A Whole Species Approach to Methyl Mercury Toxicity
Methyl mercury's toxicity has been widely studied for its effects on both terrestrial and aquatic systems. Efforts have focused on the effects of methyl mercury on specific biological systems and processes, based on single species assays; and its biomagnification through the trophic web, using multi-species assays. These approaches are functional in establishing the toxicity of methyl mercury within set parameters, but do not allow an accurate assessment of its total impact on a single species. The characteristics of methyl mercury toxicity require that it be approached with a broader scope, one that incorporates both the specific mechanisms of toxicity and the ecology of the species being studied. The purpose of this paper is not to critique the methods of the current literature, but to propose a different focus. A focus that applies the results of single species assays and trophic web studies to developing methods that better quantify the effect of methyl mercury on the! entire lifecycle of a single species. The characteristics of methyl mercury toxicity that warrant this alternative focus stem from its disposition for bioaccumulation and biomagnification in the trophic web, and permanant neurological damage. Methyl m
These characteristics allow a species to elevate its dose of methyl mercury throughout its lifecycle, and classic dose-response studies only present us with a piece of the whole picture. Eggs of the brook trout, Salvelinus fontinalis, when ex!posed to a methyl mercury concentration of 2. The effects of Harmful Substances on the Low Water Bottom Fauna in the Vicinity of a Closed Down Chemical Plant. Methyl mercury's effect on endurance has been seen in the rainbow trout, Oncherhynus mykiss. This alternative approach allows for a more accurate determination of methyl mercury's total impact on a species and can lead to the reassessment of established safe exposure limits. When the adults return to reproduce, we can then establish tissue concentrations of the females. "Embryonic Action of Methyl Mercury in Coho Salmon Embryos. " Environmental Contamination and Toxicology 49 (1992): 449-454.
Common topics in this essay:
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Developing Methods,
Applying Ecology,
Devlin Muttet,
Becker Bigham,
Becker Bingham,
Baatrup Doeving,
methyl mercury,
Killfish Crenichthys,
Adults Methyl,
Zhou Weis,
methyl mercury's,
methyl mercury concentration,
trophic web,
mercury concentration,
potential exposure,
near shore,
bioaccumulation biomagnification,
single species,
effect methyl,
methyl mercury content,
et al,
effect methyl mercury,
near shore environment,
biomagnification trophic web,
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