Growth and reproduction of the earthworm Eisenia fetida exposed to sublethal concentrations of organic chemicals

The determination of a short-term LC 50 toxicity value for a chemical is a useful indicator of the potential biological effect of the chemical if released into the environment. However, it is possible that adverse effects of the chemical may occur at sublethal concentrations far below LC 50 values....

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Veröffentlicht in:Soil biology & biochemistry 1990, Vol.22 (2), p.175-179
Hauptverfasser: Neuhauser, Edward F., Callahan, Clarence A.
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Callahan, Clarence A.
description The determination of a short-term LC 50 toxicity value for a chemical is a useful indicator of the potential biological effect of the chemical if released into the environment. However, it is possible that adverse effects of the chemical may occur at sublethal concentrations far below LC 50 values. Using the earthworm Eisenia fetida (Savigny) as an indicator organism for soil ecosystems, concentrations of 10 organic chemicals were evaluated for sublethal effects on earthworm growth and reproduction. Following short-term exposure to sublethal concentrations of carbaryl and dicldrin, E. fetida was allowed to resume growth and reproduction to determine whether such effects were permanent. The effect on earthworm populations as a representative soil organism could be a sentinel for the effects of more destructive soil processes.
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source Elsevier ScienceDirect Journals
subjects Agronomy. Soil science and plant productions
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Applied sciences
Autoecology
Biochemistry and biology
Biological and medical sciences
Biological and physicochemical properties of pollutants. Interaction in the soil
carbaryl
Chemical, physicochemical, biochemical and biological properties
dieldrin
Eisenia fetida
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
growth
Oligochaeta
organic compounds
Physics, chemistry, biochemistry and biology of agricultural and forest soils
pollutants
Pollution
Protozoa. Invertebrata
reproduction
Soil and sediments pollution
Soil and water pollution
soil pollution
Soil science
title Growth and reproduction of the earthworm Eisenia fetida exposed to sublethal concentrations of organic chemicals
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