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Journal articles on the topic 'Biomphalaria'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 January 2023

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1

Souza, Cecilia Pereira de, Rita de Cássia Palma Cunha, and Zilton A. Andrade. "Development of Schistosoma mansoni in Biomphalaria tenagophila, Biomphalaria straminea and Biomphalaria glabrata." Revista do Instituto de Medicina Tropical de São Paulo 37, no. 3 (June 1995): 201–6. http://dx.doi.org/10.1590/s0036-46651995000300004.

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A comparative study of the development of Schistosoma mansoni during the intra-molluscan phase was made by means of histological sections of Biomphalaria tenagophila, B. straminea and B. glabrata from Brazil. Two hundred snails of each species were individually exposed to 50 miracidia of the S. mansoni, AL line. No larvae were observed in the snails fixed 72 h after exposure. In specimens shedding cercariae, 31 days after exposure tissue reactions encapsulating the larvae were seen in B. tenagophila and B. straminea, in the head-foot, mantle collar and renal ducts. No tissue reactions occurred in the digestive glands of these two species. In B. glabrata the presence of numerous sporocysts and cercariae without tissue reactions was observed in the digestive gland, and other organs. The levels of infection of the snails and the average numbers of cercariae shed per day were 32.6% and 79±90 respectively for B. tenagophila, 11.3% and 112±100 for B. straminea and 75.3% and 432±436 for B. glabrata. The lower levels of infection and average numbers of cercariae shed by B. tenagophila and B. straminea are thus related to their more potent internal defense systems.

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Martins, Renato Tavares, and Roberto da Gama Alves. "Occurrence of Naididae (Annelida: Oligochaeta) from three gastropod species in irrigation fields in southeastern Brazil." Biota Neotropica 8, no. 3 (September 2008): 255–57. http://dx.doi.org/10.1590/s1676-06032008000300023.

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In the present study we report the occurrence of three Naididae species from three gastropod mollusk species. The species Dero (Dero) righii was found from mollusks of the genus Biomphalaria. Nais communis was found from Biomphalaria sp. and Aplexa rivalis. Chaetogaster limnaei was found from Biomphalaria sp., Aplexa rivalis and Lymnaea columella. In Brazil, previous studies have reported the occurrence of Chaetogaster limnaei from Biomphalaria solely, while Nais communis have been found from Pomacea bridgesii and Dero (Dero) righii in the sediment of aquatic habitats in Mato Grosso do Sul. Our results indicate that, due to their locomotion, naidids are capable of colonizing different substrates in aquatic environments.

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Cavalcanti, M. G. S., F. C. Filho, A. M. B. Mendonça, G. R. Duarte, C. C. G. S. Barbosa, C. M. M. B. De Castro, L. C. Alves, and F. A. Brayner. "Morphological characterization of hemocytes from Biomphalaria glabrata and Biomphalaria straminea." Micron 43, no. 2-3 (February 2012): 285–91. http://dx.doi.org/10.1016/j.micron.2011.09.002.

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4

Ovando, Ximena M. C., and Giovanna F. Marchi. "An annotated checklist of Planorbinae (Heterobranchia, Hygrophila, Planorbidae) from northwestern Argentina." Check List 17, no. 6 (November 8, 2021): 1493–507. http://dx.doi.org/10.15560/17.6.1493.

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The family Planorbidae comprises freshwater gastropods with planispiral, spiral and limpet-shaped shells. Subfamily Planorbinae sensu stricto, has a richness of almost 300 species, with some of the main genera being Biomphalaria Preston, 1910 and Drepanotrema Fischer & Crosse, 1880. Some Biomphalaria species are of concern to human health as they are intermediate hosts of blood flukes in Latin America. In Argentina, the family Planorbidae is represented by 15 species in four genera. In Northern Argentina (NOA region), records of the family are scarce, and most of them are a result of occasional collecting. We provide an updated checklist of Planorbinae in NOA resulting from fieldwork, material in malacological collections, and data in the literature. Nine species occur in the area: four species of Biomphalaria and five of Drepanotrema. Among Biomphalaria species, we recorded Biomphalaria straminea (Dunker, 1848), which is considered a natural host of the blood fluke Schistostoma mansoni Sambon, 1907, for first time in Salta province; the known geographic distribution of B. straminea is extended in the country.

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Sodeman Junior, W. A., G. E. Rodrick, W. L. Paraense, and M. Vargas de Gómez. "Biomphalaria straminea and other planorbids in the Dominican Republic." Memórias do Instituto Oswaldo Cruz 80, no. 4 (December 1985): 453–56. http://dx.doi.org/10.1590/s0074-02761985000400012.

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In addition to previous records of Biomphalaria glabrata in the Dominican Republic, the southern central communities of Haina Arriba and Boca Chica, in the National District, are reported as new localities for that species; other species collected were Biomphalaria obstructa, B. helophila, Drepanotrema lucidum and Lymnaea viatrix. Biomphalaria straminea, a potential vector of Schistosoma mansoni, was found for the first time in the country, in the River Iguamo, just outside of the community of San Pedro de Macorís.

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Zuim, Nádia Regina Borim, Eliana Maria Zanotti-Magalhães, Luiz Augusto Magalhães, and Arício Xavier Linhares. "Seleção genética de Biomphalaria glabrata e Biomphalaria tenagophila visando a alteração da suscetibilidade e resistência ao Schistosoma mansoni." Revista da Sociedade Brasileira de Medicina Tropical 38, no. 5 (October 2005): 387–90. http://dx.doi.org/10.1590/s0037-86822005000500004.

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Gerações de Biomphalaria glabrata e Biomphalaria tenagophila selecionadas geneticamente para resistência e suscetibilidade ao Schistosoma mansoni das linhagens BH e SJ foram utilizadas no estudo da adaptação do trematódeo ao hospedeiro intermediário. As gerações dos planorbídeos foram obtidas por autofecundação dos moluscos que se apresentaram suscetíveis ou resistentes após a exposição aos miracídios de Schistosoma mansoni. Para Biomphalaria glabrata foram obtidas as gerações: Parental, F1S (Suscetível), F1R (Resistente), F2S e F2R. Para a Biomphalaria tenagophila foram estudadas as gerações: Parental, F1S, F1R e F50S. A comparação das taxas de infecção apresentadas pelas diferentes gerações mostrou que, em ambas as espécies, o aumento da suscetibilidade foi mais facilmente obtido do que o aumento da resistência. A dificuldade em aumentar a resistência do molusco ao S. mansoni tem fortes implicações epidemiológicas.

