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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 19, No. 3, 2015, pp. 557-560
Bioline Code: ja15070
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 19, No. 3, 2015, pp. 557-560

 en Toxicological evaluation of methanol extract of Khaya senegalensis check for this species in other resources leaves in African catfish Clarias gariepinus check for this species in other resources
ABUI, O.A. & MATOUKE, M.M.

Abstract

The toxicity of methanol extract of Khaya senegalensis check for this species in other resources leaves was evaluated in Clarias gariepinus check for this species in other resources over 96 h exposure. The fish were exposed to 150 mg/L. 170 mg/L. 190mg/L, 210 mg/L and 230 mg/L of the extract and a control in acute static bioassay after a trial finding to determine the median lethal concentration (LC50) of the extract. Exposed fish showed clinical signs, such a distress opercula ventilation, tail fin beats and respiratory alteration. The frequency of opercula ventilation and tail fin beats were concentration dependent and showed significant association (P<0.05). The LC50 value of 199,69mg/L was established for the extract in the exposed fish where mean mortally was significantly (P<0.05) concentration and exposure dependent. This plant is to be regarded as a piscine toxicant and should be discarded from the bank of rivers and dams.

Keywords
Acute effect; Histopathology; Khaya senegalensis; Clarias gariepinus

 
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