2014
DOI: 10.4314/jasem.v18i1.7
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Toxicological Evaluation of Ethanol Extract of Adenium obesum Stem Bark in African Catfish, <i>Clarias gariepinus</i>

Abstract: ABSTRACT:The toxicity of ethanol extract of Adenium obesum stem bark as a tool for aquaculture pond management prior to the stocking of desired fish species was evaluated in Clarias gariepinus over 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 static toxicity bioassay after performing a range finding test to determine the median lethal concentration (LC 50 ) of the extract. Exposed fish showed signs of c… Show more

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Cited by 2 publications
(5 citation statements)
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“…These two plants have been used for fishing in the ALNP and B. aegyptiaca is grown near the river sides of the area and largely used as an effective fishing method during the dry season. This is in agreement with the study of Neuwinger (2004) and Abalaka et al (2014) in which B. aegyptiaca was in the first listing order among the piscicide plants widely used in Africa. Therefore, the efficacy of this commonly used plant piscicide was evaluated and found to be more toxic than other plant piscicides evaluated on different fish species (Neuwinger, 2004;Absalom et al, 2013;Alhou et al, 2016).…”
Section: Toxicity Evaluation Of B Aegyptiacasupporting
confidence: 92%
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“…These two plants have been used for fishing in the ALNP and B. aegyptiaca is grown near the river sides of the area and largely used as an effective fishing method during the dry season. This is in agreement with the study of Neuwinger (2004) and Abalaka et al (2014) in which B. aegyptiaca was in the first listing order among the piscicide plants widely used in Africa. Therefore, the efficacy of this commonly used plant piscicide was evaluated and found to be more toxic than other plant piscicides evaluated on different fish species (Neuwinger, 2004;Absalom et al, 2013;Alhou et al, 2016).…”
Section: Toxicity Evaluation Of B Aegyptiacasupporting
confidence: 92%
“…All fishes subjected for higher concentration levels appeared in a more distressed condition at first, jumping over the surface and gasping air then they became inactive followed by loss of balance and finally sank to the bottom. The behavioral responses against acute concentration of B. aegyptiaca observed in the current studies are in tandem with earlier findings of Ufodike and Omoregie (1994), Absalom et al (2013), Abalaka et al (2014) and Alhou et al (2016). However, at lower concentrations (that is 15.0 and 17.5 mgL -1 ), such physical distress was recorded only for B. nurse within a short time of exposure and the other test fishes showed such behavioral actions after long exposure.…”
Section: Behavioral Response Of Fishes To Test Concentrationssupporting
confidence: 90%
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“…Maxium survival was observed in the ethanol extarct while lower survival was observed in the aqueous extract as shown in the ( fig 1). (Abalaka et al, 2014) studied the toxicity of ethanol extract of Adenium obesum stem bark in Clarias gariepinus over a 96-h exposure period. The fishes were exposed to different concentrations of 6.25 mgL -1 , 7.50 mgL -1 , 8.20 mgL -1 , 8.80 mgL -1 and 10.00 mgL -1 of the extracts.…”
Section: Toxicity Bioassay Of Extractsmentioning
confidence: 99%