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Santos, Mairy Barbosa Loureiro dos, José Rabelo de Freitas, Edirce de Souza Resende Alves, and Luiz Antônio Rocha. "Estratégia competitiva entre Biomphalaria glabrata e Biomphalaria tenagophila: estudos de laboratório." Memórias do Instituto Oswaldo Cruz 84, suppl 1 (1989): 156–78. http://dx.doi.org/10.1590/s0074-02761989000500016.

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8

Favre, Tereza Cristina, Tami Helena Pestana Bogéa, Lúcia Rotenberg, Helen Soares da Silva, and Otávio Sarmento Pieri. "Cercarial emergence of Schistosoma mansoni from Biomphalaria glabrata and Biomphalaria straminea." Memórias do Instituto Oswaldo Cruz 90, no. 5 (October 1995): 565–67. http://dx.doi.org/10.1590/s0074-02761995000500004.

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Tibiriçá, Sandra Helena Cerrato, Adalberto Mitterofhe, Milton Ferreira de Castro, Adilson da Costa Lima, Murilo Gonçalves, Izabella de Oliveira Pinheiro, Corina da Costa Freitas, Ricardo José Paula de Souza e. Guimarães, Omar dos Santos Carvalho, and Elaine Soares Coimbra. "Malacological survey of Biomphalaria snails in municipalities along the Estrada Real in the southeast of the State of Minas Gerais, Brazil." Revista da Sociedade Brasileira de Medicina Tropical 44, no. 2 (March 18, 2011): 163–67. http://dx.doi.org/10.1590/s0037-86822011005000005.

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INTRODUCTION: The increasing practice of ecotourism and rural tourism in the State of Minas Gerais, Brazil, highlights the importance of studies concerning the occurrence of potential intermediate hosts of Schistosoma mansoni. This study aimed to identify species of Biomphalaria snails in municipalities along the Estrada Real, an important Brazilian tourism project. METHODS: The specimens were collected in different water collections of 36 municipalities along the Estrada Real in the southeast of the State of Minas Gerais. Biomphalaria species were characterized using both morphological and molecular approaches. The research was conducted between August 2005 and September 2009 and all the sites visited were georeferenced using GPS. RESULTS: Six Biomphalaria species were found in 30 of the 36 municipalities studied: glabrata, tenagophila, straminea, peregrina, occidentalis and schrammi. The first three species of Biomphalaria, recognized as intermediate hosts of S. mansoni, were present in 33.3%, 47.2% and 8.3% of the municipalities studied, respectively. The mollusks were found in different types of water collections and no infection by S. mansoni was detected. The highest occurrence of Biomphalaria concentration was verified in the area covered by the Caminho Novo route (Diamantina/MG to Rio de Janeiro/RJ). CONCLUSIONS: Considering the occurrence of schistosomiasis in the State of Minas Gerais and the socioeconomic repercussions involved in the Estrada Real Project, this work focuses on the vulnerability of water collections due to the presence of Biomphalaria mollusks and emphasizes the need for epidemiological surveillance and sanitary and educational measures integrated with the local community and tourism sectors.

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Fernandez, Monica Ammon, Silvana Carvalho Thiengo, and Maria Fernanda Boaventura. "Gastrópodes límnicos do Campus de Manguinhos, Fundação Oswaldo Cruz, Rio de Janeiro, RJ." Revista da Sociedade Brasileira de Medicina Tropical 34, no. 3 (June 2001): 279–82. http://dx.doi.org/10.1590/s0037-86822001000300009.

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Um levantamento da malacofauna límnina do Campus de Manguinhos, Fundação Oswaldo Cruz, Rio de Janeiro, foi realizado nos últimos dois anos visando comparar as espécies hoje existentes com aquelas encontradas no início deste século. Foram pesquisadas 18 coleções hídricas numa extensão de 880.000m², sendo encontradas em 13 delas as seguintes espécies: Antillorbis nordestensis, Biomphalaria glabrata, Biomphalaria straminea, Lymnaea columella, Melanoides tuberculatus, Physa cubensis, Pomacea glauca e Pomacea lineata. Destacam-se o desaparecimento de Biomphalaria tenagophila, registrada por Lutz em 1918, a introdução de B. straminea e da espécie asiática M. tuberculatus. Nenhum molusco apresentou infecção por Schistosoma mansoni.

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11

Santos, Mairy Barbosa Loureiro dos, and José Rabelo de Freitas. "Biomphalaria tenagophila feeding behavior." Memórias do Instituto Oswaldo Cruz 82, suppl 4 (1987): 307–9. http://dx.doi.org/10.1590/s0074-02761987000800058.

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12

Raccurt, Christian P., William A. Sodeman, Gary L. Rodrick, and William P. Boyd. "Biomphalaria glabrata in Haiti." Transactions of the Royal Society of Tropical Medicine and Hygiene 79, no. 4 (January 1985): 455–57. http://dx.doi.org/10.1016/0035-9203(85)90063-x.

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13

Flores, Verónica, and Norma Brugni. "Notocotylus biomphalariae n. sp. (Digenea: Notocotylidae)from Biomphalaria peregrina (Gastropoda: Pulmonata) in Patagonia, Argentina." Systematic Parasitology 61, no. 3 (July 2005): 207–14. http://dx.doi.org/10.1007/s11230-005-3166-2.

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14

Tuan, Roseli. "Distribuição e diversidade de espécies do gênero Biomphalaria em microrregiões localizadas no Médio Paranapanema, São Paulo, SP, Brasil." Biota Neotropica 9, no. 1 (March 2009): 279–83. http://dx.doi.org/10.1590/s1676-06032009000100031.

