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Cadmium Induced Adverse Effects on Fry of Oreochromis mossambicus

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dc.contributor.author Ranatunge, R. A. A. R.
dc.contributor.author Wijesinghe, M. R.
dc.contributor.author Ratnasooriya, W. D.
dc.date.accessioned 2022-03-28T04:43:09Z
dc.date.available 2022-03-28T04:43:09Z
dc.date.issued 2011
dc.identifier.citation Ranatunge, R. A. A. R., Wijesinghe, M. R., Ratnasooriya, W. D.(2011).Cadmium Induced Adverse Effects on Fry of Oreochromis mossambicus, Journal of Tropical Forestry and Environment Vol. 01, No. 01 (2011) 27-35 en_US
dc.identifier.uri http://dr.lib.sjp.ac.lk/handle/123456789/10878
dc.description.abstract This study investigates the effects of Cadmium (Cd) on fry of the Mozambique Tilapia Oreochromis mossambicus using standard toxicity tests. Fry were repeatedly exposed to five concentrations (0.002 – 2.0 mgl-1) of Cd and survival, growth and swimming activity were monitored over 10 days. These trials revealed that all the tested concentrations significantly enhanced mortality of the fry with concentrations above 1.0 mgl-1 resulting in 100% mortality. Mortality was positively related to the exposure level indicating dose-dependency. The LC50 1-10days ranged from 0.02 to7.26 mgl-1. Fry exposed to Cd also exhibited an increase in swimming activity in comparison to those that were not exposed indicating abnormal behaviour. Nevertheless, there was no apparent growth retardation and gross morphological defects during the brief exposure period. These findings are significant because the lethal and sublethal effects in fry were also apparent at Cd concentrations of 0.001 – 0.2 mgl-1, which are typically recorded in fresh waterbodies in Sri Lanka. en_US
dc.language.iso en en_US
dc.publisher Department of Forestry and Environmental Science University of Sri Jayewardenepura en_US
dc.subject Cadmium, Oreochromis mossambicus, survival, toxicity, Sri Lanka en_US
dc.title Cadmium Induced Adverse Effects on Fry of Oreochromis mossambicus en_US
dc.type Article en_US
dc.identifier.doi https://doi.org/10.31357/jtfe.v1i1.81 en_US


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