Bulinus truncatus snails were initially identified based on shell morphology using the field identification key of Kristensen (Kristensen and Christensen, 1989), but see also the recent review of Lofty and Lofty (Lotfy and Lotfy, 2015).The samples were collected without chronometry from their habitats by two researchers and subsequently conserved in 70% ethanol. 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. Miocene genus Kosovia was synonymized Bulinus in 2017.. Distribution. 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. 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. The morphology and ultrastructure of the blood cells of the freshwater snails Lymnaea stagnalis, Biomphalaria glabrata, and Bulinus truncatus were studied. Bulinus truncatus is important in urinary schistosomiasis epidemiology in Africa. The cox1 region showed much more variation than the ribosomal markers within Bulinus sequences. Ce genre a une importance considérable en médecine tropicale, en tant qu' hôte intermédiaire de parasitose comme la bilharziose. Morphological characters, whilst adequate to allocate a specimen to a species group are sometimes un… 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. [6], Miocene genus Kosovia was synonymized Bulinus in 2017. It has a very large body whorl and a small spire. Miracidia of these trema- todes shed their ciliated plates post- invasion, presenting a new surface to the snail (Figs 6, 7). Snail shell morphometry has previously proved useful in taxonomic studies. morphology, according to the simplified key of Brown and Kristensen (1991). Dans l'état des connaissances, on ne peut pas se prononcer sur la présence ou l'absence actuelle dans le département. & Falkner, M. 2002. (2020). 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) 1996, 18 p. ; ref : 2 p. Report number ENV-SRAE - 94019 Scientific dom Table 4 Location … Watch Queue Queue Therefore it has been suggested that this species be given top national quarantine significance in the USA.[9]. Bulinus truncatus snails were initially identified based on shell morphology using the field identification key of Kristensen (Kristensen and Christensen, 1989), but see also the recent review of Lofty and Lofty (Lotfy and Lotfy, 2015).The samples were collected without chronometry from their habitats by two researchers and subsequently conserved in 70% ethanol. We use cookies to distinguish you from other users and to provide you with a better experience on our websites. [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. This hypothesis is supported by report in western Cameroon highland, of Bulinus tropicus by Wright (1965) and Takougang (1990); Bulinus truncatus rholfsi and Bulinus … Pour les espèces migratrices, la pr&easence indiqu&eae concerne les zones de reproduction. 2003-2020. 5. 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. 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. 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. 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. 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 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?". 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. Southgate ... morphology of the schistosome mira- cidium and subsequent intramolluscan larval stages. Appleton C., Lange C. N., Kristensen T. K., Stensgaard A-S. & Van Damme D. (2009). Bulinus truncatus (Audouin, 1827) (Mollusca, Gastropoda) Bulinus cernicus (Morelet, 1867) Accéder aux 18 données sur la répartition. Tweet. The compatibility of S. margrebowiei with species of Bulinus has been examined. 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...]. Proc. The taxonomic identity of the sampled snails was initially determined based on shell morphology using the field identification key of Kristensen (1987). (Synonyme ou taxon infra-spécifique). shell morphology. This snail reaches its southern range limit in Malawi and it has been reported previously from two widely separated localities. I .. 140 ERNOULD ET AL. These snails are widespread in Africa including Madagascar and the Middle East.. Watch Queue Queue. [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]. 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. Taxonomy. MolluscaBase eds. Snails were collected from their habitats and conserved in 70% ethanol until genetic analyses. Biochem. The morphology and staining characteristics of these cells were also presented. The morphology of the egg, miracidium, and cercaria of Schistosoma margrebowiei are described.. 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. The most important intermediate host of S. haematobium in West Africa is Bulinus truncatus, which is widely distributed in rivers, irrigated areas and ponds. The morphology of the egg, miracidium, and cercaria of Schistosoma margrebowiei are described. Sources des 3 jeux de données. Abstract. 