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Foram estudadas a diversidade e a abundância de espécies do gênero Biomphalaria em córregos próximos aos Rios Paranapanema e Pardo (São Paulo, SP, Brasil), em locais antigamente associados à transmissão do Schistosoma mansoni, sujeitos ainda a drásticas variações na disponibilidade de água. Os dados confirmam a predominância de Biomphalaria glabrata (Say, 1818) em córregos do município de Ourinhos, localizados nas margens do Rio Pardo e do Rio Paranapanema. Em Ipauçu, distante 30 km de Ourinhos, a predominância de Biomphalaria tenagophila (Orbigny, 1835) é acompanhada da ausência de B. glabrata. Foram estimados os índices de Diversidade e Dominância de Simpson, que evidenciam uma distribuição variada, provavelmente associada com o substrato aquático onde vivem os caramujos.

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Teodoro, Tatiana Maria, Liana Konovaloff Jannotti-Passos, Omar dos Santos Carvalho, Mario J. Grijalva, Esteban Guilhermo Baús, and Roberta Lima Caldeira. "Hybridism between Biomphalaria cousini and Biomphalaria amazonica and its susceptibility to Schistosoma mansoni." Memórias do Instituto Oswaldo Cruz 106, no. 7 (November 2011): 851–55. http://dx.doi.org/10.1590/s0074-02762011000700011.

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Coelho da Silva, Cesar LPA, Marisa S. Soares, and Magali GM Barreto. "Occurrence of Biomphalaria tenagophila and Disappearance of Biomphalaria straminea in Paracambi, RJ, Brazil." Memórias do Instituto Oswaldo Cruz 92, no. 1 (January 1997): 37–38. http://dx.doi.org/10.1590/s0074-02761997000100008.

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Malagueño, Elizabeth, Cecília Albuquerque, Célia MMB de Castro, Morgana Gadelha, João Inácio Irmão, and José Valfrido Santana. "Effect of Biomphalaria straminea plasma in the phagocytosis of Biomphalaria glabrata hemolymph cells." Memórias do Instituto Oswaldo Cruz 93, suppl 1 (1998): 301–2. http://dx.doi.org/10.1590/s0074-02761998000700059.

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Vaz, Jorge Faria, Horacio Manuel Santana Teles, Santa Poppe da Silva Leite, Maria Auxiliadora Corrêa, Amaury Lellis Dal Fabbro, and Wandercy Santos Rosa. "Levantamento planorbídico do Estado de São Paulo: sexta Região Administrativa." Revista de Saúde Pública 20, no. 5 (October 1986): 352–61. http://dx.doi.org/10.1590/s0034-89101986000500004.

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Com o objetivo de conhecer a distribuição dos planorbídeos na sexta Região Administrativa do Estado de São Paulo, Brasil, com sede na cidade de Ribeirão Preto, foram realizadas, durante sete meses, coletas de moluscos em ambientes hídricos de toda área. Foi verificado que os planorbídeos mais comuns no território, por ordem de freqüência são: Drepanotrema lucidum, Biomphalaria intermedia, Biomphalaria peregrina e Biomphalaria tenagophila. A última espécie ocorre em poucos criadouros mas vem sendo responsabilizada pela transmissão natural da esquistossomose em Bebedouro, desde 1976. B.straminea prolifera em um córrego no município de Serrana e, em uma vala, de Ribeirão Preto. Os dados epidemiológicos e o baixo número de hospedeiros intermediários encontrados levam a crer que a possibilidade da doença disseminar-se pela região é pequena.

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Marchiori, Carlos Henrique. "Primeira ocorrência de Biomphalaria straminea no Sul Goiano, Brasil." Revista de Saúde Pública 33, no. 6 (December 1999): 622–23. http://dx.doi.org/10.1590/s0034-89101999000600014.

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Relata-se a primeira ocorrência do Biomphalaria straminea no Sul do Estado de Goiás, em ambiente natural. Trinta exemplares de Biomphalaria straminea foram coletados em janeiro de 1998, em Cachoeira Dourada de Goiás. Verificou-se que a falta de saneamento e de educação sanitária da população e a presença do caramujo são condições fundamentais para o estabelecimento de um foco de transmissão.

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Santana, José Valfrido de, Yuzuru Iwanaga, Adriana Maria da Silva Telles, Maria Risoleta da Silva, José Felipe Gonçalves, and Seiki Tateno. "Immunoelectrophoretic study on common antigens of São Lourenço da Mata and Belo Horizonte strains of Schistosoma mansoni adult worms and Biomphalaria snails." Revista do Instituto de Medicina Tropical de São Paulo 34, no. 1 (February 1992): 49–54. http://dx.doi.org/10.1590/s0036-46651992000100009.

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Immunoelectrophoretic studies on common antigens were carried out by using rabbits sera immunized against São Lourenço da Mata and Belo Horizonte strains of Schistosoma mansoni adult worms and antigens of Biomphalaria glabrata pigmented (Jaboatão - PE); B. glabrata albino (Belo Horizonte - MG) and B. straminea (São Lourenço da Mata, PE). Furthermore, the reverse approach was proceeded, namely, sera anti Biomphalaria snails produced in rabbits were tested against both strains of Schistosoma adult worm antigens. The analysis of the common antigens between the SLM strains of S. mansoni adult worm and B. glabrata pigmented showed 8 to 9 precipitin bands, 3 bands with B. glabrata albino and only 1 band with B. straminea crude extracts. On the other hand, the BH strain of S. mansoni adult worm antisera produced 6 to 7 bands with B. glabrata pigmented, 5 bands with B. glabrata albino and 1 band with B. straminea antigenic extract. Biomphalaria snails crude extracts were fractionated by Sephadex G-100 column and three fractions were collected from each snail strain. The fractions were tested with anti SLM and BH strains of S. mansoni adult worm sera by immunoelectrophoresis. The common antigens fractionated from Biomphalaria snails crude extracts and those found for both strains of S. mansoni adult worm mostly existed in the first fraction and they were estimated to have molecular weight over 158,000 daltons. In our laboratory, it was found a relationship between the antigenic similarities and experimental infection rates of S. mansoni towards Biomphalaria snails so that more bands were seen with increasing infection rates of S. mansoni.

