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Efficacy of Potassium Permanganate in Treating Ichthyophthiriasis in Channel Catfish
Author(s) -
Straus David L.,
Griffin Billy R.
Publication year - 2002
Publication title -
journal of aquatic animal health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 52
eISSN - 1548-8667
pISSN - 0899-7659
DOI - 10.1577/1548-8667(2002)014<0145:eoppit>2.0.co;2
Subject(s) - ichthyophthirius multifiliis , ictalurus , catfish , potassium permanganate , biology , infestation , juvenile , fishery , toxicology , veterinary medicine , zoology , fish <actinopterygii> , ecology , chemistry , botany , medicine , organic chemistry
Epizootics of ichthyophthiriasis can be controlled with potassium permanganate (KMnO 4 ), but its effectiveness has not been confirmed by controlled studies. The purpose of this study was to determine the concentration of KMnO 4 needed to halt an active Ichthyophthirius multifiliis infestation in channel catfish Ictalurus punctatus . Juvenile channel catfish were exposed to fish infested with I. multifiliis until they developed immature trophonts. They were then moved to individual static containers with 2 L of filtered well water, where they were treated with KMnO 4 daily for 10 d. The lowest effective dose of KMnO 4 required to eliminate theronts was 1.25 mg/L. The results indicate that KMnO 4 is effective for controlling I. multifiliis epizootics at low concentrations in clean water. However, effective treatment in ponds will be strongly influenced by detoxication of KMnO 4 depending on the concentration of easily oxidizable substances in the water.