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Ecotoxicological information

Toxicity to other aquatic organisms

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Administrative data

Endpoint:
toxicity to other aquatic vertebrates
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, well-documented publication/study report which meets basic scientific principles

Data source

Reference
Reference Type:
publication
Title:
Effects and fate of sediment-sorbed linear alkylbenzene sulphonate (LAS) on the bivalve mollusk Mytilus galloprovincialis Lmk.
Author:
Marin, M.G., Pivotti, L., Campesan, G., Turchetto, M. and Tallandini, L.
Year:
1994
Bibliographic source:
Wat. Res. 28:85-90.

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Collected and placed in net tubes in a tank for 7 days in contact with 50 mg/L continuously suspended LAS-spiked sediments. Mussels were fed an algal suspension and water, food, and sediment were renewed daily.
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Commercial LAS; likely average alkyl chain length = C11.6

Sampling and analysis

Analytical monitoring:
yes

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
other: Mytilus galloprovincialis
Details on test organisms:
Thirty mussels (5.8 cm average main axis length) collected from a mussel cultivation area of the Lagoon of Venice, Italy

Study design

Test type:
semi-static
Water media type:
not specified
Limit test:
no
Total exposure duration:
7 d

Test conditions

Nominal and measured concentrations:
50 mg/L continuously suspended LAS-spiked sediments
Details on test conditions:
Mussels were divided into groups of 10 and placed in net tubes in a 60-L tank for 7 days in contact with 50 mg/L continuously suspended LAS-spiked sediments. Mussels were fed an algal suspension and water, food, and sediment were renewed daily.
Reference substance (positive control):
not specified

Results and discussion

Effect concentrations
Dose descriptor:
NOEC
Effect conc.:
32.19 other: mg/kg dry weight (geometric mean of initial [132 mg/L] and final [7.85 mg/L] LAS concentration)
Basis for effect:
other: filtration rate, oxygen uptake, nitrogen excretion
Details on results:
No significant differences in survival or physiological responses between treatments and controls were observed.

Any other information on results incl. tables

The LAS concentration in treated sediments decreased by about 90% over the duration of the study (mean 132 mg/kg at initiation to mean 7.85 mg/kg at completion).

Applicant's summary and conclusion