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Paraense, W. Lobato, and Lygia R. Corrêa. "A potential vector of Schistosoma mansoni in Uruguay." Memórias do Instituto Oswaldo Cruz 84, no. 3 (September 1989): 281–88. http://dx.doi.org/10.1590/s0074-02761989000300001.

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Susceptibily experiments were carried out with a Biomphalaria straminea-like planorbid snail (Biomphalaria aff. straminea, species inquirenda) from Espinillar, near Salto (Uruguay), in the area of the Salto Grande reservoir, exposed individually to 5 miracidia of Schistosoma mansoni (SJ2 and BH2 strains). Of 130 snails exposed to the SJ2 strain, originally infective to Biomphalaria tenagophila, 30 became infected (23%). The prepatent (precercaria) period ranged from 35 to 65 days. The cercarial output was irregular, following no definite pattern, varying from 138 to 76,075 per snail (daily average 4.3 to 447.5 and ending up with death. Three specimens that died, without having shed cercarie, on days 69 (2) and 80 after exposure to miracidia, had developing secondary sporocysts in their tissues, justifying the prospect of a longer precercarial period in these cases. In a control group of 120 B. teangophila, exposed to the SJ2 strain, 40 became infected, showing an infection rate (33.3%) not significantly different from that of the Espinillar snail (X [raised to the power of] 2 = 3.26). No cercarie were produced by any of the Espinilar snails exposed to miracidia of the BH2 strain, originally infective to Biomphalaria glabrata. Four specimens showed each a primary sporocyst in one tentacle, which disappeared between 15 and 25 days post-exposure, and two others died with immature, very slender sporocysts in their tissues on days 36 and 54. In a control group of 100 B. glabrata exposed to BH2 miracidia, 94 shed cercariae (94%) and 6 remained negative. Calculation of Frandsen's (1979a, b) TCP/100 index shows that "Espinillar Biomphalaria-SJ2 S. mansoni" is a vector-parasite "compatible" combination. Seeing that tenagophila-borne schistosomiasis is prevalent in Rio de Janeiro and São Paulo states and has recently spread sothwards to Santa Catarina state, and the range of B. tenagophila overlaps taht of the Espinillar Biomphalaria, the possibility of schistosomiais establishing itself in Uruguay, although not imminent, is not to be disregarded.

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Vidigal, Teofânia Heloísa Dutra Amorim, Kelly Grace Magalhães, and Omar dos Santos Carvalho. "Polymerase chain reaction and restriction fragment length polymorphism analysis of the ITS2 region for differatiation of Brazilian Biomphalaria intermediate hosts of the Schistosoma mansoni." Revista da Sociedade Brasileira de Medicina Tropical 37, no. 4 (August 2004): 351–53. http://dx.doi.org/10.1590/s0037-86822004000400012.

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We sequenced the internal transcribed spacer 2 of the ribosomal DNA (ITS2-DNAr) from the three Schistosoma mansoni intermediate hosts in Brazil: Biomphalaria glabrata, Biomphalaria tenagophila and Biomphalaria straminea. Analysis of a restriction map from those sequences allowed us to select putative restriction enzymes able to identify the snail species under study. Four restriction enzymes were used and HpaII provided simple species-specific profiles easily visualized in polyacrylamide gels. The use of ITS2 is advantageous as it provides a small fragment of 460 bp which may be easily amplified by PCR. In the current work, we showed that the amplification of ITS2-DNAr together with HpaII enzyme restriction is an auxiliary molecular tool for the morphological identification of such snails as well as for taxonomic and phylogenetic studies of neotropical planorbids.

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Bailey, James B., Edward H. Michelson, and W. Lobato Paraense. "Differentiation of the sibling species Biomphalaria occidentalis and Biomphalaria tenagophila by the electrophoretic patterns of their hemoglobin." Memórias do Instituto Oswaldo Cruz 81, no. 3 (September 1986): 319–22. http://dx.doi.org/10.1590/s0074-02761986000300008.

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A simple and rapid method for differentialing the sibling species Biomphalaria tenagophila and Biomphalaria occidentalis by agarose gel electrophoresis (AGE) is described. Snail hemolymph is used as the test sample and the red colaration of the hemoglobin fraction permits visualization of the migration patterns without resorting to specific stains. Moreover, hemolymph samples may be obtained without killing the snail, thus permitting its use for other studies for breeding.

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Teles, Horacio Manuel Santana. "Distribuição geográfica das espécies dos caramujos transmissores de Schistosoma mansoni no Estado de São Paulo." Revista da Sociedade Brasileira de Medicina Tropical 38, no. 5 (October 2005): 426–32. http://dx.doi.org/10.1590/s0037-86822005000500013.

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Os conhecimentos sobre a distribuição geográfica das espécies dos caramujos transmissores de Schistosoma mansoni são importantes para o controle e vigilância epidemiológica da esquistossomose mansônica. O estudo da situação no Estado de São Paulo, Brasil, demandou o exame dos caramujos de 8.771 lotes com amostras do gênero Biomphalaria, preservados em coleção de moluscos da Superintendência de Controle de Endemias. Os exames revelaram espécies dos caramujos transmissores da endemia em 3.712 lotes com 108.244 exemplares. As proporções foram de 225 (6%) lotes de Biomphalaria glabrata (Say, 1818), 3.402 (91,7%) de Biomphalaria tenagophila (d'Orbigny, 1835) e 85 (2,3%) de Biomphalaria straminea (Dunker, 1848), cada espécie respectivamente com 8.002 (7,4%), 88.068 (81,4%) e 12.174 (11,2%) exemplares. A distribuição geográfica de B. glabrata e B. tenagophila apresenta criadouros muito agregados. No caso de B. tenagophila, a maior compactação de criadouros coincide em regiões com elevados níveis de urbanização, muito conurbadas e poluídas. Já B. straminea, encontrada em criadouros das áreas de drenagem de todas as bacias hidrográficas, mostra uma disseminação mais rarefeita. Presume-se que devido às maiores facilidades do contato parasita/hospedeiros, os agregados de criadouros de B. glabrata e B. tenagophila sejam propícios à preservação das áreas endêmicas de S. mansoni em São Paulo.

