Bulinus est un genre composé de 37 espèces de petits escargots dulçaquicoles appartenant à la famille des Planorbidés. Bulinus truncatus were searched for in 31 water bodies consisting of 19 rivers, 9 streams, 2 dams and 1 canal between October 2008 and March 2009. (2020). 2006 IUCN Red List of Threatened Species. globosus (, I) and infected snails of the same species (I) collected at the transmission sites of the village of Boundoum from March 1994 until February 1995. [6], Miocene genus Kosovia was synonymized Bulinus in 2017. Snail shell morphometry has previously proved useful in taxonomic studies. Retraction notice to "Glyphosate herbicide induces genotoxic effect and physiological disturbances in Bulinus truncatus snails" [Pestic. Miracidia of these trema- todes shed their ciliated plates post- invasion, presenting a new surface to the snail (Figs 6, 7). The morphology and ultrastructure of the blood cells of the freshwater snails Lymnaea stagnalis, Biomphalaria glabrata, and Bulinus truncatus were studied. Allozyme electrophoresis, ploidy level, and, to a lesser extent, anatomy and shell morphology were used to characterize snails of the Bulinus truncatus/tropicus complex in Cameroon. In Bulinus as in other Planorbidae the basic haploid chromosome number is 18 and B. tropicus belongs to a group of diploid forms (2n=36) distributed predominately in southern Africa. Mots clés: Schistosomose urinaire-Bulinus truncatus-Bulinus globosus-microsatellites-structure génétique-Schistosoma haematobium. Since 1990, diploid Bulinus sp. Curtis B., Jørgensen A., Kristensen T. K., Stensgaard A-S. & Van Damme D. (2009). Therefore it has been suggested that this species be given top national quarantine significance in the USA.[9]. Proc. Abstract Schistosomiasis is still a public health problem in Cameroon. Shell Morphology of Three Medical Important Tropical Freshwater Pulmonate Snails from Five Sites in South-Western Nigeria ... Growth and population dynamics of Bulinus truncatus under semi-field conditions in Egypt. For the most part, species have been classified on the basis of their morphology although, in recent decades, the study of ploidy, allozymesand DNA methods have all played an increasing role in species discrimination. MolluscaBase. "Alien non-marine snails and slugs of priority quarantine importance in the United States: A preliminary risk assessment". Snails were collected from their habitats and conserved in 70% ethanol until genetic analyses. This hypothesis is supported by report in western Cameroon highland, of Bulinus tropicus by Wright (1965) and Takougang (1990); Bulinus truncatus rholfsi and Bulinus … The population samples were all consistently diploid and euphallic. Observations were made from April 1963 to March 1964 on the infection rate of Bulinus truncatus in a stream flowing close to a village in Central Iraq, where the children were known to be infected with Schistosoma haematobium. The findings are compared with observations on this group of snails … Several samples have been … [5], This genus is medically important because several species of Bulinus function as intermediate hosts for the schistosomiasis blood fluke. The shell of species in the genus Bulinus is sinistral. Bulinus is a genus of small tropical freshwater snails, aquatic gastropod mollusks in the family Bulinidae, the ramshorn snails and their allies. Leur distribution couvre le continent africain (y compris Madagascar) et le Moyen-Orient. Miocene genus Kosovia was synonymized Bulinus in 2017.. Distribution. Bulinus truncatus is widespread in northern Africa and reaches its southern range limit in Malawi, where it has been reported previously from 2 widely separated localities. Skip to main content. Each snail found ... Bulinus truncatus (E) and Bu. The identification of the cercariae was based on their morphology. une recherche de l'espèce incomplète mais présence de milieux favorables ; une écologie de l'espèce compatible avec l'hypothèse de sa présence ; une dernière observation fiable remontant à plus de 10 ans par rapport à la date de référence, aucune recherche spécifique récente et aucune présomption de disparition depuis cette date [vertébrés, plantes et invertébrés bien étudiés (rhopalocères, orthoptères, odonates...)] ; une dernière observation fiable remontant à plus de 20 ans, aucune recherche spécifique récente et aucune présomption de disparition depuis cette date [taxons peu connus : fonge, nombreux invertébrés...]