The assessment of sublethal effects of pollutants in the sea. Review of the problems

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
M Waldichuk

Abstract

Sublethal effects of pollution may be significant to survival of a stock of marine fish or even a species. Such effects sometimes lead to reproductive failure and have been identified so far only in freshwater systems. Atlantic salmon have disappeared from many streams in Europe and eastern North America, partly as a result of pollution in their freshwater spawning areas and in their estuarine nursing grounds. Reductions in populations of marine fishes due to pollution solely have not yet been demonstrated. However, Baltic Sea seals, where reproductive failure is apparently associated with high concentrations of DDT and polychlorinated biphenyl in the blubber, may have suffered a decline owing to the presence of these organochlorines. Sublethal effects of pollutants have been studied in the laboratory, essentially under four categories: (1) physiology (growth, swimming performance, respiration, circulation); (2) biochemistry/cell structure (blood chemistry, enzyme activity, endocrinology, histochemistry); (3) behaviour/neurophysiology; and (4) reproduction. Not all pollutants elicit meaningful responses in all categories, and a response is not always linear with pollutant concentration. For application to survival of population...Continue Reading

References

Mar 1, 1985·Environmental Monitoring and Assessment·F S Sanders
Nov 1, 1981·Bulletin of Environmental Contamination and Toxicology·J D Popham, J M D'Auria
May 1, 1985·Bulletin of Environmental Contamination and Toxicology·D E Watenpaugh, T L Beitinger
Jan 1, 2001·Biomarkers : Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals·K A Tricklebank

Related Concepts

Study
Hydrocarbons, Chlorinated
Behavior, Animal
Salmo salar
Phocidae
Blubber
Reproduction
Environment
Laboratory
Acute Failure

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