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Vaz, Jorge Faria, Ezio Mantegazza, Horacio Manuel Santana Teles, Santa Poppe Silva Leite, and Lucia Vieira Camargo Morais. "Levantamento planorbídico do Estado de São Paulo (Brasil): 4ª Região Administrativa." Revista de Saúde Pública 21, no. 5 (October 1987): 371–79. http://dx.doi.org/10.1590/s0034-89101987000500003.

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A fim de conhecer a distribuição dos hospedeiros intermediários de S. mansoni no Estado de São Paulo (Brasil), a Superintendência de Controle de Endemias (SUCEN) procedeu a amplo inquérito malacológico em todos os municípios paulistas que teve a duração de 4 anos. As pesquisas realizadas na 4ª Região Administrativa que tem sede em Sorocaba e que constituem o objeto do presente relato, mostraram que Biomphalaria tenagophila (d'Orbigny, 1835) ocorre em 26 dos 59 municípios nela compreendidos. Biomphalaria glabrata (Say, 1818) é encontrada em 9 municípios e Biomphalaria straminea (Dunker, 1848), em 2. Vários casos de esquistossomose em migrantes já foram observados na área estudada. B. tenagophila parece estar implicada na cadeia natural de transmissão de S. mansoni em Itu e em São Roque, municípios em que foram descobertos os dois únicos casos da doença, até agora considerados como autóctones em toda a região.

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Seta, Luciane de, Luiz Augusto Magalhães, and José Ferreira de Carvalho. "Comportamento dos amebócitos circulantes de moluscos planorbídeos frente ao parasitismo por larvas de Schistosoma mansoni, inoculação de tinta nanquim e fratura da concha." Revista de Saúde Pública 30, no. 4 (August 1996): 332–40. http://dx.doi.org/10.1590/s0034-89101996000400006.

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Foi estudado o comportamento dos amebócitos circulantes de Biomphalaria glabrata e Biomphalaria tenagophila mediante à infecção pelo Schistosoma mansoni, à inoculação de tinta Nanquim e à fratura da concha. Foi realizada contagem diferencial de amebócitos na hemolinfa, dando-se ênfase aos tipos de células encontradas em cada amostra; avaliação histopatológica dos moluscos submetidos à exposição aos miracídios de S. mansoni; e análise da morfologia dos amebócitos através de microscopia de fase. Foi verificada correlação entre a variação do número de amebócitos circulantes e a reação tecidual. Em Biomphalaria tenagophila somente houve aumento do número de amebócitos estrelados quando os moluscos eram infectados por S. mansoni, o que sugere a especificidade da reação ao parasitismo. Comparando os resultados obtidos em B. glabrata e B. teganophila, concluiu-se que esses moluscos apresentam comportamentos amebocitários diferentes frente aos diversos estímulos utilizados.

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PARAENSE, W. LOBATO. "Sperm sharing in Biomphalaria snails." Nature 325, no. 6106 (February 1987): 737. http://dx.doi.org/10.1038/325737b0.

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LEONARD, JANET L., and KEN LUKOWIAK. "Sperm sharing in Biomphalaria snails." Nature 325, no. 6106 (February 1987): 737–38. http://dx.doi.org/10.1038/325737c0.

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MONTEIRO, WARTON. "Sperm sharing in Biomphalaria snails." Nature 325, no. 6106 (February 1987): 738. http://dx.doi.org/10.1038/325738a0.

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Zhou, Youyang, Xiongjun Liu, Ruiwen Wu, Chunhua Zhou, Shan Ouyang, and Xiaoping Wu. "The complete mitochondrial genome of invasive species Biomphalaria straminea (Planorbidae: Biomphalaria) and phylogenetic analysis." Mitochondrial DNA Part B 4, no. 1 (January 2, 2019): 937–38. http://dx.doi.org/10.1080/23802359.2019.1579060.

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Valladares, Vanessa, Célio Pasquini, Silvana Carvalho Thiengo, and Clélia Christina Mello-Silva. "Feasibility of near-infrared spectroscopy for species identification and parasitological diagnosis of freshwater snails of the genus Biomphalaria (Planorbidae)." PLOS ONE 16, no. 11 (November 11, 2021): e0259832. http://dx.doi.org/10.1371/journal.pone.0259832.

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Near Infrared Spectroscopy (NIRS) has been applied in epidemiological surveillance studies of insect vectors of parasitic diseases, such as the Dengue’s mosquitoes. However, regarding mollusks, vectors of important worldwide helminth diseases such as schistosomiasis, fascioliasis and angiostrongyliasis, NIRS studies are rare. This work proposes to establish and standardize the procedure of data collection and analysis using NIRS applied to medical malacology, i.e., to mollusk vectors identifications. Biomphalaria shells and live snails were analyzed regarding several operational aspects, such as: moisture, shell side and position of the live animal for acquisition of NIR spectra. Representative spectra of Biomphalaria shells and live snails were collected using an average of 50 scans per sample and resolution of 16 cm-1. For shells, the sample should first be dried for a minimum of 15 days at an average temperature of 26±1°C, and then placed directly in the equipment measurement window with its left side facing the light beam. Live animals should be dried with absorbent paper; placed into a glass jar, and analyzed similarly to the shells. Once standardized, the technique was applied aiming at two objectives: identification of Biomphalaria using only the shells and parasitological diagnosis for Schistosoma mansoni infection. The discrimination of the three Biomphalaria species intermediate hosts of S. mansoni only by shell has technical limit due to the scarcity of organic material. Nevertheless, it was possible to differentiate B. straminea from B. tenagophila and B. glabrata with 96% accuracy. As for the parasitological diagnosis, it was possible to differentiate infected mollusks shedding S. mansoni cercariae from the non-infected ones with 82, 5% accuracy. In conclusion, the Near Infrared Spectroscopy (NIR’s) technique has proven to be an innovative and sound tool to detect infection by S. mansoni in the different species of Biomphalaria intermediate hosts.

