Acute toxicity bioassays of mercuric chloride and malathion on air-breathing fish Channa punctatus (Bloch).
Acute toxicity tests (96 h) were conducted in flow-through systems to determine the lethal toxicity of a heavy metal compound, mercuric chloride, and an organophosphorus pesticide, malathion, to air-breathing teleost fish, Channa punctatus (Bloch) and to study their behavior. The 96-h LC50 values were determined, as well as safe levels. The results indicate that mercuric chloride is more toxic than malathion to the fish species under study. Dose- and dose-time-dependent increases in mortality rate were also observed in response to both test chemicals.
Pandey
Sanjay
S
National Bureau of Fish Genetics Resources, Canal Ring Road, Telibagh, P.O.-Dilkusha, Lucknow-226 002, India.
Kumar
Ravindra
R
Sharma
Shilpi
S
Nagpure
N S
NS
Srivastava
Satish K
SK
Verma
M S
MS
D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004305:Dose-Response Relationship, Drug; D006863:Hydrogen-Ion Concentration; D007306:Insecticides / Q000633:toxicity*; D007928:Lethal Dose 50; D008294:Malathion / Q000633:toxicity*; D008627:Mercuric Chloride / Q000633:toxicity*; D010100:Oxygen / Q000032:analysis; D010473:Perciformes / Q000502:physiology*; D013696:Temperature; D014867:Water / Q000737:chemistry
D007306:Insecticides; D014867:Water; D008627:Mercuric Chloride; D010100:Oxygen; D008294:Malathion