Glyphosate (N-phosphonomethyl glycine) is a broad spectrum systemic herbicide used extensively in weed control. The present study was designed to evaluate the toxicity effect of glyphosate on 300 post juveniles (50g±0.96g; 22cm±0.02) of Clarias gariepinus (Burchell, 1822) after exposure to acute concentration levels of 31, 33, 35, 37 and 39 mg glyphosate/L of clean water. The experiment was completely randomized as each treatment were all replicated thrice. Glyphosate toxicity (96 hr LC50) to Clarias gariepinus was determined at 35 mgL-1 after exposure by probit analysis. Based on the LC50 value, three sublethal test concentrations of 3.5, 7, 17.5mgL-1 corresponding to 1/10 LC50=3.5mgl-1, 1/5 LC50=7mgl-1, ½ LC50=17.5mgl-1 were selected for sub lethal experiment. A set of fish were also maintained simultaneously in water as a control experiment during the exposure periods. Blood samples were taken at intervals of day 1, 4 and 8 for assessment of hematology and micronucleus frequency. The results showed that glyphosate is toxic to Clarias gariepinus and fish generally though dose dependent as it significantly (p
Mbaogu, K. (2020). The Micro Nucleus, Haematology and Toxicity effects of Glyphosate-based Herbicide 'Glysate' on post juveniles of African Catfish (Clarias Gariepinus) Burchell 1822. Afribary. Retrieved from https://afribary.com/works/kenny-final-project
Mbaogu, Kenedy "The Micro Nucleus, Haematology and Toxicity effects of Glyphosate-based Herbicide 'Glysate' on post juveniles of African Catfish (Clarias Gariepinus) Burchell 1822" Afribary. Afribary, 28 Apr. 2020, https://afribary.com/works/kenny-final-project. Accessed 18 Jul. 2025.
Mbaogu, Kenedy . "The Micro Nucleus, Haematology and Toxicity effects of Glyphosate-based Herbicide 'Glysate' on post juveniles of African Catfish (Clarias Gariepinus) Burchell 1822". Afribary, Afribary, 28 Apr. 2020. Web. 18 Jul. 2025. < https://afribary.com/works/kenny-final-project >.
Mbaogu, Kenedy . "The Micro Nucleus, Haematology and Toxicity effects of Glyphosate-based Herbicide 'Glysate' on post juveniles of African Catfish (Clarias Gariepinus) Burchell 1822" Afribary (2020). Accessed July 18, 2025. https://afribary.com/works/kenny-final-project