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Laboratory and quasi-field studies on interspecific competition between Bulinus globosus and B. tropicus (Gastropoda: Planorbidae)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: B Ndlela H MadsenCompetition between Bulinus tropicus and Bulinus globosus was investigated under laboratory and quasi-field conditions. Only the latter species serves as intermediate host for Schistosoma haematobium in Zimbabwe. Growth, egg laying and survival were followed for various densities of the two... -
Interactions between fish and snails in a Zimbabwe pond, with particular reference to Sargochromis codringtonii (Pisces: Cichlidae)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Paul Makoni MosesJ Chimbari Henry MadsenThe impact of fishes on snail densities in a 100 x 12m pond was assessed from October 2000 to May 2002, using a fish exclosure experiment. Snail species included numerically dominant Bulinus globosus (ca 85%) as well as B. tropicus,... -
Susceptibility of schistosome host snails to predation by sciomyzid flies (Diptera: Sciomyzidae) in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Rajendra Maharaj Inbarani Naidoo ChristopherC AppletonAfrotropical sciomyzids are predators of freshwater pulmonate snails. Studies have indicated that these flies may play a role in controlling medically important (target) snail populations, especially snail intermediate hosts of schistosomes. This study investigated the preferential feeding of Sepedon scapularis... -
Interactions between Bulinus globosus and B. tropicus (Gastropoda: Planorbidae) in a pond experiment in Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Busani Ndlela MosesJ Chimbari Henry MadsenBulinus tropicus, which does not transmit Schistosoma haematobium, has been suggested for biological control of the schistosome intermediate host Bulinus globosus in Zimbabwe. The possible competition between B. tropicus and B. globosus was evaluated under semi-natural conditions in an enclosure... -
Impact of Sargochromis codringtonii (Teleostei: Cichlidae) on pulmonate snails in irrigation ponds in Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MosesJ Chimbari Paul Makoni Henry MadsenThe impact of Sargochromis codringtonii on pulmonate snails, including those that transmit schistosomiasis, was assessed over 29 months in 2 800m2 irrigation ponds. Snail populations in fishless ponds were first monitored for 10 months before 85 S. codringtonii were introduced... -
Micro-distribution of freshwater snails before and after water flow events in hydraulic structures in Tessaout Amont irrigation system, Morocco
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H Laamrani H Madsen E BoeleeBulinus truncatus, the intermediate host of Schistosoma haematobium, is widely distributed in modern irrigation schemes in Morocco. These schemes have intermittent irrigation and canals dry out in between irrigation periods. The snail species is therefore associated with the 'siphon boxes'... -
Risk factors for anaemia in pregnancy in rural KwaZulu-Natal, South Africa: Implication for health education and health promotion
Item type: Journal Article • Journal: South African Family Practice • Authors: M Hoque --- Empangeni Hospital, E Hoque --- Mangosuthu University of Technology, SB Kader --- Wentworth Hospital,Background: Anaemia in pregnancy is a major public health problem in developing countries. It is associated with an increased risk of maternal and perinatal morbidity and mortality. A high rate of anaemia in pregnancy in the rural population of KwaZulu-Natal... -
Preliminary study on the culture and breeding of Bulinus nyassanus (Mollusca: Pulmonata) under laboratory conditions
Item type: Journal Article • Journal: African Zoology • Authors: Mary Lundeba --- Aquaculture and Fisheries Science Department, Malawi Jeremy S. Likongwe --- Aquaculture and Fisheries Science Department, Malawi Henry Madsen --- DBL Institute for Health Research and Developmemnt, Denmark Jay R. Stauffer --- School of Forest Resources, Penn State University, U.S.A.We successfully artificially cultured and bred Bulinus nyassanus, endemic to Lake Malawi and an intermediate host of Schistosoma haematobium. The laboratory culture of this snail species is essential in relation to further experiments on the feasibility of using facultative snail-eating... -
Potential of Metriaclima lanisticola (Teleostei: Cichlidae) for biological control of schistosome intermediate host snails