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MTA, Abdel Wareth. "Evaluation of Fentonʼs Reagent Toxicity to Biomphalaria Alexandrina Snails." International Journal of Zoology and Animal Biology 3, no. 1 (2020): 1–5. http://dx.doi.org/10.23880/izab-16000206.

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Fentonʼs reagent is considered a promising disinfecting agent as it has antimicrobial activity. In the present study, effective antifungal Fenton concentrations were investigated on Biomphalaria alexandrina snails as bio indicators of toxicity. Generally, they resulted in low mortality rate of snails, as only 20% mortality was recorded after 60 min of exposure. Also the activities of two antioxidant enzymes; catalase (CAT) and superoxide dismutase (SOD) in snails’ tissues were investigated at different time intervals. Although the activities of both enzymes were different from control group, there was not a pronounced enhancement or inhibition. In conclusion, certain Fenton concentrations can be used as inexpensive and environmentally- friendly disinfecting agents as they are safe on snails which are good bioindicators of toxicity.

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Souza, Marco Antônio Andrade de, Verônica Santos Barbosa, Tereza Neuma Guedes Wanderlei, and Constança Simões Barbosa. "Criadouros de Biomphalaria, temporários e permanentes, em Jaboatão dos Guararapes, PE." Revista da Sociedade Brasileira de Medicina Tropical 41, no. 3 (June 2008): 252–56. http://dx.doi.org/10.1590/s0037-86822008000300006.

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Realizou-se um inquérito malacológico em criadouros, permanentes e temporários, no bairro de Piedade, Jaboatão dos Guararapes, Pernambuco, entre novembro de 2006 e novembro de 2007 com o objetivo de conhecer a fauna malacológica dessa localidade, bem como o potencial de transmissão da esquistossomose mansoni. Além de Biomphalaria glabrata (Say, 1818), foram coletados moluscos Drepanotrema cimex (Moricand, 1837), Pomacea sp e Melanoides tuberculatus (Muller, 1774). Do total de Biomphalaria glabrata coletado, 1.490 exemplares encontraram-se vivos, sendo que 74 (5%) estavam positivos para Schistosoma mansoni. O maior número de moluscos capturados e todos aqueles positivos para Schistosoma mansoni foram coletados na estação anual das chuvas. Foi observada também a presença de outras larvas de trematódeos infectando os moluscos Biomphalaria glabrata. Pertencentes às famílias Strigeidae e Diplostomatidae, apresentam, a primeira vista, morfologia que pode levar a confusão com as cercárias do Schistosoma mansoni, tornando-se indispensável seu conhecimento para o diagnóstico diferencial do agente causador da esquistossomose.

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Teles, Horacio Manuel Santana, Roberto Mitsuyoshi Hiramoto, João Carlos Nascimento de Oliveira, and José Antônio de Aveiro. "Ocorrência de vetores da esquistossomose mansônica no litoral norte do Estado de São Paulo, Brasil." Cadernos de Saúde Pública 19, no. 6 (December 2003): 1887–91. http://dx.doi.org/10.1590/s0102-311x2003000600034.

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Seguem detalhes da descoberta de exemplares de Biomphalaria tenagophila (d’Orbigny, 1835,) infectados por Schistosoma mansoni Sambon, 1907, em Caraguatatuba, e da introdução de Biomphalaria straminea (Dunker, 1848) em Ilha Bela, dois municípios da Região do Litoral Norte do território paulista. O novo foco da esquistossomose situa-se no Bairro Olaria; a presença de B. straminea foi detectada em um córrego da localidade de Barra Velha, juntamente com B. tenagophila. Esses registros motivaram a discussão dos riscos da expansão da esquistossomose, em conseqüência das más condições do saneamento básico predominantes na região.

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Leite, M. G. P., E. C. Pimenta, M. A. G. Fujaco, and E. M. Eskinazi-Sant'Anna. "Irrigation canals in Melo creek basin (Rio Espera and Capela Nova municipalities, Minas Gerais, Brazil): habitats to Biomphalaria (Gastropoda: Planorbidae) and potential spread of schistosomiasis." Brazilian Journal of Biology 76, no. 3 (April 19, 2016): 638–44. http://dx.doi.org/10.1590/1519-6984.22714.

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Abstract This study analyzed the presence of Biomphalaria in Melo creek basin, Minas Gerais state, and its relationship to irrigation canals. Seventeen of these canals were used to determine a limnological, morphological and hydrological characterization during an annual seasonal cycle. Biomphalaria samples were sent to René Rachou Research Center/FIOCRUZ for identification and parasitological examination. Six canals were identified as breeding areas for mollusks and in one of them it was registered the coexistence of B. tenagophila (first report to this basin) and B. glabrata species. Results indicated that the low flow rate and speed of water flow were the main characteristics that contributed to this specific growth of the mollusks in the area. These hydraulic characteristics were created due to anthropogenic action through the canalization of lotic areas in Melo creek, which allowed ideal ecological conditions to Biomphalaria outbreak. The results emphasize the need of adequate handling and constant monitoring of the hydrographic basin, subject to inadequate phytosanitary conditions, aiming to prevent the occurrence and propagation of schistosomiasis.

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Barros Gomes, Paulo Roberto, Jonas Batista Reis, Romer Pêssoa Fernandes, Victor Elias Mouchrek Filho, Antônio Gouveia de Souza, Maria Alves Fontenele, and Jeremias Caetano da Silva. "Toxicidad y actividad molusccidal del aceite esencial Pimenta dioica contra el caracol Biomphalaria glabrata." Revista peruana de Biología 26, no. 1 (March 30, 2019): 101–8. http://dx.doi.org/10.15381/rpb.v26i1.15913.

