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Effects of 17-α-estradiol on a free-living marine nematode community: a microcosm experiment
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Essid --- Laboratory of Environment Biomonitoring, Coastal Ecology and Ecotoxicology Unit, Tunisia F Boufahja --- Laboratory of Environment Biomonitoring, Coastal Ecology and Ecotoxicology Unit, Tunisia H Beyrem --- Laboratory of Environment Biomonitoring, Coastal Ecology and Ecotoxicology Unit, Tunisia P Aïssa --- Laboratory of Environment Biomonitoring, Coastal Ecology and Ecotoxicology Unit, Tunisia E Mahmoudi --- Laboratory of Environment Biomonitoring, Coastal Ecology and Ecotoxicology Unit, TunisiaA microcosm experiment was used to examine the effects of 17-α-estradiol on a nematode community. Four 17-α-estradiol concentrations (0.15, 0.31, 0.62 and 1.24 ppm) were tested, and effects were examined after 30 days. Significant differences were noted between nematode assemblages... -
Toxicological requirements for risk assessment of shellfish contaminants: a review
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R MundayThere is increasing concern by consumers with regard to the health aspects and safety of foodstuffs. Most food additives and contaminants are controlled by regulatory authorities, with Acceptable Daily Intakes (ADIs) having been set on the basis of detailed acute... -
Consumption of sachet water in Nigeria: quality, public health and economic perspectives
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: David O. Omole --- Department of Civil Engineering, South Africa Julius M. Ndambuki --- Department of Civil Engineering, South Africa Kehinde Balogun --- Department of Civil Engineering, NigeriaDemand for drinking water is met by different methods in different parts of the world. Water packaging into polyethylene sachets (as a form of water vending) has assumed an innovative status which has spread from its origin in Nigeria to... -
Information on nutritional supplement labels: time for legislation?
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: G. Gabriels --- Division of Clinical Pharmacology, Department of Medicine, M. Lambert --- MRC/UCT Research Unit for Exercise Science and Sports Medicine, Department of Human Biology, P. Smith --- Division of Clinical Pharmacology, Department of Medicine,Background: Nutritional supplements have received attention both from food manufacturers, as a means of marketing the added value to health; and from consumers, in terms of awareness, education, and improved health. To assist this process, it is important to have... -
Human health risks of metals and metalloids in muscle tissue of Synodontis zambezensis Peters, 1852 from Flag Boshielo Dam, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JR Sara --- Department of Biodiversity, South Africa SM Marr --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa WJ Smit --- Department of Biodiversity, South Africa LJC Erasmus --- Department of Physiology and Environmental Health, South Africa WJ Luus-Powell --- Department of Biodiversity, South AfricaMuscle tissue from 63 Synodontis zambezensis collected bimonthly in 2013 at Flag Boshielo Dam were analysed for metals and metalloids in a desktop human health risk assessment. The Hazard Quotient, based on a weekly meal of 67 g of fish... -
PAHs, OCPs and PCBs in sediments from three catchments in Durban, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Vogt --- Unit for Environmental Sciences and Management, South Africa R Pieters --- Unit for Environmental Sciences and Management, South Africa BK Newman --- Coastal Systems Research Group, Council for Scientific and Industrial Research, South AfricaPolycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) were analysed from sediment samples collected in 2012 from rivers, surface runoff canals and estuaries in three highly urbanised catchments in durban, KwaZulu-Natal, South Africa. PAHs were ubiquitous, at... -
Human health risks of metalloids and metals in muscle tissue of silver carp Hypophthalmichthys molitrix (Valenciennes, 1844) from Lake Flag Boshielo, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JR Sara --- Department of Biodiversity, South Africa SM Marr --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa NM Chabalala --- Department of Biodiversity, South Africa WJ Smit --- Department of Biodiversity, South Africa LJC Erasmus --- Department of Physiology and Environmental Health, South Africa WJ Luus-Powell --- Department of Biodiversity, South AfricaThe Olifants River, a major tributary of the Limpopo River, is one of the most polluted rivers in South Africa. Consequently, concerns regarding the human health impact of long-term consumption of fish from the Olifants River have been raised in...