Investigating the Acute Toxic Effects of Urea Fertilizer on Juvenile Nile Tilapia (Oreochromis niloticus)
George, U. U., Essien-Ibok, M. A.
Asian Journal of Fisheries and Aquatic Research · pp. 68–75 · Published 11 Jun 2024
10.9734/ajfar/2024/v26i6776Abstract
The research aimed to assess the acute toxicity of urea fertilizer on juveniles of Oreochromis niloticus. The findings indicated a correlation between increasing concentrations of urea fertilizer and higher mortality rates among the test organisms, with an LC50 value determined at 500 mg/l. Additionally, a rise in total dissolved solids was observed with higher concentrations of urea. Parameters such as temperature, electrical conductivity, dissolved oxygen and pH showed statistically significant (P < 0.05) changes as the concentrations of urea increases. Behavioural responses during the exposure phase included heightened excitability, vigorous swimming behaviours, loss of equilibrium, culminating in mortality. These results unequivocally demonstrate that urea fertilizer at acute concentrations poses significant toxic risks to juvenile Oreochromis niloticus.
Cited by 2
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