Item type: Journal Article • Journal: African Zoology • Authors: Mary Lundeba --- Aquaculture and Fisheries Science Department, Malawi Jeremy S. Likongwe --- Aquaculture and Fisheries Science Department, Malawi Henry Madsen --- DBL Center for Health Research and Development, Denmark Jay R. Stauffer --- School of Forest Resources, Penn State University, U.S.A.Metriaclima lanisticola, a native cichlid of Lake Malawi, was studied under laboratory conditions to evaluate its possible role as a predator of snails (Bulinus spp.). Bulinus globosus, B. nyassanus and B. tropicus were used as prey. B. globosus and B... -
A study of hurdles in mass treatment of schistosomiasis in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: A Randjelovic --- Faculty of Medicine, Norway SG Frønæs --- Faculty of Medicine, Norway M Munsami --- The Kwazulu-Natal Department of Health, South Africa JD Kvalsvig --- Discipline of Public Health Medicine, Nelson R Mandela School of Medicine, South Africa SG Zulu --- Discipline of Public Health Medicine, Nelson R Mandela School of Medicine, South Africa S Gagai --- Discipline of Public Health Medicine, Nelson R Mandela School of Medicine, South Africa A Maphumulo --- Discipline of Public Health Medicine, Nelson R Mandela School of Medicine, South Africa L Sandvik --- Department of Biostatistics, Epidemiology and Health Economics, Norway SG Gundersen --- Research Department, Norway EF Kjetland --- Discipline of Public Health Medicine, Nelson R Mandela School of Medicine, South Africa M Taylor --- Discipline of Public Health Medicine, Nelson R Mandela School of Medicine, South AfricaBackground: It has been estimated that 700 million people worldwide and 5.2 million people in South Africa are in need of annual treatment for schistosomiasis. In accordance with the current policy the Department of Health (DoH) in KwaZulu-Natal province, South... -
A Patient from Limpopo province presenting with haematuria: what is the diagnosis?
Item type: Journal Article • Journal: Southern African Journal of Epidemiology and Infection • Authors: Zaeem Ebrahim --- Department of Radiology, Kalafong Hospital, Nausheen Khan --- Department of Radiology, Kalafong Hospital, Farzanah Ismail --- Department of Radiology, Kalafong Hospital,We present a quiz-case of a 28-year-old female patient, from Limpopo province, who presented with haematuria, hepatosplenomegaly and caput medusae. Computed tomography (CT) imaging fndings are provided. The diagnosis is provided in the discussion below. -
Current status of urinary schistosomiasis in communities around the Erinle and Eko-Ende Dams and the implications for schistosomiasis control in Nigeria
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: A O Hassan --- Department of Medical Microbiology and Parasitology Lautech Teaching Hospital, Nigeria A O J Amoo --- Medical Mecrobiology and Parasitology Department, Nigeria O P Akinwale --- Molecular Parasitology Research Laboratory, Public Health Division, Nigerian Institute of Medical Research, Nigeria A M Deji-Agboola --- Medical Mecrobiology and Parasitology Department, Nigeria M A Adeleke --- Public Health Entomology and Parasitology Unit, Nigeria P V Gyang --- Molecular Parasitology Research Laboratory, Public Health Division, Nigerian Institute of Medical Research, NigeriaSchistosomiasis is an endemic disease in many parts of the world and the disease is associated with water resource development projects, such as dams, irrigation schemes, and rice and fish farming. The present study was designed to determine the prevalence... -
Geographical distribution and habitats of the freshwater snail Bulinus reticulatus and its susceptibility to Schistosoma haematobium miracidia under experimental conditions
Item type: Journal Article • Journal: African Zoology • Authors: Kenné N. de Kock [AN0001] Corrie T. Wolmarans --- School of Environmental Sciences and Development, Zoology, South Africa Hylton D. Strauss --- School of Environmental Sciences and Development, Zoology, South Africa Madeleine Killian --- School of Environmental Sciences and Development, Zoology, South Africa Desireé C. Maree --- School of Environmental Sciences and Development, Zoology, South AfricaA brief account is given of the geographical distribution and habitats of Bulinus reticulatus as reflected by the 278 samples currently on record in the database of the National Freshwater Snail Collection, Potchefstroom University. The susceptibility of field specimens and... -
The role of snail aestivation in transmission of schistosomiasis in changing climatic conditions
