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EC number: 940-272-6 | CAS number: 2097734-13-7
Earthworm Mortality in [%] after 7 and 14 Days of Exposure
Test item concentration
[mg product/kg SDW]
MV = mean value
Earthworm Behaviour and Pathological Symptoms after 7 and 14 Days of Exposure
Test item concentration [mg product/kg SDW]
A) no obvious pathological symptoms or behavioural changes
H) dead earthworm
In a short-term toxicity study with Eisenia fetida (earthworm), the NOEC was determined to be ≥ 1000 mg/kg soil dry weight. The NOEC concerning mortality, biomass and reproduction has been determined in a long-term test with Eisenia fetida to be 1000 mg/kg sdw.
A short-term limit toxicity test with Eisenia fetida has been conducted to test the acute toxicity of the test substance according to the OECD guideline No. 207 in compliance with GLP. No significant mortality (<10%) and no pathological symptoms or changes in earthworm behaviour were observed in the control and the limit test substance concentration after 14 days of exposure. Also in terms of body weight loss, no statistically significant effects were observed in the limit concentration after 14 days of exposure compared to the pooled control. Therefore, the NOEC was determined to be >=1000 mg/kg soil dry weight.
The effects of the test substance on mortality, biomass and the reproductive potential of earthworms has also been tested in compliance with GLP in a long-term (8 weeks) test according to guideline OECD 222. Eisenia fetida has been exposed to five different test concentrations up to 1000 mg/kg soil dry weight in artifical soil. After 28 days of exposure in soil, neither evident mortalities (<10%) nor significant pathological symptoms or changes in the behaviour of adult earthworms has been observed (NOEC >=1000 mg/kg sdw). There were no statistically significant differences in earthworm body weight and reproduction in the treatment rates 62.5 to 1000 mg/kg soil dry weight compared to the pooled control.
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