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Este trabajo evaluó la toxicidad y el efecto molusquicida del aceite extraído de las hojas de Pimenta dioica contra el caracol Biomphalaria glabrata (Say, 1818). Para esto, el aceite esencial se extrajo cuantitativamente por hidrodestilación. Luego se realizaron cuantificaciones de sus componentes mediante cromatografía de gases acoplada a espectrometría de masas (CG-MS) y se analizaron la toxicidad y la actividad molusquicida, respectivamente, contra Artemia salina y los caracoles Biomphalaria glabrata(Say, 1818). La concentración letal (CL50) se calculó a partir de los métodos de Reed-Muench y Pizzi, respectivamente, para pruebas de toxicidad y molusquicidas. Los resultados del análisis cromatográfico mostraron que el aceite contiene un 85,67% de eugenol (constituyente principal) y un 0.88% de linalool (componente secundario). En la evaluación de toxicidad, el aceite se consideró altamente tóxico con una CL50 de 14.13 mg∙L-1, en un intervalo de confianza del 95%, mientras que la actividad molusquicida presentó una concentración letal (CL50) de 18.62. mg∙L-1 en un intervalo de confianza del 95%. Por lo tanto, el aceite es activo contra el caracol Biomphalaria glabrata.

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Barrros Gomes, Paulo Roberto, Jonas Batista Reis, Jeremias Caetano da Silva, Rayone Wesly Santos de Oliveira, Maria Do Livramento de Paula, Hilton Costa Louzeiro, Victor Elias Moucherek Filho, and Maria Alves Fontenele. "Avaliação da toxicidade e atividade moluscicida do óleo essencial Cinnamomum zeylanicum Blume contra o caramujo Biomphalaria glabrata (Say, 1818)." Revista Colombiana de Ciencias Químico-Farmacéuticas 48, no. 1 (January 1, 2019): 122–27. http://dx.doi.org/10.15446/rcciquifa.v48n1.80069.

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Este trabalho determina a toxicidade e o efeito moluscicida do óleo extraído das folhas de Cinnamomum zeylanicum Blume contra o caramujo Biomphalaria glabrata (Say, 1818). Para isso, o óleo essencial foi extraído quantitativamente por hidrodestilação. Em seguida, quantificações de seus componentes foram realizadas por cromatografia gasosa acoplada a espectrometria de massas (CG-MS) e a toxicidade e atividade moluscicida do óleo foram testadas, respectivamente, contra Artemia salina e caramujos Biomphalaria glabrata (Say, 1818). A concentração letal (CL50) foi calculada a partir dos métodos Reed-Muench & Pizzi, respectivamente, para toxicidade e teste moluscicida. Os resultados das análises cromatográficas mostraram que o óleo possui 83% de eugenol (constituinte majoritário) e 2,5% de humuleno (componente minoritário). Na avaliação de toxicidade, o óleo foi considerado moderadamente tóxico com uma CL50 de 162,1 mg.L-1 ± 2,80, com intervalo de confiança de 95%, enquanto a atividade moluscicida apresentou concentração letal de 50% (CL50) de 18,62 mg.L-1 ± 2,18, com intervalo de confiança de 95%. Portanto, o óleo é ativo contra o caramujo Biomphalaria glabrata.

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Paraense, W. Lobato. "Biomphalaria subprona (Martens, 1899) (Gastropoda: Planorbidae)." Memórias do Instituto Oswaldo Cruz 91, no. 2 (April 1996): 187–90. http://dx.doi.org/10.1590/s0074-02761996000200011.

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Spatz, Linus, Teofânia HDA Vidigal, Roberta L. Caldeira, Emmanuel Dias Neto, Stella Maris González Cappa, and Omar S. Carvalho. "Molecular study of similar Biomphalaria species." Memórias do Instituto Oswaldo Cruz 93, suppl 1 (1998): 169–70. http://dx.doi.org/10.1590/s0074-02761998000700025.

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Abou-El-Naga, Iman F., Suzanne M. F. El-Nassery, Sonia R. Allam, Eman A. Shaat, and Rasha F. M. Mady. "Biomphalaria species in Alexandria water channels." Parasitology International 60, no. 3 (September 2011): 247–54. http://dx.doi.org/10.1016/j.parint.2011.03.006.

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Raghavan, Nithya, and Matty Knight. "The snail (Biomphalaria glabrata) genome project." Trends in Parasitology 22, no. 4 (April 2006): 148–51. http://dx.doi.org/10.1016/j.pt.2006.02.008.

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Teles, Horacio Manuel Santana, and Cristiano Correa de Azevedo Marques. "Estivação de Biomphalaria tenagophila (Pulmonata, Planorbidae)." Revista de Saúde Pública 23, no. 1 (February 1989): 76–78. http://dx.doi.org/10.1590/s0034-89101989000100010.

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É relatado o encontro de Biomphalaria tenagophila estivada, em dois municípios do Estado de São Paulo (Brasil): Ubatuba e Conchas. Essa característica etológica foi percebida em 15 exemplares coletados em Ubatuba e 6 em Conchas. Os caramujos estavam enterrados em fendas do solo ressecado,e, em laboratório, voltaram a exibir vitalidade depois de colocados em água.

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Castillo, Maria G., Judith E. Humphries, Marina M. Mourão, Joshua Marquez, Adrian Gonzalez, and Cesar E. Montelongo. "Biomphalaria glabrata immunity: Post-genome advances." Developmental & Comparative Immunology 104 (March 2020): 103557. http://dx.doi.org/10.1016/j.dci.2019.103557.

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44

Jung, Younghun, Thomas S. Nowak, Si-Ming Zhang, Lynn A. Hertel, Eric S. Loker, and Coen M. Adema. "Manganese superoxide dismutase from Biomphalaria glabrata." Journal of Invertebrate Pathology 90, no. 1 (September 2005): 59–63. http://dx.doi.org/10.1016/j.jip.2005.06.014.

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45

Espídola, Karen Schmidt, Maria Marques Machado, and Paulo Roberto Petersen Hofmann. "Natural and experimental infection of planorbids from the Island of Santa Catarina (Brazil)." Revista do Instituto de Medicina Tropical de São Paulo 34, no. 4 (August 1992): 289–94. http://dx.doi.org/10.1590/s0036-46651992000400004.

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Studies on eight localities on the Island of Santa Catarina revealed the presence of three species of the molluscan family Planorbidae: Biomphalaria tenagophila, Drepanotrema cimex and Biomphalaria oligoza, the first one being naturally infected by Cercaria ocellifera, a furcocercaria with morphological characteristics of Cercaria caratinguensis, and by an unknown furcocercaria. Drepanotrema cimex was infected by a furcocercaria with characteristics of C. caratinguensis and by C. macrogranulosa. No natural infection was found in B. oligoza. B. tenagophila showed no susceptibility to the experimental infection by the BH-MG strain of Schistosoma mansoni from Belo Horizonte and maintained at laboratory in B. glabrata snails.

