Bulinus globosus snails maintained at average temperatures of 15. Bulinus truncatus was consistently absent from the previous surveys. Precisely, to gain a better and more comprehensive understanding of the effects of temperature on bulinus globosus schistosoma haematobium system ka linda and coworkers exposed juvenile snails. Survival rates of bulinus globosus during aestivation. Files are available under licenses specified on their description page. Bulinus is a genus of small tropical freshwater snails, aquatic gastropod mollusks in the family planorbidae, the ramshorn snails and their allies. Despite their importance, the diversity of these intermediate host snails and their evolutionary history is still unclear in zimbabwe.
Read cockroach allatostatinlike immunoreactivity in the central nervous system of the freshwater snails bulinus globosus planorbidae and stagnicola elodes lymnaeidae, general and comparative. All structured data from the file and property namespaces is. Modelling the spatial and seasonal distribution of. Identification of snails within the bulinus africanus. Plant datasheet for cheilocostus globosus click on a thumbnail to load full sized image. Spatial and temporal heterogeneity in the population dynamics of bulinus globosus and biomphalaria pfeifferi and in the epidemiology of their infection with schistosomes volume 98 issue 1 m. Hostparasite relationships of bulinus globosus and b. Schistosomiasis is a snailborne disease endemic in subsaharan africa transmitted by freshwater snails. The ribosomal internal transcribed spacer its regions of both bulinus globosus and b. Snail survey data collected in a small village in kenya from april 1984 to march 1991 were used to analyze the interaction between bulinus globosus intermediate host of schistosoma haematobium and cleopatra ferruginea unsusceptible snail. International notes centers for disease control and. Young bulinus physopsis globosus performed male copulatory activity and crossfertilized other snails before their female reproductive tracts were mature. Influence of desiccation on the survival of bulinus globosus under laboratory conditions.
Simulation of population dynamics of bulinus globosus. Spatial and temporal heterogeneity in the population. Mapping freshwater snails in northwestern angola lstm online. Effect of temperature on the bulinus globosus schistosoma. Angola, schistosomiasis transmission, bulinus globosus, biomphalaria spp. Molecular characterization and distribution of schistosoma.
Abstract this study was carried out to investigate and give an update record of the prevalence and intensity of schistosoma infections and also to identify the snail host that can exacerbate the risk of schistosoma infections in abini, biase local government area of cross river state. Molecular diversity of bulinus species in madziwa area, shamva. Growth, egg laying and survival were followed for various densities of the two species in either singlespecies or mixedspecies aquaria, i. Secondly, bulinus species are hermaphrodite and can reproduce both by crossfertilization andor selffertilization, and each of these modalities induces different genetic consequences. The two most immature snails showed preputial eversion when secretion was present only in the muciparous gland and at the carrefour region of the oviduct. Bulinus globosus is an intermediate host of schistosoma haematobium, the causative agent of human urinary schistosomiasis. Methods for the analysis of comparative data in evolutionary biology. Bulinus globosus snails in southern ghana 60km from accra as well as in streams and ponds. Given that these groups include potential hosts for s. This is a cause for concern given that this mollusc is currently transmitting the. Lewis and charles short 1879 a latin dictionary, oxford. All structured data from the file and property namespaces is available under the creative commons cc0 license. Lewis 1891 an elementary latin dictionary, new york. Location of bulinus physopsis globosus by miracidia of schistosoma haematobium.
Several snail intermediate hosts were found in mali. The molluscicidal effects of hyptis suaveolens on different stages of bulinus globosus in the laboratory ot salawu, ab odaibo 1024110247. The aim of this paper was to model the spatial and seasonal distribution of suitable habitats for bulinus globosus and biomphalaria pfeifferi snail species. Pdf allelic polymorphism of makoei sheep myostatin gene identified by polymerase chain reaction and single strand conformation polymorphism m farhadian, a hashemi, k mardani, r darvishzadeh, m ranjbari.
When the eggs are released into the freshwater bodies, they hatch into miracidia and penetrate a suitable snail intermediate host of the genus bulinus with species such as bulinus truncatus, b. Allen press on behalf of the american society of parasitologists. Results overall, 1923 bulinus truncatus, 255 bulinus globosus and 1424 bulinus forskalii were obtained. Abstract this study was carried out to investigate and give an update record of the prevalence and intensity of schistosoma infections and also to identify the snail. However, the extent to which this will happen is not well understood. An inverse correlation was observed between the two snail populations. Using a hostparasite system involving bulinus globosus and schistosoma haematobium, we assessed the effect of temperature on snail. Data are taken from previous field and laboratory studies and from present experiments.
Serial dilut ons of the chemical were used in 96 h exposure tests on the molluscs, followed by postexposure maintenance in the laboratory. Similarly, the african snail bulinus globosus suffers a 50% reduction in fecundity and an 18% reduction in hatching rate, under obligate selffertilization, indicating a significant genetic load of recessive lethal genes 163. Malacological survey and geographical distribution of. Peace corps volunteers malawi, 1992 schistosomiasis continuedschistosomiasis i. Microsatellites in the freshwater snail bulinus globosus. These regions are potentially species source pools for the crater lakes. Given that increase in temperature may alter hostparasite relationships, the anticipated rise in temperature due to global warming might change transmission patterns of certain diseases. Resistance of bulinus physopsis globosus, bulinus ph. Bulinus globosus, a key intermediate host for schistosoma haematobium that causes urinary schistosomiasis, is a hermaphroditic freshwater planorbid snail species that inhabits patchy and transient water bodies prone to large seasonal variations in water availability. Selffertilization versus crossfertilization in the hermaphroditic freshwater snail bulinus.
Pdf effect of temperature on the bulinus globosus schistosoma. Although schistosomiasis is generally considered a rural phenomenon, infections have. This is essential especially in the allocation of limited resources. Pdf microsatellites in the freshwater snail bulinus. Pdf 552 kb pdf download buy article permissions and reprints. The effects of permethrin on reproduction and survival of bulinus globosus and bulinus truncatus are reported. It is shown that although a low water velocity does not sweep away adhering snails, it carries away snails releasing their hold and crawling along the water surface in search of new food sources. Six microsatellite loci were isolated and characterized in bulinus globosus, a freshwater snail with a wide distribution throughout sub. Read alteration in the status of glutathione transferase of the water snail, bulinus globosus, during aestivation and recovery, animal biology on deepdyve, the largest online rental. Pdf studies on the biology and population parameters of bulinus. The simulation model and the results presented here provide useful information on bulinus globosus, the main intermediate host snail of.
This study was conducted in the gastropod mollusks biomphalaria pfeifferi and bulinus globosus in schistosomiasis endemic area in the region of man, western cote divoire. Bulinus globosus, a key intermediate host for schistosoma haematobium that causes urinary schistosomiasis, is a hermaphroditic freshwater planorbid snail species that inhabits patchy and. Krauss, 1848 accepted, alternate representation bulinus pyrgophysa crosse, 1879 accepted, alternate representation bullinus oken, 1815 an incorrect subsequent spelling of. Precisely, to gain a better and more comprehensive understanding of the effects of temperature on bulinus globosus schistosoma haematobium system ka linda and coworkers exposed juvenile. Pdf allelic polymorphism of makoei sheep myostatin gene identified by polymerase chain reaction and single strand conformation polymorphism m farhadian, a hashemi, k mardani, r darvishzadeh, m. Time p biomphalaria pfeifferi and lymnaea natalensis to experimental desiccation. The influence of water velocities of less than 30 cms on drifting of bulinus globosus in a natural stream was investigated. Population genetic structure of the schistosomevector snail bulinus. Recent observations have recorded the coexistence of this mollusc with b. Estimates are made of survival rates for bulinus globosus an important snail intermediate host for schistosoma haematobium, of 5mm shell length during aestivation in mud substrates. Studies on the biology and population parameters of. Bulinus globosus is a species of a tropical freshwater snail with a sinistral shell, an aquatic gastropod mollusk in the family planorbidae, the ramshorn snails and their allies. Competition between bulinus tropicus and bulinus globosus was investigated under laboratory and quasifield conditions.
Infected bulinus globosus snails an intermediate host of s. The kenyan shell material is compared to a selection of b. On pemba island, both bulinus globosus and bulinus nasutus are important intermediate hosts of s. Microsatellites were tested using 32 snails from four populations collected from pemba and unguja islands of zanzibar. Restriction products were separated by polyacrylamide gel electrophoresis and visualized by ethidium bromide staining. Read cockroach allatostatinlike immunoreactivity in the central nervous system of the freshwater snails bulinus globosus planorbidae and stagnicola elodes lymnaeidae, general and comparative endocrinology on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Vol 10 no 50 2011 african journal of biotechnology. The distribution of schistosomiasis coincides with that of the intermediate hosts as. Methods using a hostparasite system involving bulinus globosus and schistosoma haematobium, we. Author summary the implementation of schistosomiasis controlelimination strategies depend on accurate estimations and predictions of the changes in the snail and parasite population. Snails taken from the field 58 individuals were confined to naturallydrying mud substrates in laboratory aquaria for.
Bulinus globosus, one of the intermediate hosts of the genus schistosoma, is an hermaphrodite freshwater snail species. A colony of bulinus pbyopsis globosus has been established in our laboratory for testing. Location of bulinus physopsis globosus by miracidia of schistosoma. Pdf background given that increase in temperature may alter hostparasite relationships, the. Influence of desiccation on the survival of bulinus. Snail survey data collected in a small village in kenya from april 1984 to march 1991 were used to analyze the interaction between bulinus globosus intermediate host of schistosoma haematobium.
Time p jan 10, 2020 bulinus species are freshwater snails that transmit the parasitic trematode schistosoma haematobium. Molecular characterization of bulinus globosus and b. Only the latter species serves as intermediate host for schistosoma haematobium in zimbabwe. Phylogeny of seven bulinus species originating from. Krauss, 1848 accepted, alternate representation bulinus pyrgophysa crosse, 1879 accepted, alternate representation bullinus oken, 1815 an incorrect subsequent spelling of bulinus. The distribution of schistosomiasis coincides with that of the intermediate hosts as determined by climatic and environmental factors. Differentiating snail intermediate hosts of schistosoma. Bulinus globosus is an intermediate host of schistosoma. The bulinus africanus species group planorbidae of freshwater snails has been reported to be represented in zambia by. Media in category bulinus globosus the following 2 files are in this category, out of 2 total. Microsatellites in the freshwater snail bulinus globosus gastropoda. Sep 01, 2016 this page was last edited on 3 june 2018, at. Pdf background temperature is an important factor that influences the biology and ecology of intermediate host ih snails and the schistosome. Aquatic snails of the bulinus africanus group in zambia identified.
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