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EFFECT OF ZINC EXPOSURE ON SUBSEQUENT ACUTE TOLERANCE TO HEAVY METALS IN RAINBOW TROUT
Citation:
anadu, D., G. Chapman, L. Curtis, AND R. Tubb. EFFECT OF ZINC EXPOSURE ON SUBSEQUENT ACUTE TOLERANCE TO HEAVY METALS IN RAINBOW TROUT. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-89/177 (NTIS PB90140732), 1989.
Description:
Fish usually show increased tolerance to metals in solution if proviously given an opportunity to acclimate to near lethal concentrations of the metal (Dixon and Sprngue 1981a; McCarter and Roch 1983; Bradley et al. 1985; Chapman 1985), and tolerence has been correlated with an increase in tissue metallothionein (MT) (Dixon and Sprague 1981b; McCarter et al. 1982). The purposes of the tests described in this paper were: (1) to investigate the potential for increased tolerance to zinc; (2) to evaluate correlations between tolerance and liver MT level; (3) to go beyond simple one-step acclimation by increasing the acclimation level as tolerance developed; (4) to measure loss of tolerance following transfer of acclimated fish to control water; and (5) to determine if zinc acclimation led to increased tolerance to copper and cadmium.
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EFFECT OF ZINC EXPOSURE ON SUBSEQUENT ACUTE TOLERANCE TO HEAVY METALS IN RAINBOW TROUT