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: O Rubaba --- College of Health Sciences, South Africa MJ Chimbari --- College of Health Sciences, South Africa S Mukaratirwa --- School of Life Sciences, South AfricaSchistosomiasis vector snails are subjected to extreme seasonal changes, particularly in ephemeral rivers and lentic waterbodies. In the tropics, aestivation is one of the adaptive strategies for survival and is used by snails in times of extremely high temperatures and... -
Schistosomiasis risk factors based on the infection status among school-going children in the Ndumo area, uMkhanyakude district, South Africa
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Muhubiri Kabuyaya --- School of Nursing and Public Health, Department of Public Health Medicine, South Africa Moses John Chimbari --- School of Nursing and Public Health, Department of Public Health Medicine, South Africa Tawanda Manyangadze --- School of Nursing and Public Health, Department of Public Health Medicine, South Africa Samson Mukaratirwa --- School of Life Sciences, South AfricaBackground: Schistosomiasis remains a public health burden in South Africa, particularly in KwaZulu-Natal. The study aimed to identify the risk factors for transmission of Schistosoma haematobium among school-going children in the Ndumo area of uMkhanyakude district, KwaZulu-Natal. -
Environmental factors influencing the distribution and prevalence of Schistosoma haematobium in school attenders of ILembe and uThungulu Health Districts, KwaZulu-Natal Province, South Africa
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Nkosinathi Banhela --- Discipline of Public Health Medicine, South Africa Myra Taylor --- Discipline of Public Health Medicine, South Africa Siphosenkosi Gift Zulu --- Discipline of Public Health Medicine, South Africa Linnea Sund Strabo --- Norwegian Centre for Imported and Tropical Diseases, Department of Infectious Diseases Ullevaal, Norway Eyrun Floerecke Kjetland --- Discipline of Public Health Medicine, South Africa Svein Gunnar Gundersen --- Research Department, NorwaySchistosoma haematobium infection is reported to facilitate the development of urogenital diseases. Its symptoms include haematuria, dysuria and tiredness, and it may cause cognitive decline in children. The prevalence of S. haematobium infection needs to be known in endemic areas... -
The potential for using red claw crayfish and hybrid African catfish as biological control agents for Schistosoma host snails
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: C Monde --- Copperbelt University, Zambia S Syampungani --- Copperbelt University, Zambia A Rico --- Madrid Institute for Advanced Studies (IMDEA) in Water, Science and Technology Campus, Spain PJ van den Brink --- Wageningen University, The NetherlandsThe potential of red claw crayfish and hybrid African catfish (Clarias gariepinus and Clarias ngamensis) as predators for Schistosoma host snails was evaluated in 2014 by monitoring the consumption of snails by crayfish and catfish in experimental tanks over time... -
Crayfish, catfish and snails: the perils of uncontrolled biological control
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BE Marshall --- Great North Road, New ZealandA recent proposal that the Australian redclaw crayfish Cherax quadricarinatus and hybrid catfish could potentially control the snail hosts of schistosomiasis has been criticised on the grounds that crayfish pose a severe threat to aquatic ecosystems into which it might... -
Changing patterns of Schistosoma host snail population densities in Maun, Botswana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Chimbari --- , South Africa C Kalinda --- , South Africa N Siziba --- , ZimbabweChanges in the inflow of water into the Thamalakane River had been predicted to alter snail population dynamics and influence the risk of schistosomiasis transmission in Maun. We determined the abundance of schistosome intermediate host snails along the Thamalakane River... -
Parasitic infections and environmental influences on verbal memory and learning potential of isiZulu speaking pre-school children
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Xolisile I. Mazibuko --- , South Africa Moses J. Chimbari --- , South AfricaThis study aimed to explore the effects of parasitic infections, demographic, and contextual factors on verbal memory and learning potential. Applying a cross sectional, experimental, and comparative design, we sampled 112 black pre-school children from a historically poor rural South...