Biomphalaria


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Biomphalaria

(bī-om'fă-lā'rē-ă),
An important genus of freshwater snails (family Planorbidae, subfamily Planorbinae), several species of which serve as intermediate hosts of Schistosoma mansoni in Africa, Saudi Arabia, Yemen, South America, and the Caribbean. Host snails formerly were placed in the genera Australorbis, Tropicorbis, and Taphius but are no longer considered generically distinct.
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The nine studies cover catalytic activity in transcripts from Schistosoma non-autonomous retro-transposons, mobile genetic elements of malaria vectors and other mosquitoes, retro-transposons in the genomes of the digenean parasitic trematodes Clonochis sinensis and Paragonimus westermani, endogenous retro-transposon sequences of the Schistosoma mansoni intermediate snail host Biomphalaria glabrata, the transposon-mediated transgenis of mosquitoes, Schistosome long terminal repeat retro-transposons colonizing Schistosome genomes, Schistosome DNA transposons, and mobile genetic elements resident in hookworm genomes.
Schistosomes causing human disease Schistosoma Intermediate species Geographical area snail host Haematobium Africa, Madagascar, Bulinus Zanzibar, Pemba, Middle East Intercalatum Central and West Africa Bulinus Mansoni Africa, Madagascar, Biomphalaria Gulf of Arabia, Brazil, Venezuela, Suriname, Caribbean Islands Japonicum China, Philippines Oncomelania mainland, Indonesia Mekongi Laos, Cambodia Tricula Egg Egg production characteristics (number/day) Terminal spine 20-200 Terminal spine Unknown Lateral spine 100-300 No spine 500-3 500 No spine Unknown Schistosoma species Location of adult worms Haematobium Terminal venules of the genitourinary system and pelvic plexus Intercalatum Pericolonic plexus Mansoni Pericolonic plexus Japonicum Pericolonic plexus Mekongi Pericolonic plexus
mansoni are endemic are affected by the presence of snails of the genera Biomphalaria and Bulinus, respectively, in infested bodies of water.
Grande also used that information to find similar genes in the left-handed snail Biomphalaria glabrata, the fresh-water host of the parasite that causes schistosomiasis.
Cercariae of an Eygptian strain of S mansoni were obtained from SBSP/TBRI and used for infection immediately after shedding from Biomphalaria alexandrina snails.
The petroleum ether extract of the plant demonstrated molluscicidal activity against Biomphalaria glabrata (Marston 1984).
Polymerase Chain Reaction and Restriction Fragment Length Polymorphism of Cytocrome Oxidase Subunit I Used for differentiation of Brazilian Biomphalaria species intermediate host of Schistosoma mansoni.
Introduction and Spreading of Biomphalaria straminea (Dunker, 1848) (Mollusca: Pulmonata: Planorbidae) in Guadeloupe, French West Indies.
Among many studies, Hoffman showed experimentally in 1927 that (Helisoma) Planorbina guadeloupensis (later denoted as Australorbis glabratus, and now as Biomphalaria glabrata) was the snail intermediate host.