Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

The following studies are available for fenitrothion:

- Long term toxicity to fish (early life-stage toxicity test)

- Short term toxicity to fish (bluegill and trout: based on the 96h LC50 and NOEC values rainbow trout is the more sensitive species)

- Long term toxicity to aquatic invertebrates

- Toxicity to aquatic algae

- Toxicity to microorganisms (ASRIT)

Additional information

Relevant studies and endpoints

Short term toxicity to fish, (EPA OPP 72-1)

Relevant studies

Endpoints

6.1.1, Supporting study (bluegill), Analytical Bio-Chemistry Laboratories, Inc. 1987

(HW-71-0330)

96 h LC50:                  2.5 mg/L

96 h NOEC:    0.69 mg/L

6.1.1, Key Study (trout), Analytical Bio-Chemistry Laboratories, Inc. 1987 (HW-0329)

96 h LC50:                  1.3 mg/L

96 h NOEC:    0.44 mg/L

Long term toxicity to fish (EPA OPP 72-4)

Relevant study

Endpoints

6.1.2. , Supporting study, Analytical Bio-Chemistry Laboratories, Inc. 1988 (HW-81 -0331)

 

NOEC:     0.088 mg/L

 

Short term toxicity to aquatic invertebrates (EPA OPP 72 -2)

 Relevant study

 Endpoints

6.1.3. , Key study, Analytical Bio-Chemistry Laboratories, Inc. 1982 (HW-71-0328)

48h EC50:       0.0086 mg/L 48h NOEC:     <0.002 mg/L

Long term toxicity to aquatic invertebrates (EPA OPP 72-4)

Relevant study

Endpoints

6.1.4. , Key Study,D.magna - Analytical Biochemistry Laboratories 1988 (HW-81-326)

21day EC50:   0.19µg/L 21day NOEC: 0.087 µg/L

Toxicity to aquatic algae (EPA OPP 122-2)

Relevant study

Endpoints

6.1.5. Key Study, Analytical Biochemistry Laboratories 1987 (HW-71-0327)

72 h EC50:  1.2 mg/L 72 h NOEC:    0.61 mg/L

 Toxicity to microorganisms (OECD (209)
 Relevant study  Endpoints
 6.1.7 ASRIT Key Study, CIT, 2002, (HW-0484)  3h EC50:                     >1000 mg/L