Prevention of Ichthyophthirius multifiliis Infestation in Channel Catfish Fingerlings by Copper Sulfate Treatment

Abstract

The ability of copper sulfate to control Ichthyophthirius multifiliis tomites was determined in pond water and in settled, decanted pond water at 23°C for 7 d. Results indicate that copper concentrations of 0.15 and 0.02 mg/L prevented tomites from infesting channel catfish Ictalurus punctatus in pond water (total alkalinity = 366 mg CaCO₃ /L) and in settled, decanted pond water (total alkalinity = 224 mg CaCO₃ /L), respectively.