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The sublethal effects of zinc at different water temperatures on selected haematological variables in Oreochromis mossambicus
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PP Buthelezi V Wepener DP CyrusTrace metals such as zinc play an important role in the normal metabolic functioning of all organisms. However, metals can become toxic if background concentrations are exceeded in the environment. This study investigated the sublethal effects of zinc on the... -
Sublethal effects of manganese on the haematology and osmoregulation of Oreochromis mossambicus after acute exposure
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: I Barnhoorn JHJ van VuurenOreochromis mossambicus were exposed for 96 hours to sublethal manganese concentrations in a continuous flow-through system. The sublethal concentrations were determined from the LC50 value of manganese (1.723mg/l), which included a 10% (172.3mg/l), 15% (259.8mg/l) and 20% (345.6mg/l) concentration of... -
The sublethal effects of copper and lead on the haematology and acid-base balance of the groovy mullet, Liza dumerili
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HM Mzimela --- Coastal Research Unit of Zululand, Department of Zoology, South Africa V Wepener --- Coastal Research Unit of Zululand, Department of Zoology, South Africa DP Cyrus --- Coastal Research Unit of Zululand, Department of Zoology, South AfricaToxicity bioassays were conducted on groovy mullet, Liza dumerili, using copper and lead, in order to assess how these metals affected their blood haematology and acid-base balance. Short-term (96 hours) exposure to lead caused significantly more haematological response [PCO2] than... -
The effect of copper and zinc at neutral and acidic pH on the general haematology and osmoregulation of Oreochromis mossambicus
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: G Nussey --- Department of Zoology, South Africa J HJ van Vuren --- Department of Zoology, South Africa HH du Preez --- Department of Zoology, South AfricaThe objective of this study was to determine the effect of sublethal copper and zinc concentrations at a neutral and an acidic pH, on selected haematological parameters as well as on the total osmolality and electrolyte concentrations of Oreochromis mossambicus... -
Biochemical, haematological and morphological variations in juvenile Clarias gariepinus exposed to Carbendazim® fungicide
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CD Nwani --- Department of Zoology and Environmental Biology, Nigeria MC Omah --- Department of Applied Biology and Biotechnology, Nigeria N Ivoke --- Department of Zoology and Environmental Biology, Nigeria HO Nwamba --- Department of Applied Biology and Biotechnology, Nigeria C Ani --- Department of Applied Biology, Nigeria SU Ogbonna --- Department of Applied Biology, NigeriaThe biochemical, haematological and morphological variations in juvenile Clarias gariepinus exposed to Carbendazim® (methyl-2-benzimidazole carbamate; CBZ), a fungicide effective for the control of fungal pathogens in plants, were determined. The 96 h LC50 value of CBZ determined by probit analysis... -
Acute toxicity effects of ibuprofen on behaviour and haematological parameters of African catfish Clarias gariepinus (Burchell, 1822)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EO Ogueji --- Department of Fisheries and Aquaculture, Nigeria CD Nwani --- Department of Zoology and Environmental Biology, Nigeria SC Iheanacho --- Department of Fisheries and Aquaculture, Nigeria CE Mbah --- Department of Zoology, Zaria CO Okeke --- Department of Biology/Microbiology/Biotechnology, Nigeria A Yaji --- Department of Fisheries, NigeriaIndiscriminate discharge of pharmaceutical waste into the aquatic ecosystem may pose serious health challenges to aquatic biota. The effect of acute exposure to ibuprofen was evaluated using changes in behaviour and haematological parameters under static bio-assay method in Clarias gariepinus... -
Oxidative stress responses of juvenile catfish, Clarias gariepinus exposed to potassium dichromate at sublethal concentrations in south-eastern Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: FN Ekeh --- Department of Zoology and Environmental Biology, Nigeria EN Ekechukwu --- Department of Zoology and Environmental Biology, Nigeria CI Atama --- Department of Zoology and Environmental Biology, Nigeria FI Ezenwajiaku --- Department of Zoology and Environmental Biology, Nigeria CM Ohanu --- Department of Zoology and Environmental Biology, Nigeria JI Nzei --- Department of Zoology and Environmental Biology, Nigeria ION Aguzie --- Department of Zoology and Environmental Biology, Nigeria GE Odo --- Department of Zoology and Environmental Biology, Nigeria UME Dibuah --- Department of Microbiology, NigeriaThe oxidative stress responses of Clarias gariepinus exposed to potassium dichromate at sublethal concentrations for 28 days were studied in 2017. Fish were exposed to 0.165, 0.0825 and 0.033 mg l−1 corresponding to 1/10, 1/20 and 1/50 of the 96... -
Effects of Chromolaena odorata leaf extract on behaviour and haematology of Clarias gariepinus juveniles (Burchell, 1822)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Okoro --- Department of Fisheries and Aquaculture, Nigeria SC Iheanacho --- Department of Fisheries and Aquaculture, Nigeria J Nwakpa --- Department of Fisheries and Aquaculture, Nigeria K Eze --- Department of Fisheries and Aquaculture, NigeriaThe current study investigated the effect of Chromolaena odorata leaf extract on the behaviour and haematology of Clarias gariepinus juveniles. One hundred and fifty (150) juveniles of C. gariepinus (46.02 ± 1.20 g) were exposed to a range of concentrations... -
Nutritional management of a patient with acute myeloid leukaemia complicated by gastrointestinal symptoms and typhlitis
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Zelda Hugo --- Pretoria East Hospital,Leukaemia is the 11th most prevalent cancer worldwide, with acute myeloid leukaemia (AML) representing an acute and highly aggressive subtype that requires urgent medical intervention. Although national data on incidence and mortality in South Africa remain limited, an epidemiological study...