Местоположение издательства:New York, N.Y., United States
Первая страница:80
Последняя страница:83
Аннотация:Effect of Cu
2+
and Cr
6+
on samples and on model populations of rotifers
Brachionus plicatilis
Muller in chronic conditions at different salinity was investigated. The LC
50
(48 h) at salinities 10, 20, and 30‰
were 53.9, 0.25, and 0.1 mg Cr/l, respectively. The concentrations of 0.3 mg Cu/l and more led to the death of
100% of rotifers in 48 h in salinities 10 and 20‰, but at 30‰ the concentration 0.1 mg Cu/l was lethal. LC
50
(48 h) at salinities 10, 20, and 30‰ were 7.06, 0.07, and 0.01 mg Cu/l, respectively. The toxicity of Cr and Cu
for samples became higher with increasing salinity. For the model populations, the salinity influenced toxicity
only at high concentrations of Cr (20 mg/l). The effect of Cr was higher on samples than on model populations.