US EPA

1482404 

Technical Report 

Lethality of aminocarb and the components of the aminocarb formulation to juvenile Atlantic salmon, marine invertebrates and a freshwater clam 

Mcleese, DW; Zitko, V; Metcalfe, CD; Sergeant, DB 

1980 

PESTAB/80/1993 

2 

2 

PESTAB. Aminocarb formulations containing 21.7% (by weight) aminocarb, 51.2% nonylphenol, and 27.1% of 585 oil (primarily low molecular weight alkanes and naphthalenes), were used in toxicity tests on freshwater and marine species. The 96 hr lethal thresholds of aminocarb were 8.7 mg/l for Salmo salar and 0.2 mg/l for Crangon septemspinosa. After 144 hr the lethal threshold was 5.0 mg/l for Anodonta cataractae. The lethal concentrations of nonylphenol to Homarus americanus and Mya arenaria and of the 585 oils to several invertebrate species were also determined. The toxicity of the aminocarb formulation to the salmon was due almost entirely to the presence of nonylphenol. For Crangon shrimp the nonylphenol was slightly more toxic than aminocarb. The order of sensitivity to the formulation was marine crustaceans salmon bivalves; the bivalves were the most resistant to the toxic effects of the formulation and its components. The 585 oils did not contribute significantly to the toxicity of the formulation. No adverse ecological effects have been noted to occur from using aminocarb formulations in actual spray operations.