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dc.contributor.authorAkinbadewa, Adedamola Oladapo
dc.contributor.authorAdewole, Henry Adefisayo
dc.contributor.authorOlaleye, Victor Folorunso
dc.contributor.authorOgundepo, Gbenga Emmanuel
dc.identifier.publicationAgraarteadus : Journal of Agricultural Science, 2020, vol. 31, no. 2, pp. 122–130est
dc.descriptionSaabunud / Received 25.04.2020 ; Aktsepteeritud / Accepted 09.09.2020 ; Avaldatud veebis / Published online 09.09.2020 ; Vastutav autor / Corresponding author: Henry Adefisayo Adewole e-mail: hensaigebnnos_2k@yahoo.comest
dc.description.abstractThe effect of the sublethal concentration of glyphosate [N-(phosphonomethyl)glycine] on growth and some biochemical indices in the organs of African catfish (Clarias gariepinus, Burchell 1822) fingerlings in a static bioassay setup was studied to provide information on the sublethal toxicity effect of glyphosate on C. gariepinus fingerlings. Two hundred and seventy (270) fingerlings of C. gariepinus (10.02 ± 0.20g) randomly stocked at 30 fish per tank in triplicate were exposed to varying concentration (0, 2.75 ppm and 5.00 ppm) of glyphosate for 70 days. The results of the study showed that the determined growth parameters decrease with increase glyphosate concentration (except specific growth rate). The highest mortality rate was recorded in the treatment with the highest phosphate concentration (5.50 ppm). The enzymatic analyses of the fish tissue revealed that Na+/K+-ATPase activity which ranged from 0.20 to 19.29 μM Pi min–1 mg–1 protein in all the fish tissues increase with increase glyphosate concentration in the fish muscle and liver, and decreases with increase in glyphosate concentration in the gills. However, the muscle and liver malate DH activities decreased with increase in glyphosate concentration while the lactate DH activity increases with increase intoxicant concentration in the muscle (with the highest treatment having a threefold increase). Generally, the enzymatic activities of fish tissues followed the order: Malate DH >Na+/K+-ATPase>Lactate DH. The study concluded that the glyphosate concentration negatively impacted the growth and survival of C. gariepinus and also had a pronounced effect on the enzymatic activities of the studied organs.eng
dc.publisherEstonian Academic Agricultural Societyeng
dc.rightsCreative Commons Attribution 4.0 International (CC BY 4.0) ; openAccesseng
dc.subjectsub-lethal toxicityeng
dc.subjectClarias gariepinuslat
dc.titleSublethal effect of glyphosate [N-(phosphonomethyl)glycine] on growth performance and biochemical activities in some organs of Clarias gariepinus (Burchell, 1822) fingerlingseng
dc.rights.holderAuthors of accepted articles retain all rights to use, reuse, and distribute the published research as long as the author credits the original publication in this journal. The authors submitting to the journal are expected to follow the general ethical guidelines regarding plagiarism. If in doubt consult the ICMJ guidelines on overlapping publications. Once accepted the journal retain the right to print and distribute the manuscript submitted by the author.eng

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Creative Commons Attribution 4.0 International (CC BY 4.0) ; openAccess
Except where otherwise noted, this item's license is described as Creative Commons Attribution 4.0 International (CC BY 4.0) ; openAccess