Jessica Milne
Theses and Dissertations (Comprehensive)
Aquatic organisms respond to metal exposures by modulating uptake, elimination and detoxification capacity and, therefore, it is difficult to link accumulation within fish to adverse chronic effects. When fish are exposed to sublethal concentrations of metal, physiological responses follow a damage-repair scenario with rapid uptake into the gills followed by transfer via the circulatory system and accumulation into key organs such as the liver and kidney. Anthropogenic sources of cadmium (Cd) arise mainly from mining, smelting, and refining sulphide ores of Zn, Pb and Cu (Norton et al., 1990). The free divalent ion (Cd2+) is the toxic form …
Physiological And Toxicological Effects Of Pb Plus Cd Mixtures On Rainbow Trout (Oncorhynchus Mykiss) In Soft Acidic Water, Yvonne Kara
Theses and Dissertations (Comprehensive)
The ability of a metal to cause toxicity in aquatic environments is highly dependant upon the water chemistry, which can influence metal bioavailability. Metal bioavailability is affected by the concentration of the metal, complexation of the metal by organic and inorganic ligands, and by the speciation of the metal. Predictive models of metal toxicity, such as the biotic ligand model (BLM) have mainly focused upon predicting the toxicity of individual metals rather than the toxicity of metals in mixtures, which are more commonly found in contaminated waters. Two metals that are commonly found together are Pb and Cd which can …