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46

Souza, Cecília Pereira de, Carlos Tito Guimarães, Neusa Araújo, and Carlos Rubens Teixeira da Silva. "Resistência de Biomphalaria schrammi de Arcos, Minas Gerais, Brasil, à infecção com duas cepas de schistosoma mansoni." Memórias do Instituto Oswaldo Cruz 80, no. 1 (March 1985): 51–53. http://dx.doi.org/10.1590/s0074-02761985000100008.

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Descendentes do plonorbídeo Biomphalaria schrammi Crosse, 1864, coletados na localidade de Calciolândia, município de Arcos, Minas Gerais, Brasil foram expostos a miracídios de duas cepas de Schistosoma mansoni:"LE" de Belo Horizonte, Minas Gerais e "SJ" de São José dos Campos, São Paulo, Brasil. Dentre 172 exemplares expostos, nenhum se infectou com as duas cepas deste trematôdeo. Por outro lado, 100 exemplares de Biomphalaria glabrata, dos grupos controle, apresentaram taxas de infecção de 88 e 40% com as cepas "LE" e "SJ", respectivamente. A taxa de mortalidade de B. schrammi chegou a 44% enquanto a de B. glabara não atingiu 10%.

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47

Coimbra Júnior, Carlos E. A., and Ricardo Ventura Santos. "Moluscos aquáticos do Estado de Rondônia (Brasil), com especial referência ao gênero Biomphalaria Preston, 1910 (Pulmonata, Planorbidae)." Revista de Saúde Pública 20, no. 3 (June 1986): 227–34. http://dx.doi.org/10.1590/s0034-89101986000300006.

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Foi realizado no Estado de Rondônia, Brasil, levantamento malacológico com o objetivo de estabelecer a distribuição geográfica dos moluscos aquáticos, com ênfase especial no gênero Biomphalaria. Foram pesquisados 11 municípios ao longo da rodovia BR-364, totalizando 162 ecossistemas límnicos, dos quais 77 (48%) apresentaram-se positivos para, pelo menos, uma espécie de molusco. As seguintes espécies foram encotradas: Gastropoda, Planorbidae: Biomphalaria sp., B.amazônica, B.occidentalis, Drepanotrema cimex, D.anatinum, D.lucidum e D.depressissimum; Physidae: Stenophysa marmorata; Ancylidae: Gundlachia sp.; Thiaridae: Aylacostoma sp.; Ampullaridae: Pomacea sp.; Pelecypoda, Sphaeriidae: Eupera primei e Pisidium sp. São apresentados dados de distribuição geográfica e discutida a importância epidemiológica dos achados.

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Pires, Edina Rodrigues, Teofânia HDA Vidigal, Horácio MS Teles, Andrew JG Simpson, and Omar S. Carvalho. "Specific Identification of Biomphalaria tenagophila and Biomphalaria occidentalis Populations by the Low Stringency Polymerase Chain Reaction." Memórias do Instituto Oswaldo Cruz 92, no. 1 (January 1997): 101–6. http://dx.doi.org/10.1590/s0074-02761997000100021.

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Lima, Mariana G., Vinícius M. Tunholi-Alves, Tatiane Cristina S. Bonfim, Fabrício N. Gaudêncio, Juberlan S. Garcia, Arnaldo Maldonado, Jairo Pinheiro, and Silvana C. Thiengo. "Effects of experimental Angiostrongylus cantonensis infection on the reproductive biology of Biomphalaria straminea and Biomphalaria tenagophila." Journal of Invertebrate Pathology 149 (October 2017): 106–13. http://dx.doi.org/10.1016/j.jip.2017.08.006.

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MORGAN, J. A. T., R. J. DEJONG, S. D. SNYDER, G. M. MKOJI, and E. S. LOKER. "Schistosoma mansoni and Biomphalaria: past history and future trends." Parasitology 123, no. 7 (November 2001): 211–28. http://dx.doi.org/10.1017/s0031182001007703.

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Schistosoma mansoni is one of the most abundant infectious agents of humankind. Its widespread distribution is permitted by the broad geographic range of susceptible species of the freshwater snail genus Biomphalaria that serve as obligatory hosts for its larval stages. Molecular phylogenetic studies suggest that Schistosoma originated in Asia, and that a pulmonate-transmitted progenitor colonized Africa and gave rise to both terminal-spined and lateral-spined egg species groups, the latter containing S. mansoni. Schistosoma mansoni likely appeared only after the trans-Atlantic dispersal of Biomphalaria from the Neotropics to Africa, an event that, based on the present African fossil record, occurred only 2–5 million years ago. This parasite became abundant in tropical Africa and then entered the New World with the slave trade. It prospered in the Neotropics because a remarkably susceptible and productive host, B. glabrata, was widely distributed there. Indeed, a snail similar to B. glabrata may have given rise to the African species of Biomphalaria. Schistosoma mansoni has since spread into other Neotropical Biomphalaria species and mammalian hosts. The distribution of S. mansoni is in a state of flux. In Egypt, S. mansoni has nearly completely replaced S. haematobium in the Nile Delta, and has spread to other regions of the country. A susceptible host snail, B. straminea, has been introduced into Asia and there is evidence of S. mansoni transmission in Nepal. Dam and barrage construction has lead to an epidemic of S. mansoni in Senegal, and the parasite continues its spread in Brazil. Because of competition with introduced aquatic species and environmental changes, B. glabrata and consequently S. mansoni have become less abundant on the Caribbean islands. Control of S. mansoni using praziquantel and oxamniquine has reduced global prevalence but control is difficult to sustain, and S. mansoni can develop tolerance/resistance to praziquantel, raising concerns about its future efficacy. Because of legitimate environmental concerns, snail control is unlikely to be an option in future control efforts. Global warming will impact the distribution of Biomphalaria and S. mansoni, but the magnitude and nature of the effects are poorly understood.

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