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Ecotoxicological information

Toxicity to terrestrial arthropods

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Description of key information

No key information has been identified to cover this endpoint. However, since the outcome of the CSA using the current PNECsoil did not indicate the need to refine the terrestrial hazard assessment, further testing is not required.

Key value for chemical safety assessment

Additional information

A single study was identified as containing relevant and reliable information on toxicity to terrestrial arthropods. In the study of Li et al. (2006), beetle larvae (Holotrichia parallela) were exposed to soil spiked with ReCl3.6H2O (Ce, La, Pr) for about a year until adult eclosion. No effects on mortality, pupation and emergence were observed up to the highest dose tested, which was 3000 mg/kg soil (ReCl3.6H2O). The recalculated NOEC is therefore 1180 mg/kg soil (based on total RE elements Ce + La + Pr). This study is not sufficient to cover this endpoint because it only presents results from a mixed exposure experiment. However, the results can be considered as indicative concerning the severity of lanthanum toxicity in soil arthropods.

Since the outcome of the CSA using the current PNECsoil did not indicate the need to refine the terrestrial hazard assessment, further testing is not required.