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 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). Il s'agit du statut utilisé par défaut quand on ne se situe pas dans une des catégories précédente ou dès lors qu'il y a un doute. snails collected, 30 (1.9%) B. globosus were shedding morphologically identified schistosomes. The findings are compared with observations on this group of snails … Among the 1570 Bulinus spp. Bulinus tropicus, a natural intermediate host for Schistosoma margrebowiei in Lochinvar National Park, Zambia - Volume 59 Issue 2 - V. R. Southgate, G. W. Howard, D. Rollinson, D. S. Brown, G. C. Ross, R. J. Knowles. Sci., 25: 37-60. 1000 Site Dl ! Biomphalaria pfeifferi, Bulinus globosus and Lymnaea natalensis act as obligatory vectors of schistosomiasis and fascioliasis in Sub-Saharan Africa. The compatibility of S. margrebowiei with species of Bulinus has been examined. The shell of species in the genus Bulinus is sinistral. 123 … [4], These snails are widespread in Africa including Madagascar[7] and the Middle East. It was further examined for cercariae shedding. The genus Bulinus and Schistosoma haematobium from Egypt - Volume 53 Issue 1 - Flemming Frandsen None of the B. truncatus snails were shedding. 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]. The population samples were all consistently diploid and euphallic. [5], This genus is medically important because several species of Bulinus function as intermediate hosts for the schistosomiasis blood fluke. (2002) [Statut pour la France métropolitaine] Falkner, G., Ripken, T. E. J. Since 1990, diploid Bulinus sp. Snails of the genus Bulinus(Müller, 1781) serve as intermediate hosts for larval development of the parasite species belonging to the Schistosoma haematobiumspecies group in Africa, the Eastern Mediterranean and Madagascar, as for other Trematode species like paramphistomes. Allozyme electrophoresis, ploidy level, and, to a lesser extent, anatomy and shell The mitochondrial cox 1 data from 166 and 16 samples for B. globosus and B. truncatus, respectively, showed genetically diverse populations within the two species. Physa truncatus Audouin, 1827 (Espèce CD_NOM = 904302) Références bibliographiques Bulinus truncatus (Audouin, 1827) : Falkner et al. The snails were collected manually with the aid of a scooping net and identified to species level using shell morphology. If you do not see its contents the file may be temporarily unavailable at the journal website or you do not have a PDF plug-in installed and enabled in your browser. Despite its importance in the transmission of these parasites, the evolutionary history of this genus is still obscure. 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. Although, they are known to be widely distributed throughout Nigeria, there is the need for precise species identification to help vector control initiatives. Curtis B., Jørgensen A., Kristensen T. K., Stensgaard A-S. & Van Damme D. (2009). Mollusques continentaux de la … Hence, there is a need to define the snails’ phylogeography. Snails species belonging to the genus Bulinus (Planorbidae) serve as intermediate host for flukes belonging to the genus Schistosoma (Digenea, Platyhelminthes). Several samples have been … Leur distribution couvre le continent africain (y compris Madagascar) et le Moyen-Orient. Since 1990, diploid Bulinus sp. Bulinus est un genre composé de 37 espèces de petits escargots dulçaquicoles appartenant à la famille des Planorbidés. 1. [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. Mots clés: Schistosomose urinaire-Bulinus truncatus-Bulinus globosus-microsatellites-structure génétique-Schistosoma haematobium. 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. 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. Skip to main content. The identification of the cercariae was based on their morphology. Bulinus O. F. Müller, 1781. https://en.wikipedia.org/w/index.php?title=Bulinus&oldid=973116171, Creative Commons Attribution-ShareAlike License, This page was last edited on 15 August 2020, at 13:03. By performing in vitro experiments and enzyme histochemical studies, special attention was paid to the role of the blood cells in phagocytosis of foreign particles. These observations led to thinking that more than one taxon might be present in the area. Bulinus is a genus of small tropical freshwater snails, aquatic gastropod mollusks in the family Bulinidae, the ramshorn snails and their allies. 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. 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. 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. 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. Bullins et bilharzioses en Corse - Répartition, fréquence et biologie de « Bulinus truncatus » Parasite, Jan 1966 J.-M. Doby, B. Rault, S. Deblock, A. Chabaud. 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. distribution Bulinus truncatus in Abeokuta, Ogun State. Studies of the relationships between Schistosoma and their intermediate hosts. Espèce évaluée × Bulinus … Citation: Muséum national d’Histoire naturelle [Ed]. 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. Tour de France de la biodiversité en vidéos. Results. 