Acute toxicity of alpha-cypermethrin on tilapia (Oreochromis niloticus L.) larvae.

Investigation of Acute Toxicity of Alpha-Cypermethrin on Adult Nile Tilapia (Oreochromis niloticus L.)

Alpha-cypermethrin, which is a synthetic pyrethroid pesticide and potential toxic pollutant, contaminating aquatic ecosystems was investigated in the present study for acute toxicity. Nile tilapia (Oreochromis niloticus) adults were selected for the bioassay experiments. The experiments were repeated three times and the 96-h LC50 value was determined for the adults. The static test method of ac...

TOXICITY OF COPPER SULPHATE AND BEHAVIORAL LOCOMOTOR RESPONSE OF TILAPIA (Oreochromis Niloticus) AND CATFISH (Clarias Gariepinus) SPECIES

Acute toxicity of copper sulphate (CuSO4.5H2O) to tilapia (Oreochromis niloticus) and catfish (Clarias gariepinus) species was investigated using toxicity index of 96 hours LC50 and the quantal response determined by the statistical probit analysis method. In response to the lethality of the copper toxicant, behavioral anomalies (locomotor response) of the exposed fish species were studied as i...

The effect of feed ingredients on the settling velocity of feces in Tilapia (Oreochromis niloticus L.)

Effect of Chlorpyrifos on the Hematology and Phagocytic Activity of Nile Tilapia Cells (Oreochromis niloticus).

Chlorpyrifos is an organophosphorous insecticide widely used in agriculture and domestic activities. However, little is known about the effect of this pesticide on the immune system of fish and other alterations of its physiological system. The aims of the present study were the evaluation of the LC(50) (lethal concentration(50)) and the potential toxicity of this substance on Nile tilapia (Ore...

Histopathological Effects of Roundup, a Glyphosate Herbicide, on Nile tilapia (Oreochromis niloticus)

The acute toxicity of Roundup, a glyphosate herbicide, to Nile tilapia, Oreochromis niloticus, was investigated with emphasis on histopathological effects. The values of 24-h, 48-h, 72-h and 96-h LC50 for young tilapia were 17.5, 17.1, 16.9 and 16.8 ppm, respectively, and those for adult tilapia were 46.9, 44.4, 40.0 and 36.8 ppm, respectively. They indicated that adult fish were more tolerant ...