. [6] For the most part, species have been classified on the basis of their morphology although, in recent decades, the study of ploidy, allozymes and DNA methods have all played an increasing role in species discrimination. Abstract. Species within the genus Bulinus have been placed into four species groups: the Bulinus africanus group, Bulinus forskalii group, Bulinus reticulatus group and the Bulinus truncatus/tropicus complex. Allozyme electrophoresis, ploidy level, and, to a lesser extent, anatomy and shell It was further examined for cercariae shedding. two categories of hemocytes in the tropical, pulmonate gastropod Bulinus truncatus rohlfsi (Clessin): granulocytes and hyalinocytes. The morphology and ultrastructure of the blood cells of the freshwater snails Lymnaea stagnalis, Biomphalaria glabrata, and Bulinus truncatus were studied. Tour de France de la biodiversité en vidéos. Snails species belonging to the genus Bulinus (Planorbidae) serve as intermediate host for flukes belonging to the genus Schistosoma (Digenea, Platyhelminthes). [8], This genus has not yet become established in the USA, but it is considered to represent a potentially serious threat as a pest, an invasive species which could negatively affect agriculture, natural ecosystems, human health or commerce. Sci., 25: 37-60. Bulinus truncatus is important in urinary schistosomiasis epidemiology in Africa. Ce statut se base sur un ou plusieurs des critères suivants : Ce statut doit également être attribué à un département dans lequel la présence de l'espèce est occasionnelle. 5. (Synonyme ou taxon infra-spécifique). The fresh water snail Bulinus truncatus is widespread in northern Africa, where it is an important intermediate host for Schistosoma haematobium, the trematode parasite causing urinary schistosomiasis in man. Dans l'état des connaissances, on ne peut pas se prononcer sur la présence ou l'absence actuelle dans le département. The compatibility of S. margrebowiei with species of Bulinus has been examined. ccording to current taxonomy, the Bulinus truncatus/tropicuscomplex is one of the 4 species groups that are recognized in the genus Bulinus (Brown 1994), and it is comprised of a polyploid series of morphologically almost indistinguishable diploid, tetraploid, hexaploid, and octoploid populations. 2003-2020. High levels of genetic diversity were detected at all loci in the seven studied species, with clear segregation between individuals and appearance of different haplotypes, even within same species from the same locality. Bulinus forskalii, also frequent in the same places, is known as an intermediate host of S. intercalatum in Central Africa and S. bovis in West Africa (Christênsen et al., 1986). Correspond à un signalement sur la base d'au moins une observation avérée dans une période de 10 ans (20 ans pour les invertébrés peu connus) précédant l'année de référence et aucune présomption de disparition depuis l'obtention de la dernière donnée ni doute sur le caractère reproducteur et implanté de cette population. Since 1990, diploid Bulinus sp. 1000 Site Dl ! Studies of the relationships between Schistosoma and their intermediate hosts. Species within the genus Bulinus have been placed into four species groups: the Bulinus africanus group, Bulinus forskalii group, Bulinus reticulatus group and the Bulinus truncatus/tropicus complex. Preston and V.R. (2002) [Statut pour la France métropolitaine] Falkner, G., Ripken, T. E. J. Appleton C., Lange C. N., Kristensen T. K., Stensgaard A-S. & Van Damme D. (2009). This snail reaches its southern range limit in Malawi and it has been reported previously from two widely separated localities. Bulinus truncatus is a species of air-breathing freshwater snail with a sinistral shell, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram 's horn snails. Biomphalaria pfeifferi, Bulinus globosus and Lymnaea natalensis act as obligatory vectors of schistosomiasis and fascioliasis in Sub-Saharan Africa. Morphological characters, whilst adequate to allocate a specimen to a species group are sometimes un… Cas particulier d'absence liée à une disparition avérée depuis moins d'un demi-siècle (les disparitions anciennes sont traitées comme « absence probable ou certaine »). The morphology of the egg, miracidium, and cercaria of Schistosoma margrebowiei are described.. A PDF file should load here. Biochem. Sources des 3 jeux de données. Hence, there is a need to define the snails’ phylogeography. None of the B. truncatus snails were shedding. Bulinus truncatus (Audouin, 1827) (Mollusca, Gastropoda) Bulinus cernicus (Morelet, 1867) Accéder aux 18 données sur la répartition. Watch Queue Queue. These observations led to thinking that more than one taxon might be present in the area. These snails are widespread in Africa including Madagascar and the Middle East.. Bulinus O. F. Müller, 1781. Physiol. A total of 87 infected Bulinus from 24 sites were found, 29 were molecularly confirmed as B. truncatus, three as B. forskalii and four as B. globosus. populations have been reported from many sites in the volcanic western Bamileke and Bamoun plateau in Cameroon; starch gel electrophoresis of enzymes and chromosome analyses have revealed a single band in hydroxybutyrate dehydrogenase (HBDH), isocitrate dehydrogenase (IDH), and a diploid chromosome number of 2n = 36. I .. 140 ERNOULD ET AL. shell morphology. The morphology of the egg, miracidium, and cercaria of Schistosoma margrebowiei are described. "The discovery of Bulinus (Pulmonata: Planorbidae) in a Miocene palaeolake in the Balkan Peninsula", http://www.marinespecies.org/aphia.php?p=taxdetails&id=224352, "Molecular characterization of freshwater snails in the genus Bulinus: A role for barcodes?". Bullins et bilharzioses en Corse - Répartition, fréquence et biologie de « Bulinus truncatus » Parasite, Jan 1966 J.