Toxicological Evaluation of Ethanol Extract of Adenium obesum Stem Bark in African Catfish, Clarias gariepinus

Journal of Applied Sciences and Environmental Management

ABALAKA, SAMSON ENEOJO¹  IBRAHIM, NAJUME DOGUWAR GIGINYA¹  AMBALI, SULEIMAN FOLORUNSHO¹  FATIHU, MUHAMMAD YAKASAI¹ 

关键词: Adenium obesum;    Clarias gariepinus;    toxicity;    median lethal concentration;   

DOI  :  

学科分类：环境科学（综合）

来源: University of Port Harcourt * Department of Pure and Industrial Chemistry

【 摘 要 】

The toxicity of ethanol extract of Adenium obesumstem bark as a tool foraquaculture pond management prior to the stocking of desired fish species was evaluated in Clarias gariepinusover a 96-h exposure. The fish were exposed to 6.25 mgL-1, 7.50 mgL-1,8.20 mgL-1, 8.80 mgL-1 and 10.00 mgL-1 of the extract and a control in an acute statictoxicity bioassay after performing a range finding test to determine the median lethalconcentration (LC50) of the extract. Exposed fish showed signs of changed behaviours withadaptive responses, respiratory distress and nervous compromise, including mortality insome of the exposed fish. The appearance and intensities of the observed signs wereconcentration and exposure period-dependent. An LC50 value of 7.35 mgL-1 was establishedfor the extract in the exposed fish where mean mortality was significantly (p

【 授权许可】

Unknown