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Ecotoxicological information

Long-term toxicity to fish

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Link to relevant study record(s)

Reference
Endpoint:
adult fish: sub(lethal) effects
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:
Justification for type of information:
Acute testing with CdTe on fish did not show toxicity at 1g CdTe/l, while some toxicity was observed in acute tests with algae and invertebrates. This observation, combined with the knowledge that invertebrates are the most sensitive taxonomic group for the Cd ion, as follows from the extensive database on chronic toxicity of soluble Cd compounds (invertebrates mean toxicity 3.04µg Cd/l (22 species NOECs, lowest value 0.21µg/l; fish mean toxicity 10.8µg Cd/l (18 species NOECs, lowest value 0.47µg/l; algae mean toxicity 9.13µg Cd/l (8 species NOECs, lowest value 0.85µg/l) justifies to waive the chronic fish test.

Description of key information

The long-term toxicity to fish was waived as acute testing with CdTe on fish did not show toxicity at 1g CdTe/L.

However, as Cd2+ ion determines ecotoxicity the PNEC deriviation will be based on the Cd2+ ion as determined in the RA (ECB 2007).

Key value for chemical safety assessment

Additional information

The long-term toxicity to fish was waived as acute testing with CdTe on fish did not show toxicity at 1g CdTe/l, while some toxicity was observed in acute tests with algae and invertebrates. This observation, combined with the knowledge that invertebrates are the most sensitive taxonomic group for the Cd ion, as follows from the extensive database on chronic toxicity of soluble Cd compounds (invertebrates mean toxicity 3.04µg Cd/l (22 species NOECs, lowest value 0.21µg/l; fish mean toxicity 10.8µg Cd/l (18 species NOECs, lowest value 0.47µg/l; algae mean toxicity 9.13µg Cd/l (8 species NOECs, lowest value 0.85µg/l) justifies to waive the chronic fish test.