| the effect of sublethal doses of a molluscicide (bayluscide) on the development of schistosoma mansoni in biomphalaria sudanica tanganyicensis. | the complete eradication of snails from waterbodies is rarely achieved with existing molluscicides. this communication describes laboratory experiments designed to show whether snails surviving such treatment are still capable of transmitting schistosoma mansoni. the treatment, with bayluscide, was given at various times during the development of the infection. snails that survived treatment were as susceptible to infection as were untreated controls but, although the initial survival rate of in ... | 1966 | 5296133 |
| prolonged inhibition of growth in a natural population of the freshwater snail biomphalaria sudanica tanganyicensis (smith) in uganda. | | 1968 | 5679818 |
| the effect of water velocities on the infection of biomphalaria sudanica tanganyicensis exposed to different numbers of schistosoma mansoni miracidia. | | 1966 | 5960111 |
| host-parasite relationships in schistosomiasis. i. the effect of temperature on the infection of biomphalaria sudanica tanganyicensis with schistosoma mansoni miracidia and of laboratory mice with schistosoma mansoni cercariae. | | 1966 | 5960112 |
| seasonal changes in the distribution of biomphalaria sudanica sudanica (martens) in lake zwai, ethiopia. | | 1982 | 7092369 |
| schistosoma mansoni along lake albert, kibale district, western uganda. | four hundred and fifty one human strata living in the three fishing villages of ndiaga, kabukanga and rwabikongoro along lake albert shore in kibale district were examined for s. mansoni infection using kato/katz method. of the 451 people, 409 (90.7%) were found infected with s. mansoni with geometric mean egg count of 561.3 eggs per gram (epg) faeces. males had significantly higher mean egg counts than females, 608.3 epg and 415.6 epg respectively. all s. mansoni infected individuals were treat ... | 1996 | 8964244 |
| first report of a natural hybrid between schistosoma mansoni and s. rodhaini. | experimental crosses between schistosoma mansoni and s. rodhaini have shown that hybrid offspring are viable, yet, until now, no naturally occurring hybrid has been identified. a collection of freshwater snails from nyamlebi-ngoma, ukerewe island, lake victoria, tanzania, yielded a mixed infection within a single biomphalaria sudanica of s. mansoni females and s. mansoni-s. rodhaini hybrid males. the hybrids were identified using deoxyribonucleic acid (dna) sequences. mitochondrial dna 16s and 1 ... | 2003 | 12760671 |
| a newly-identified lineage of schistosoma. | because of their role in causing schistosomiasis, flukes of the genus schistosoma are the best known of all digeneans. the genus has traditionally been divided into four familiar species groups. here we report on three poorly known species of schistosoma, one of which, schistosoma hippopotami, is known from the hippopotamus, one of which is provisionally identified as schistosoma edwardiense, another hippo parasite, and a third that has not previously been described. all were collected from fres ... | 2003 | 12906881 |
| modeling the distribution of schistosoma mansoni and host snails in uganda using satellite sensor data and geographical information systems. | the potential value of modis satellite sensor data on normalized difference vegetation index (ndvi) and land surface temperatures (lst) for describing the distribution of the schistosoma mansoni-"biomphalaria pfeifferi"/biomphalaria sudanica parasite-snail system in inland uganda, were tested by developing annual and seasonal composite models, and iteratively analysing for their relationship with parasite and snail distribution. the dry season composite model predicted an endemic area that produ ... | 2005 | 16044680 |
| microgeographical and tribal variations in water contact and schistosoma mansoni exposure within a ugandan fishing community. | to explore patterns of water contact and schistosoma mansoni exposure by age, sex, tribe and space within a single village. | 2007 | 17550469 |
| transmission studies of intestinal schistosomiasis in lake albert, uganda and experimental compatibility of local biomphalaria spp. | despite ongoing preventive chemotherapy campaigns, intestinal schistosomiasis is hyper-endemic in shoreline communities living along lake albert, uganda. to provide a deeper insight into the local epidemiology of schistosoma mansoni, a variety of field-based studies were undertaken focusing upon schistosome-snail interactions and confirmation of transmission foci. cercarial shedding patterns of field-caught biomphalaria spp., as identified by morphology, were hourly observed over a ten day perio ... | 2010 | 19837188 |
