Publication Citation

USGS Series Investigations in Fish Control
Report Number 38
Title Toxicity of 33NCS (3'-chloro-3-nitrosalicylanilide) to freshwater fish and sea lampreys
Edition -
Language ENGLISH
Author(s) Marking, Leif L.; King, Everett L.; Walker, Charles R.; Howell, John H.
Year 1970
Originating office Great Lakes Science Center
USGS Library Call Number -
Physical description 16 p. ; 26 cm
ISBN

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Abstract

The chemical 33NCS (3'-chloro-3-nitrosalicylanilide) was evaluated as a fish control agent and as a larvicide for sea lampreys at the Fish Control Laboratories of the Bureau of Sport Fisheries and Wildlife and the Hammond Bay Biological Station of the Bureau of Commercial Fisheries. The chemical is rapidly toxic to many species. Sea lampreys, bowfin, and channel catfish are the most sensitive species. Carp are more sensitive than trouts or sunfishes. Use of 33NCS in selective control of freshwater fishes or sea lampreys requires precise control because its toxicity is strongly influenced by variations in water quality.