Oxidative stress in freshwater fish, Labeo rohita as a biomarker of malathion exposure.

This study examined the effect of lethal (4.5 μg/l) and sublethal (0.45 μg/l) malathion levels on oxidative stress responses of the freshwater edible fish, Labeo rohita.

Behavioral and morphological endpoints: as an early response to sublethal malathion intoxication in the freshwater fish, Labeo rohita.

A short-term definitive test by the static renewal bioassay method was conducted to determine the acute toxicity (LC(50)) of commercial-grade organophosphate insecticide, malathion (50% EC) on the freshwater fish, Labeo rohita. Carp fingerlings were exposed to different concentrations of malathion for 96 hours. The acute toxicity (LC(50)) of malathion was found to be 4.

Gas-liquid chromatography for fenvalerate residue analysis: in vivo alterations in the acetylcholinesterase activity and acetylcholine in different tissues of the fish, Labeo rohita (Hamilton).

The disruption of acetylcholinesterase activity (AChE) in the freshwater fish, Labeo rohita is demonstrated in the present study using acetylthiocholine iodide as substrate. L. rohita on exposure to lethal (6 microg/L) and sub-lethal (0.

Behavioral and respiratory dysfunction in the freshwater fish, Labeo rohita (Hamilton) under malathion intoxication.

A short term definitive test by static renewal bioassay method was conducted to determine the acute toxicity (LC50) of the commercial grade organophosphate insecticide malathion (50% EC) in the freshwater edible fish, Labeo rohita. Carp fingerlings were exposed for 96 h to different concentrations (6.0 to 10.