Topic
Bulinus truncatus
About: Bulinus truncatus is a research topic. Over the lifetime, 414 publications have been published within this topic receiving 5640 citations.
Papers published on a yearly basis
Papers
More filters
13 citations
TL;DR: This first detailed malacological study of the crater lakes systems in western Uganda revealed presence of Bulinus species that are either not known or not regionally known to be hosts for S. haematobium, the causing agent of human urogenital schistosomiasis.
Abstract: Human schistosomiasis is the second most important tropical disease and occurs in two forms in Africa (intestinal and urogenital) caused by the digenetic trematodes Schistosoma mansoni and Schistosoma haematobium, respectively. A proposed recent shift of schistosomiasis above a previously established altitudinal threshold of 1400 m above sea level in western Ugandan crater lakes has triggered more research interest there. Based on extensive field sampling in western Uganda and beyond and employing an approach using sequences of the mitochondrial barcoding gene cytochrome c oxidase subunit 1 (cox1) this study aims were: (i) identification and establishment of the phylogenetic affinities of Bulinus species as potential hosts for Schistosoma spp.; (ii) determining diversity, frequency and distribution patterns of Bulinus spp.; and (iii) establishing genetic variability and phylogeographical patterns using Bayesian inference and parsimony network analyses. Out of the 58 crater lakes surveyed, three species of Bulinus snails were found in 34 crater lakes. Bulinus tropicus was dominating, Bulinus forskalii was found in two lakes and Bulinus truncatus in one. The latter two species are unconfirmed potential hosts for S. haematobium in this region. However, Bulinus tropicus is an important species for schistosomiasis transmission in ruminants. Bulinus tropicus comprised 31 haplotypes while both B. forskalii and B. truncatus exhibited only a single haplotype in the crater lakes. All species clustered with most of the haplotypes from surrounding lake systems forming source regions for the colonization of the crater lakes. This first detailed malacological study of the crater lakes systems in western Uganda revealed presence of Bulinus species that are either not known or not regionally known to be hosts for S. haematobium, the causing agent of human urogenital schistosomiasis. Though this disease risk is almost negligible, the observed dominance of B. tropicus in the crater lakes shows that there is a likelihood of a high risk of infections with Schistosoma bovis. Thus, extra attention should be accorded to safeguard wild and domestic ruminants in this region as the population benefits from these animals.
13 citations
Journal Article•
TL;DR: The results suggested that B. truncatus might be potentially more implicated than B. globosus to the extension of the urinary bilharziasis in Cameroon.
Abstract: Pour estimer les risques de l'extension de la bilharziose urinaire au Cameroun, une etude de la compatibilite a confronte Schistosoma haematobium de trois localites relativement eloignees (Mourtourvva, Gounougou et Kekem) a 4 populations de Bulinus truncatus (Gounougou, Ngaoundere, Bertoua et Kekem) et 4 populations de B. globosus (Mourtourwa, Ouroudoukoudje, Bafia et Yaounde). Les descendants directs de mollusques sauvages ont ete exposes aux miracidiums liberes par des oeufs de S. haematobium des urines filtrees de bilharziens. Entre le 25 e et le 60e jour post-infestation, le nombre de mollusques survivants, celui des emetteurs de cercaires et la duree de la periode prepatente ont ete releves. Les differentes populations de B. truncatus ont ete sensibles a toutes les souches du parasite testees alors que seulement 2 des 4 populations de B. globosus ont ete sensibles a S. haematobium de Mourtourwa. Un taux de susceptibilite significativement plus eleve et une periode prepatente significativement plus courte ont ete trouves chez B. truncatus. prepdiente signi La compatibilite des couples homopatriques, meilleure que celle de couples allopatriques, a ete egalement caracterisee par un taux de susceptibilite plus eleve et une duree de la periode prepatente plus courte. B. truncatus jouerait un role potentiellement plus important que B. globosus dans l'extension de la bilharziose urinaire au Cameroun.
13 citations
TL;DR: Monthly samples of Bulinus truncatus were collected during a year from a cattle-breeding farm to detect natural infections with Fasciola hepatica and determine seasonal variations of the prevalence throughout a year.
Abstract: Monthly samples of Bulinus truncatus were collected during a year from a cattle-breeding farm located in the region of Sejnane (North Tunisia) to detect natural infections with Fasciola hepatica and determine seasonal variations of the prevalence throughout a year. Of the 163 adult bulinids, larval forms of F. hepatica were found in 39% of snails. Two peaks in prevalence, the first in June and the second in October, were also noted. Bulinus truncatus can be added to the list of potential intermediate hosts of F. hepatica.
13 citations
TL;DR: Signs of gene flow and cross-fertilization are found, even between snails from the Nile Delta and Upper Egypt, indicating that B. truncatus can travel across large distances in Egypt, which could have serious consequences for disease epidemiology.
13 citations