Acute toxicity and behavioural effects of chlorpyrifosethyl pesticide to juveniles of Clarias gariepinus Teugels
Chlorpyrifos-ethyl with its mode of action was evaluated in laboratory studies to determine its 96-h acute toxicity, using juveniles of Clarias gariepinus. The fish was exposed in glass aquaria to 0.64~cmg/l, 0.80mg/l, 0.96mg/l, 1.12mg/1 and 1. 28mg/1. The test substance was found to have lethal effects on fish as they changed fish behaviour and caused death. The 96-hLC50 value for C. gariepinus was estimated as 0.92mgl-1. Observations of be bavioural and mophlogical responses were used as indicators of sublethal toxicity. The behavioural toxicology bioassay may be valuable in comparing and predicting the mode of action of new or unknown toxicants in this and other fish species.
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| Main Authors: | , |
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| Format: | conference_item biblioteca |
| Language: | English |
| Published: |
FISON
2008
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| Subjects: | Fisheries, Pollution, Clarias gariepinus, Nigeria, freshwater environment, Toxicity, Toxicants, Lethal effects, |
| Online Access: | http://hdl.handle.net/1834/37978 |
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