Bulinus truncatus

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

The influence of temperature, darkness, and starvation on growth and survival of Helisoma duryi, Biomphalaria alexandrina and Bulinus truncatus.

Abstract: The influence of 10 degrees, 18 degrees, 26 degrees, 28 degrees and 33 degrees C, different periods of complete darkness and starvation on growth and survival of H. duryi, B. alexandrina and B. truncatus were studied. The optimum temperature for the growth and survival was about 26 degrees C. Survivorship and growth rates decreased proportionately according to starvation period. However, darkness had no significant effect on the growth of B. truncatus and H. duryi. Under the chosen experimental conditions H. duryi revealed higher tolerance limits and survival rates than B. alexandrina and B. truncatus. The potential of H. duryi as biological control agent of Schistosome vector snails is discussed.

Variabilité de la compatibilité entre Schistosoma Haematobium et ses hôtes potentiels dans la zone préforestière de Côte d’Ivoire : Implications épidémiologiques

Abstract: Objectif : Caracteriser les populations de Schistosoma Haematobium de la zone preforestiere du centre de la Cote d’Ivoire par le marqueur de compatibilite mollusque-parasite et estimer l’implication des populations de schistosomes dans la divergence epidemiologique de la bilharziose urinaire. Methodologie et resultats : Quatre populations naturelles de S. haematobium ont ete confrontees aux populations de premiere generation de Bulinus globosus (B. globosus) et Bulinus truncatus (B. truncatus) issues de l’aire d’etude. Cinq miracidiums ont servit a infester chaque jeune mollusque. Des combinaisons homopatriques et allopatriques ont ete realisees. La compatibilite mollusque-schistosome et l’implication epidemiologique ont ete appreciees par le taux de reussite a l’infestation (TRI). Au total 2638 Bulinus truncatus et 778 B. globosus ont ete infestes. Trois variantes de S. haematobium infeodees a leurs mollusques hotes ont ete identifiees. Il s’agit des variantes dites « Truncatus », « Globosus » et d’une variante hybride. Les variantes « Truncatus » et « Hybride » sont susceptibles de propager la maladie dans l’aire d’etude et meme au-dela. Conclusion et application des resultats : Notre etude a permis d’apprehender la variabilite genetique naturelle de la compatibilite entre Schistosoma Haematobium et ses hotes potentiels. Ces trois populations de S. haematobium pourraient induire une divergence epidemiologique, elle-meme source de complexite de la lutte contre la bilharziose urinaire. La lutte contre la bilharziose urinaire devra etre envisagee au-dela des localites d’etude et se faire selon les systemes ecoepidemiologiques ecologiques et epidemiologiques.. Au regard de nos resultats, il est recommande des actions de lutte regulieres dans les foyers de grand barrage ou la souche parasitaire semble etre susceptible a toutes les populations de Bulinus truncatus . Mots cles : Schistosoma haematobium, Bulinus globosus, Bulinus truncatus , compatibilite, Cote d’Ivoire Variability of compatibility between Schistosoma Haematobium and its potential hosts in preforest area of Ivory Coast: epidemiological implications Objective : To characterize Schistosoma haematobium’s populations of south-centralarea of Ivory Coast by the compatibility parasite-snail marker and estimate the involvement of schistosome populations in epidemiological divergence of urinary schistosomiasis. Methodology and Results : Four natural populations of S. haematobium were compared with first-generation populations of Bulinus globosus (B. globosus) and Bulinus truncatus (B. truncatus) from the study area. Five miracidia served to infest every young snail. Homopatric and allopatric combinations were performed. The snail-schistosome compatibility and epidemiological involvement were assessed by the success rate of infestation (SRI). In total 2638 B ulinus truncatus and 778 B. globosus were infested. Three variants of S. haematobium subservient to their snail hosts were identified. There are called " Truncatus ", " globosus " variants and a hybrid variant. The "Truncatus" and "hybrid" variants are likely to spread the disease in the study area and even beyond. Conclusion and application of results : This study helped us understand the natural genetic variability of the compatibility between Schistosoma Haematobium and potential hosts.. The fight against urinary schistosomiasis should be considered beyond the study areas. In light of these results, we recommend regular control activities in the large dam from homes where the parasite strain appears to be susceptible to all populations of Bulinus truncatus . Keys words : Schistosoma haematobium, Bulinus globosus, Bulinus truncatus , compatibility, Ivory Coast