-M. Doby, B. Rault, S. Deblock, A. Chabaud. Citation: Muséum national d’Histoire naturelle [Ed]. Accessed through: World Register of Marine Species at: Cowie R. H., Dillon R. T., Robinson D. G. & Smith J. W. (2009). Our results confirm the existence of 2 evolutionary lineages of the Bulinus truncatus/tropicus species in Lake Albert and underscore the utility of the mitochondrial COI gene in differentiating between sibling species of the B. truncatus/tropicus complex which are otherwise indistinguishable based on the shell morphology Despite its importance in the transmission of these parasites, the evolutionary history of this genus is still obscure. morphology, according to the simplified key of Brown and Kristensen (1991). There are 37[2] (or 38 species when the Bulinus mutandensis is recognized as a separate species) species within the genus Bulinus including: Bulinus truncatus/tropicus complex - 14-15 species, This article incorporates CC-BY-2.5 text from the reference[6]. Tweet. This genus has not yet become established in the USA, but it is considered to represent a potentially serious threat as a pest, an invasive species which could negatively affect agriculture, natural ecosystems, human health or commerce. populations have been reported from many sites in the volcanic western Bamileke and Bamoun plateau in Cameroon; starch gel electrophoresis of enzymes and chromosome analyses have revealed a single band in hydroxybutyrate dehydrogenase (HBDH), isocitrate dehydrogenase (IDH), and a diploid chromosome number of 2n = 36. Egypt. The remaining samples were morphologically identified as B. truncatus (n = 49) and B. forskalii (n = 2). Among the 1570 Bulinus spp. This video is unavailable. Bulinus truncatus is widespread in northern Africa and reaches its southern range limit in Malawi, where it has been reported previously from 2 widely separated localities. Bulinus-Schistosoma Interactions T.M. Today, this entire system is more generally referred to as the Bulinus truncatus/tropicus complex, with B. tropicus representing diploids from South Africa and B. truncatus comprising tetraploids from Egypt (Goldman et al., 1983). snails collected, 30 (1.9%) B. globosus were shedding morphologically identified schistosomes. Results. [6] Morphological characters, whilst adequate to allocate a specimen to a species group are sometimes unreliable when used to classify at higher resolution especially within the Bulinus africanus group.[6]. Freshwater snails collected in central Namibia, south-western Africa, from 15 populations belonging to the Bulinus truncatus/tropicus complex (Planorbidae) are characterised in respect of their chromosome number, morphology, egg proteins and enzymes. Pour les espèces migratrices, la pr&easence indiqu&eae concerne les zones de reproduction. Comparaison of the population structures of Bulinus truncatus (fresh water gasteropods) in natural and anthropized environments : role of the mating systems, parasitism and environmental variations (en) Author Delay, B Ministère de l'environnement, Service de la recherche et des affaires économiques, Paris, France Source. une recherche ciblée intensive mais infructueuse ; une espèce non observée alors que sa présence est facile à détecter ; une présence peu vraisemblable pour des raisons historiques ou biogéographiques. Several samples have been … Ce genre a une importance considérable en médecine tropicale, en tant qu' hôte intermédiaire de parasitose comme la bilharziose. Accéder aux 18 données sur la répartition, Malgré la licence Creative Commons, n'hésitez pas à informer l'auteur de l'utilisation qui sera faite de sa photo, Bulinus contortus (Michaud, 1829) En poursuivant votre navigation sur ce site, vous acceptez l’utilisation de cookies pour vous proposer des contenus et services adaptés et réaliser des statistiques de visites. 1. MolluscaBase eds. The snails were collected manually with the aid of a scooping net and identified to species level using shell morphology. Ce statut se base sur un ou plusieurs des critères suivants : Ce point recouvre l'absence, par nature plus difficile à démontrer que la présence. 123 … Although, they are known to be widely distributed throughout Nigeria, there is the need for precise species identification to help vector control initiatives. distribution Bulinus truncatus in Abeokuta, Ogun State. Snails collected, 30 ( 1.9 % ) B. globosus were shedding morphologically identified as truncatus! 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Truncatus-Bulinus globosus-microsatellites-structure génétique-Schistosoma haematobium diploid Bulinus sp ): Falkner et al africain ( y compris )! % ethanol until genetic analyses ou l'absence actuelle dans le département génétique-Schistosoma haematobium composé de 37 espèces de escargots.