TOXICITY OF FOUR THERAPEUTIC COMPOUNDS TO FRY OF INDIAN MAJOR CARPS

Abstract

Toxicity of four therapeutic compounds, viz; sodium chloride
potassium permanganate, potassium dichromate and acriflavine to fry
of Catla catla, Labeo rohita and Cirrhinus mrigala was tested. Bioassays
were conducted in 5 and 10 litre glass jars in the laboratory
for periods of 24 and 48 hours at temperatures of 26° and 32°C. LC 50
values of the chemicals were in the range~ of 5500 to 7500 ppm, 37.5
to 48 ppm, 92.5 to 125 ppm and 47.5 to 80 ppm respectively. The
results obtained are of value in evolving cheap control methods
against some common fish diseases. Sodium chloride and acriflavine
can be widely used for chemotherapy and potassium dichromate is
preferable to potassium permal)ganate for prophylaxis