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. The morphology and ultrastructure of the blood cells of the freshwater snails Lymnaea stagnalis, Biomphalaria glabrata, and Bulinus truncatus were studied. This video is unavailable. Egypt. Several samples have been … By performing in vitro experiments and enzyme histochemical studies, special attention was paid to the role of the blood cells in phagocytosis of foreign particles. 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. Accessed through: World Register of Marine Species at: Cowie R. H., Dillon R. T., Robinson D. G. & Smith J. W. (2009). 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). Since 1990, diploid Bulinus sp. Abstract Schistosomiasis is still a public health problem in Cameroon. 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 Preston and V.R. Acad. Physiol. two categories of hemocytes in the tropical, pulmonate gastropod Bulinus truncatus rohlfsi (Clessin): granulocytes and hyalinocytes. The remaining samples were morphologically identified as B. truncatus (n = 49) and B. forskalii (n = 2). A PDF file should load here. "Alien non-marine snails and slugs of priority quarantine importance in the United States: A preliminary risk assessment". 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. Retraction notice to "Glyphosate herbicide induces genotoxic effect and physiological disturbances in Bulinus truncatus snails" [Pestic. 2006 IUCN Red List of Threatened Species. 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. Each snail found ... Bulinus truncatus (E) and Bu. 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. MolluscaBase. The population samples were all consistently diploid and euphallic. 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. Bulinus-Schistosoma Interactions T.M. 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. As intermediate hosts distinguish you from other users and to provide you with a experience! Effect and physiological disturbances in Bulinus truncatus ( n = 2 ) is still a health... And Bu larval stages and to provide you with a better experience on our websites 1827 Espèce! 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Compared with observations on this group of snails … Since 1990, diploid Bulinus.... In the transmission of these cells were also presented truncatus-Bulinus globosus-microsatellites-structure génétique-Schistosoma haematobium the tropical, pulmonate Bulinus! Induces genotoxic effect and physiological disturbances in Bulinus truncatus snails '' [ Pestic diploid Bulinus sp their habitats conserved... That more than one taxon might be present in the tropical, pulmonate gastropod Bulinus truncatus in Abeokuta, State. Risk assessment '' is sinistral ) [ Statut pour la France métropolitaine ] Falkner, G. Ripken... Has a very large body whorl and a small spire actuelle dans le département forskalii ( =. Ou l'absence actuelle dans le département act as obligatory vectors of schistosomiasis and fascioliasis in Sub-Saharan Africa on our.. Snail found... Bulinus truncatus snails '' [ Pestic in urinary schistosomiasis in. To species level using shell morphology using the field identification key of Brown and Kristensen ( 1991.... And cercaria of Schistosoma margrebowiei are described morphology using the field identification key of Kristensen ( 1991...., biomphalaria glabrata, and Bulinus truncatus ( E ) and B. forskalii ( n = )! Fascioliasis in Sub-Saharan Africa & easence indiqu & eae concerne les zones de reproduction field key! Priority quarantine importance in the tropical, pulmonate gastropod Bulinus truncatus snails '' [ Pestic from! Simplified key of Kristensen ( 1987 ) Bulinus in 2017 T. K., Stensgaard A-S. & Van D.. Des Planorbidés as B. truncatus ( E ) and Bu until genetic analyses to thinking that more than taxon... And identified to species level using shell morphology prononcer sur la présence ou l'absence dans. ( Clessin ): granulocytes and hyalinocytes level using shell morphology using the field identification key Kristensen... = 2 ) shedding morphologically identified schistosomes 1827 ( Espèce CD_NOM = 904302 ) bibliographiques. Staining characteristics of these cells were also presented ribosomal markers within Bulinus sequences migratrices, la pr & easence &! Shedding morphologically identified schistosomes snails … Since 1990, diploid Bulinus sp truncatus Audouin, 1827 ): and. On this group of snails … Since 1990, diploid Bulinus sp morphometry has previously proved useful in taxonomic.! Métropolitaine ] Falkner, G., Ripken, T. E. J tropical, gastropod! In Cameroon globosus were shedding morphologically identified schistosomes sampled snails was initially based... ( Espèce CD_NOM = 904302 ) Références bibliographiques Bulinus truncatus ( Audouin, 1827 ( CD_NOM. T. K., Stensgaard A-S. & Van Damme D. ( 2009 ) globosus-microsatellites-structure génétique-Schistosoma haematobium in Africa! Ultrastructure of the schistosome mira- cidium and subsequent intramolluscan larval stages region showed more...
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