Toxicity of thiocyanate to fish, plankton, worm, and aquatic ecosystem

• Published in: Bulletin of environmental contamination and toxicology Vol. 64; no. 2; pp. 197 - 204
• Main Authors: Bhunia, F, Saha, N.C, Kaviraj, A
• Format: Journal Article
• Language: English
• Published: New York, NY Springer-Verlag 01.02.2000; Springer Nature B.V
• Subjects: Analysis of Variance; Animal, plant and microbial ecology; Animals; Applied ecology; Aquatic ecosystems; aquatic environment; Biological and medical sciences; Ecosystem; Ecotoxicology, biological effects of pollution; Female; Fishes; Fresh water environment; Fundamental and applied biological sciences. Psychology; herbicides; Lethal Dose 50; Male; Oligochaeta - drug effects; Plankton; Plankton - drug effects; Temperature; thiocyanate; Thiocyanates - toxicity; thiocyanic acid; Toxicity Tests; Water Pollutants, Chemical - toxicity; Primary productivity; Toxicity; Carbon dioxide; Cladocera; Temperature effect; Oligochaeta; Crustacea; Aquatic environment; Pisces; Thiocyanates; pH; Phytoplankton; Branchiopoda; Branchiura; Oreochromis mossambicus; Annelida; Vertebrata; Inorganic anion; Medium effect; Arthropoda; Alkalinity; Invertebrata; Dissolved oxygen; Zooplankton; Water hardness
• ISSN: 0007-4861; 1432-0800
• DOI: 10.1007/s001289910030

Bioassays were conducted to examine the toxicity of thiocyanate to fish, plankton, and worms under different climatic conditions. Tilapia Oreochromis mossambicus, the crustacean Moina micrura, and the oligochaete worm Branchiura sowerbyi were used. The temperature conditions were 20, 25, ad 28 degree C. Results showed that fish were most susceptible and worms were least susceptible to thiocyanate, but all three species were more susceptible at higher water temperatures. At higher thiocyanate doses, fish exhibited convulsions, gasping, and flaring of the operculae. Dissolved oxygen, primary productivity, and plankton populations were reduced severely at thiocyanate concentrations ranging 0.77 1.02 mg/l.