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Ecotoxicological information

Toxicity to other aquatic organisms

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Toxicity to other aquatic organisms

Toxicity to other aquatic organisms

High quality acute toxicity values are available for different species, with the lowest EC50being 0.146 mg Ni/L for Xenopus laevis(Hopfer et al., 1991) and the highest EC50being 3.740 mg Ni/L forBufo terrestris(Fort et al., 2006). The LC50values range from 0.420 mg Ni/L forAmbystoma opacum(Birge et al., 1978) to 21.42 mg Ni/L forAmbystoma opacum(Hopfer et al, 1991).

 

Amphibians:

NOEC/L(E) C10 data are available for different species of amphibians, with values ranging from 0.084 µg Ni/L to 13.15 mg Ni/L, both values fromXenopus laevis(Hopferet al., 1991).

The following table indicates those NOEC or EC10 values of high quality that have been carried forward for the HC5 & PNEC derivation:

 

  Key Study

(freshwater amphibians)

Selected values for the most sensitive endpoints used for derivation of the freshwater HC5

Species

Endpoint

Value (s) (ug/L)

Hopfer et al., 1991

Xenopus laevis

EC10

84.5

Fort et al., 2004

Xenopus laevis

EC10

230-260

Bufo terrestris

NOEC

640

Gastrophryne carolensis

LC10

180-190