title: Acute and subchronic toxicity of metal complex azo acid dye and anionic surfactant oil on fish Oreochromis niloticus.
abstract: The acute toxicity study of metal complex dark green azo acid dye, anionic surfactant oil and their mixture determined the 96 hr LC50, and fish behaviours. Subchronic toxicity determined haematology parameters and concentrations of copper and chromium in blood. The 96 hr LC50 was determined by probit analysis and subchronic toxicity was conducted in 90 days. No mortalities were observed in control and anionic surfactant oil treatments. The 96 hr LC50 value of mixture was 26.7 mg I(-1) (95% CL = 20.7 - 46.8) and that of metal complex dark green azo acid dye was not met as the percentage of dead was below 50% of tested organisms. In a treatment of anionic surfactant oil and that of mixture observed behaviours were respiration response, uncoordinated movement, loss of equilibrium, erratic posture and loss of responsiveness. Subchronic toxicity indicated fluctuations in number of erythrocytes, leukocytes and thrombocytes in all chemical treatments. Erythrocyte morphology such as anisocytosis, erythrocytes hypertrophy, karyolysis, cytoplasm vacuolation, ghost cell were observed in fish blood in all chemical treatments. An inverse relation was observed between total copper and chromium concentration in blood. However, the toxicity effect was chemical dose dependent and length of exposure.
authors.forename: Hilma Rantilla
authors.initials: HR
authors.lastname: Amwele
authors.forename: Pittaya
authors.initials: P
authors.lastname: Papirom
authors.forename: Kanit
authors.initials: K
authors.lastname: Chukanhom
authors.forename: Fredrick Henry William
authors.initials: FH
authors.lastname: Beamish
authors.forename: Rakpong
authors.initials: R
authors.lastname: Petkam
mesh_terms: D000818:Animals; D001391:Azo Compounds / Q000737:chemistry / Q000633:toxicity*; D001792:Blood Platelets; D023681:Cichlids; D005393:Fish Diseases / Q000139:chemically induced*; D008670:Metals / Q000737:chemistry / Q000633:toxicity*; D013501:Surface-Active Agents / Q000737:chemistry / Q000633:toxicity*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000633:toxicity
chemical_list: D001391:Azo Compounds; D008670:Metals; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical