Showing papers on "Bulinus truncatus published in 2012"
DOI•
01 Jan 2012
TL;DR: The results suggest a likelihood and potential spread of urinary schistosomiasis into other areas of Abeokuta in the absence of snail control measures or mass chemotherapy and the geo-spatial distribution of Bulinus sp.
Abstract: Bulinus spp, are freshwater snails that serve as intermediate hosts of Schistosoma heamatobium which cause urinary schistosomiasis in human beings. The knowledge of their spatial distributions can be used to map the extent and risk of the disease in endemic areas. This paper therefore, presents the geo-spatial distribution of Bulinus sp. in Abeokuta in Ogun State. Bulinus snails collected from 31 water bodies consisting of 19 rivers, 9 streams, 2 dams and 1 canal were examined for infection. A total of 58 Bulinus snails made up of Bulinus forskalii 2 (3.4%), and Bulinus truncatus 56 (96.4%) were collected respectively. The B. truncatus was collected from 15 sites out of which infected B. truncatus was collected from 12 sites. The regression analysis of Bulinus distribution using remotely-sensed environmental data showed that rainfall was the only significant predictor of the distribution of B. truncatus (B= 26.690, Sig= 0.040). (B= -3.182, Sig= 0.050). A predictive risk map constructed for B. truncatus indicated the probability presence of 1.0 for Abeokuta area. These results suggest a likelihood and potential spread of urinary schistosomiasis into other areas of Abeokuta in the absence of snail control measures or mass chemotherapy. Keywords: geo-spatial distribution, Bulinus truncatus, Schistosoma heamatobium , Abeokuta, Nigeria The Zoologist , 10:53-60 (2012)
6 citations
TL;DR: The inter- and intra-specific variations in populations of Bulinus truncatus and Bulinus beccari, the intermediate hosts of Schistosoma haematobium in Saudi Arabia, are determined and species-specific primers to identify these snails are developed as a first step in the development of multiplex PCR for simultaneously identifying the snails and diagnosing its infections in a single step.
4 citations
TL;DR: The present study showed that the distribution of the intermediate host snails of Fasciola sp.
Abstract: The present study showed that the distribution of the intermediate host snails of Fasciola sp. and Schistosoma sp. varied among the five surveyed Egyptian governorates. It was found that the ratios of distribution of Lymnaea natalensis, Bulinus truncatus and Biomphalaria alexandrina snails of the total surveyed sites were 44.1%, 26.9% and 4.9% respectively. Moreover, infected L. natalensis, B. truncatus and B. alexandrina snails in these sites were 1.96%, 3.4% and 0.98% respectively. However, infected L. natalensis and B. truncatus were found in Damietta and Beheira, while infected B. alexandrina were found only in Giza. Spring was the highest season in percentage of collected snails (38.9%), while summer was the lowest one (8.8%). L. natalensis, B. truncatus and B. alexandrina showed high distribution in Ismailia, Damietta and Giza governorates as represented by 4.16, 4.38 and 0.51 snails/site respectively. Some environmental factors were found affecting the distribution of snails. The means of pH and temperature in positive sites for vector snails were 6.8 and 26.7°C respectively. L. natalensis, B. truncatus appeared in water of electric conductivity mean of 415.5 µ.mhos/cm and 284.5 ppm of mean total dissolved salts, while B. alexandrina was found at 481 µ.mhos/cm and 603 ppm respectively.
4 citations