| genotyping natural infections of schistosoma mansoni in biomphalaria alexandrina from damietta, egypt, with comparisons to natural snail infections from kenya. | the distribution of schistosoma genotypes among individuals in snail populations provides insights regarding the dynamics of transmission and compatibility between schistosome and snail hosts. a survey of biomphalaria alexandrina from damietta (nile delta, egypt), an area subjected to persistent schistosomiasis control efforts, provided only 17 snails infected with schistosoma mansoni (6.1% overall prevalence), each shown by microsatellite analysis to have a single genotype infection. by contras ... | 2010 | 21348627 |
| malacological survey and geographical distribution of vector snails for schistosomiasis within informal settlements of kisumu city, western kenya. | abstract: | 2011 | 22152486 |
| relative compatibility of schistosoma mansoni with biomphalaria sudanica and b. pfeifferi from kenya as assessed by pcr amplification of the s. mansoni nd5 gene in conjunction with traditional methods. | schistosoma mansoni is hosted by several species of biomphalaria spp. snails in africa. we were interested in determining if there were differences in compatibility of s. mansoni with biomphalaria sudanica from lake victoria, or with b. pfeifferi from streams and smaller water bodies in kenya. does this parasite develop with equal efficiency in both snail species, and does this have implications for transmission in different habitat types? | 2016 | 27000855 |
| effect of water temperature and population density on the population dynamics of schistosoma mansoni intermediate host snails. | mathematical models can be used to identify areas at risk of increased or new schistosomiasis transmission as a result of climate change. the results of these models can be very different when parameterised to different species of host snail, which have varying temperature preferences. currently, the experimental data needed by these models are available for only a few species of snail. the choice of density-dependent functions can also affect model results, but the effects of increasing densiti ... | 2014 | 25388819 |
| compatibility of ugandan schistosoma mansoni isolates with biomphalaria snail species from lake albert and lake victoria. | in order to investigate the capacity of being intermediate host for schistosoma mansoni, the ugandan f1 generation of biomphalaria snail species that were laboratory-bred from parent populations originally collected from either lake victoria or lake albert was challenged with sympatric and non-sympatric s. mansoni isolates. after a prepatent period of 20 days, a daily 10-hourly snail shedding for cercariae was done to determine the infection rate, cercarial production per hour and survival perio ... | 2013 | 23454225 |
| salt and water regulation in the embryos of freshwater pulmonate molluscs. i. the embryonic environment of biomphalaria sudanica and lymnaea stagnalis. | | 1969 | 5815872 |
| salt and water regulation in the embryos of freshwater pulmonate molluscs. 3. regulation of water during the development of biomphalaria sudanica. | | 1969 | 5795094 |
| salt and water regulation in the embryos of freshwater pulmonate molluscs. ii. sodium uptake during the development of biomphalaria sudanica. | | 1969 | 5795093 |
| preliminary note on the presence of biomphalaria sudanica (martens) in ghana and its susceptibility to a local strain of s. mansoni. | | 1965 | 14269998 |
| molluscicidal properties and selective toxicity of surface-active agents. | of over 100 commercially produced surface-active agents tested against the bilharziasis vector snail biomphalaria sudanica, 13 were found to possess considerable and highly selective molluscicidal properties at concentrations of less than 1 ppm for exposures of 48 hours. against crustacea, fish, water plants, mosquito larvae, mice, and the eggs of b. sudanica, the toxicities of the 13 surfactants were slight. the chemicals did not appear to be absorbed by organic matter to any appreciable extent ... | 1965 | 5294185 |
| observations on the life-cycle of bulinus (physopsis) ugandae mandahl-barth, its ecological relation to biomphalaria sudanica tanganyicensis (smith), and its role as an intermediate host of schistosoma. | | 1964 | 14249025 |
| molluscicidal activity of surface-active agents on the snail biomphalaria sudanica; a vector of bilharzia bilharzia. | | 1964 | 14232554 |