Toxicological Responses of African Mud Catfish (Clarias gariepinus, Burchell, 1822) Fingerlings Exposed to Culture Water Contaminated with Different Concentrations of Cypermethrin

Abstract

The toxicological effects of cypermethrin on Clarias gariepinus fingerlings and its contamination of culture water was studied. Ten fingerlings were stocked in each aquarium and was exposed to 5 different concentrations of cypermethrin and there was a control group. The fingerlings were exposed to 5, 10, 15, 20 and 30 ppm of cypermethrin in triplicate. A total of 180 C. gariepinus fingerlings with a mean weight of 1.85 ± 0.29 g were used throughout the study. The toxicant altered the physico-chemical parameters of culture water. The water temperature, pH, electrical

Toxicological Impact of Leachates from Lemna Refuse Dump Site on African Catfish (Clarias gariepinus, Burchell 1882) Fingerlings Under Laboratory Condition

“…Toxicity assessment using bioassay can represent either acute or chronic exposure [24]. This study on the toxicity of Lemna leachate on C. gariepinus fingerlings was concentration dependent, and conformed to the findings of Andem et al [25], Joseph et al [26], and Otong et al [27]. C. gariepinus fingerlings exposed to different concentrations of leachate showed signs of stress, erratic behaviour, jerky movement, rapid opercular movement, leaping out of water, thick mucus, and gasping for air when exposed to different concentrations of leachates.…”