Ichthyophthirius multifiliis INFECTION OF Botia macracantha LARVAE AND ACUTE TOXICITY TRIALS USING SODIUM CHLORIDE AND FORMALIN ON LARVAL FISH

摘要

Ichthyophthirius multifiliis ("ich"), a holotrichous ciliate, is a common and significant problem to aquarists and commercial fish producers through out the world2. As a parasite that appears to infect most freshwater fishes, ich has been widely studied5. There have been numerous studies focusing on the acquired protective immunity of fish surviving an ich challenge1. An ich infestation can cause massive mortalities if left untreated2. There are several available methods for treatment and control ofthis parasite, some of which are: formalin, a formalin malachite green mixture, elevated salt levels, increased water temperature (>30°C) for 10 days, copper sulfate, potassium permanganate, and UV filtration2,4.