| molluscicidal activity of solanum aculeatum (family: solanaceae) berries against biomphalaria pfeifferi, bulinus globosus and lymnaea natalensis. | aqueous suspensions of powder of sun- or freeze-dried berries of the plant solanum aculeatum (family solanaceae), indigenous in kenya, were tested for molluscicidal activity against biomphalaria pfeifferi, bulinus globosus and lymnaea natalensis under laboratory conditions. one hundred or 50 mg powder l-1 of sun- or freeze-dried berries killed over 60% of the test b. pfeifferi, bul. globosus and l. natalensis. whereas 25 mg l-1 of the sun dried material killed less than 60% of the test snails, s ... | 2009 | 2772517 |
| modelling spatial distribution of snails transmitting parasitic worms with importance to human and animal health and analysis of distributional changes in relation to climate. | the environment, the on-going global climate change and the ecology of animal species determine the localisation of habitats and the geographical distribution of the various species in nature. the aim of this study was to explore the effects of such changes on snail species not only of interest to naturalists but also of importance to human and animal health. the spatial distribution of freshwater snail intermediate hosts involved in the transmission of schistosomiasis, fascioliasis and paramphi ... | 2014 | 24893011 |
| [preliminary evaluation of morbidity due to s. haematobium and s. mansoni in the area of the future adjarala dam in benin]. | the aim of this study was to provide a preliminary assessment of morbidity due to schistosomiasis in the area of the future adjarala dam in benin. we included 412 schoolchildren from five villages in the study. the mean age of the children was 9.4 +/- 2.3 years and the sex ratio (f/m) was 0.94. these children underwent parasitological examination. the children provided urine samples, which were examined by eye, filtered and tested for blood and protein. stool samples were examined using kato's t ... | 2016 | 11125338 |
| a mark-recapture method for ecological studies of schistosomiasis vector snail populations. | mark-recapture methods have been used only sporadically in studies of the population biology of the snail vectors of schistosomiasis, yet mark-recapture has potential advantages for obtaining estimates of absolute abundance and recruitment and loss rates for snail populations in the field. a case study is described that uses bailey's triple catch design to estimate these parameters for bulinus globosus and biomphalaria pfeifferi in a small river in zimbabwe. the assumptions inherent in the desig ... | 1988 | 3257077 |
| urinary schistosomiasis among preschool children in malengachanzi, nkhotakota district, malawi: prevalence and risk factors. | this study was designed to determine the prevalence of and risk factors for schistosomiasis among a group of preschool children in malawi. schistosomiasis burden among preschoolers in malawi is not well documented in the literature. | 2016 | 27217911 |
| effects of endosulfan on predator-prey interactions between catfish and schistosoma host snails. | the effect of the pesticide endosulfan on predator-prey interactions between catfish and schistosoma host snails was assessed in static tank experiments. hybrid catfish (clarias gariepinus × c. ngamensis) and bulinus globosus were subjected to various endosulfan concentrations including an untreated control. the 48- and 96-h lc50 values for catfish were 1.0 and <0.5 µg/l, respectively, whereas the 48- and 96-h lc50 values for snails were 1137 and 810 µg/l. to assess sublethal effects on the feed ... | 2016 | 27033099 |
| schistosomiasis outbreak investigation, empandeni ward, mangwe district, matabeleland south province, june 2012; a case control study. | on 20th of june 2012, 31 pupils from kwite primary school reported to the local clinic complaining of passing bloody urine. a study was conducted to identify factors, the etiology and risks of contracting the disease. | 2014 | 25204324 |
| modelling the spatial and seasonal distribution of suitable habitats of schistosomiasis intermediate host snails using maxent in ndumo area, kwazulu-natal province, south africa. | schistosomiasis is a snail-borne disease endemic in sub-saharan africa transmitted by freshwater snails. the distribution of schistosomiasis coincides with that of the intermediate hosts as determined by climatic and environmental factors. the aim of this paper was to model the spatial and seasonal distribution of suitable habitats for bulinus globosus and biomphalaria pfeifferi snail species (intermediate hosts for schistosoma haematobium and schistosoma mansoni, respectively) in the ndumo area ... | 2016 | 27814746 |
| schistosomiasis in malawi: a systematic review. | schistosomiasis remains an important public health problem that undermines social and economic development in tropical regions of the world, mainly sub-saharan africa. we are not aware of any systematic review of the literature of the epidemiology and transmission of schistosomiasis in malawi since 1985. therefore, we reviewed the current state of knowledge of schistosomiasis epidemiology and transmission in this country and identified knowledge gaps and relevant areas for future research and re ... | 2014 | 25490938 |
| prevalence and transmission dynamics of schistosoma haematobium infection in a rural community of southwestern ebonyi state, nigeria. | a twelve-month epidemio-ecological study on the prevalence, infection intensity, water contact and vector aspects of urinary schistosomiasis was conducted in a rural community of south-west ebonyi state, nigeria, using standard procedures, and involving 894 individuals (527, 58.9% males; and 367, 41.1% females). an overall community prevalence (15.3%) was established with more males (20.7%) than females (7.6%) being significantly positive for both micro-and macro-haematuria (χ² = 0.806; df = 1, ... | 2014 | 24862047 |
| lampyridae larva: a natural predator of schistosome vector snails in liberia. | a lampyrid larva (coleoptera) was found during snail collecting in liberia, west africa to be a natural predator of biomphalaria pfeifferi and bulinus globosus. | 1980 | 7369451 |
| the effects of quarry mining on the epidemiology of schistosoma haematobium in schoolchildren, in ishiagu, south-eastern nigeria. | over the last two decades there has been a noticeable increase in the activities of quarry-mining companies in the ishiagu area of south-eastern nigeria. these activities have produced an ever-growing number of abandoned quarry pits that usually quickly fill with water and appear to become suitable habitats for the freshwater snails that may act as intermediate hosts of schistosoma haematobium. to examine the potential role of quarry mining on the prevalence of urinary schistosomiasis caused by ... | 2006 | 16492363 |
| mathematical simulation of an aquatic snail population. | techniques for controlling the intermediate snail hosts of schistosomiasis have had to be evaluated by field trials, since the complexity of snail population dynamics has so far made it impossible to predict the effects of these techniques and thereby avoid costly field testing.however, in laboratory studies with biomphalaria glabrata it was found that the fecundity of these snails was directly proportional to f/nv, where f is the total amount of food in the habitat, n the number of snails, and ... | 1967 | 5301741 |
| modelling climate change impact on the spatial distribution of fresh water snails hosting trematodes in zimbabwe. | freshwater snails are intermediate hosts for a number of trematodes of which some are of medical and veterinary importance. the trematodes rely on specific species of snails to complete their life cycle; hence the ecology of the snails is a key element in transmission of the parasites. more than 200 million people are infected with schistosomes of which 95% live in sub-saharan africa and many more are living in areas where transmission is on-going. human infection with the fasciola parasite, usu ... | 2014 | 25498001 |