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Hydrobiological Journal
SJR: 0.217 SNIP: 0.575 CiteScore™: 0.24

ISSN Druckformat: 0018-8166
ISSN Online: 1943-5991

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Hydrobiological Journal

DOI: 10.1615/HydrobJ.v37.i6.20
7 pages

Assessment of Cuproxyl Toxicity by the Method of Bioassay Using Cladocera

I. M. Konovets
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev
E. P. Shcherban'
National University of Bioresources and Nature Management, Kyiv, Ukraine

ABSTRAKT

The toxicity of cuproxyl containing 10% CuSO4Ч5H2O, 10% aerosyl sorbent, and 80% water was studied by the method of bioassay using Daphnia magna Straus and Ceriodaphnia affinis Lilljeborg. The median lethal concentrations determined based on the results of acute experiments were 7.67 mg/L for Daphnia magna and 6.25 mg/L for Ceriodaphnia affinis. The toxicity threshold decreased with increasing the duration of exposure. The chronic lethal concentration of cuproxyl for Ceriodaphnia affinis (5 mg/L) caused the inhibition of reproduction of the test population in the third (III) and fourth (IV) generations. Under the action of sublethal concentrations of curpoxyl of 0.5 mg/L, 1.0 mg/L, and 2.5 mg/L the fecundity of Ceriodaphnia affinis decreased by 76.8%, 64.7%, and 58.0%, respectively.


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