Bulinus truncatus

About: Bulinus truncatus is a research topic. Over the lifetime, 414 publications have been published within this topic receiving 5640 citations.

Epidemiology of Schistosoma mansoni infection and its relationship to snail distribution in a village at the Nile bank south to Cairo.

Abstract: The relationship between epidemiology of S. mansoni infection and snail distribution at a village, related to Guiza Governorate and lies south to Cairo, was investigated. A systematic random sample of houses was selected. All inhabitants of the houses were invited to share in the study. The Number examined was 704. Urine and stools were examined using Nucleopore filtration and standard Kato-Katz techniques, respectively. Snail collection was done from 35 sites along the water bodies related to the village. Snails collected were examined by cercariae shedding under light. Snail differentiation was done. The results showed that the prevalence of Schistosoma mansoni human infection was 25.1 % and GMEC was 2.4 +/- 5.5. Schistosoma haematobium infection was zero percent. Biomphlaria alexandrina snail infection rate was 3.7% with density equal 0.5 +/- 1.3. Bulinus truncatus snail infection rate was zero percent. The pattern of S. mansoni human infection was closely related to snail distribution and infection. Presence of a hybrid species of B. alexandrina and B. glabrata may explain the epidemiological pattern found in the studied village.

Laboratory studies on the molluscicidal and cercaricidal activities of commiphora molmol.

Abstract: Purified oil and oieo - resin extracts of the Arabian or Somali gum Commiphora molmol (family: Burseraceae) were used as plant molluscicides against the vector snails Biomphalaria alexandrina, Bulinus truncatus and Lymnaea nataiensis. The results indicated that oil extract possesses a higher molluscicidal potency than the oleo-resin. The mortality rate of exposed snails was increased by prolongation of the exposure time. The LC50 values for the oil extract against Lymnaea ncnalertsis were quite lower than (hose utilised with H. alexandrine and B, trunvaius. These values were 5. 4 & 3 ppm. for exposure periods of 24, 48 & 96 hours respectively. Conversely, the oleo - resin extract showed a more pronounced cercaricidal potency than the oil. Total death of cercariae was remarked after 1/4 h of exposure to 10. 5 & 2.5 ppm.

Prevalence of urinary schistosomiasis and Infections withTrematode larval stages in Bulinus truncatus Snails from Qena Upper Egypt

Abstract: 2 Abstract: To de tect the prevalence of urinary schistosomiasis and Bulinus truncatus snail, 150 urine samples and 837 B. truncatus snails were collected from Qena Governorate in Upper Egypt. Infection rates were 15.7% (age-period 8-17 years) among males and 20.7% among females (age-period 9-14 years). The highest collected snails number was found in January and seasonally in autumn, but November and winter have the highest infe ction- p eak. G enerally, 1.9% of B. truncatus had been harboured one or mo re trematode larvae. S chistosome infection was fo und in 8 (0.96%) a nd 6 (0.72%) a s sin gle and double infection. Echinostome cercari ae and xiphidiocercariae have represented as other trematodes i nfection.

Epidémiologie de la schistosomiase en milieu scolaire périurbain de Bamako (République du Mali)

Abstract: L'epidemiologie de la schistosomiase a ete evaluee en octobre 1990 dans trois ecoles primaires d'un quartier periurbain du district de Bamako : Magnambougou. L'enquete de type transversal a porte sur un echantillon aleatoire de 549 eleves âges de 7 a 14 ans. La methode du Kato-Katz et celle de la filtration des urines ont ete utilisees pour la recherche des œufs de schistosome. Le taux de prevalence de Schistosoma haematobium etait de 50 % (256/512) et celui de S. mansoni 5,6 % (26/464). Les enfants âges de 11-14 ans etaient plus touches par S. haematobium (59,4 %), than those from 7-10 years old (35.2 %) (p < 0.005). Among these children, 26,2 % excreted more than 100 eggs per 10 ml of urine. The infection did not varied significantly no matter what the sex is (53.7 and 44.8 % respectively in boys and girls) (p = 0.05). According to the residence, pupils living in Magnambougou were more infected (54.9 %) than those of others district (31.1 %) (p < 0.001). Likewise, S. haematobium infection was more important in A and C schools (64.9 and 73.2 % respectively) than in B school (11.2 %) (p < 0.001). Two major smails species which are the intermediate hosts of urine jschistosomiasis in Mali (Bulinus truncatus and Bulinus globosus) were found in the shelters: however, B. truncatus was only infected in 13.1 % (19/145). Contamination was local and «ruralisation» activities (particularly gardening) seemed to be the most important displaying factor