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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Reference
Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: study conducted acc. to national standard method without detailed documentation (e.g. test conditions, use of vehicle) (also assessed by OECD)
Qualifier:
according to
Guideline:
other: see below
Principles of method if other than guideline:
US-EPA 660/3-75-009: Methods for acute toxicity tests with fish, macroinvertebrates and amphibians (1975)
GLP compliance:
no
Analytical monitoring:
not specified
Test organisms (species):
Americamysis bahia (previous name: Mysidopsis bahia)
Details on test organisms:
Mysid shrimp
Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
96 h
Post exposure observation period:
Not applicable
Hardness:
No data given
Test temperature:
No data given
pH:
No data given
Dissolved oxygen:
No data given
Salinity:
Not applicable
Nominal and measured concentrations:
No information given
Details on test conditions:
Carried out according to US-EPA 660/3-75-009: Methods for acute toxicity tests with fish, macroinvertebrates and amphibians (1975)
Reference substance (positive control):
no
Duration:
96 h
Dose descriptor:
LC50
Effect conc.:
>= 0.18 - <= 0.32 mg/L
Conc. based on:
test mat.
Details on results:
The LC50 was between 0.18 and 0.32 mg/L
The 96 hour LC50 was between 0.18 and 0.32 mg/L
Conclusions:
The LC50 for mysid shrimp has been determined as being between 0.18 and 0.32 mg/L
Executive summary:

The test has been conducted according to "US-EPA 660/3-75-009: Methods for acute toxicity tests with fish, macroinvertebrates and amphibians (1975)".

The LC50 for mysid shrimp has been determined as being between 0.18 and 0.32 mg/L

Description of key information

The LC50 for mysid shrimp has been determined as being between 0.18 and 0.32 mg/L after 96 h

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
0.18 mg/L

Additional information

Regarding short-term toxicity to aquatic invertebrates several species have been tested. All tests resulting in EC50 or LC50 between 0.18 mg/L (Mysid shrimp, Mayer et al., 1981) and 2.41 mg/L (Daphnia magna, MITI, 2000) after 96 h and 48 h respectively.

Also a 72 h study has been performed on golden apple snail resulting in LC50 = 38.2 mg/L.