Mollusc
Mostrando 13-24 de 83 artigos, teses e dissertações.
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13. Phylogenetic analysis of Biomphalaria tenagophila (Orbigny, 1835) (Mollusca: Gastropoda)
Mitochondrial DNA of Biomphalaria tenagophila, a mollusc intermediate host of Schistosoma mansoni in Brazil, was sequenced and characterised. The genome size found for B. tenagophila was 13,722 bp and contained 13 messenger RNAs, 22 transfer RNAs (tRNA) and two ribosomal RNAs (rRNA). In addition to sequencing, the mitochondrial DNA (mtDNA) genome organizatio
Memórias do Instituto Oswaldo Cruz. Publicado em: 2010-07
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14. Preliminary studies investigating the occurrence of Biomphalaria cousini in Brazil
Specific genetic profiles of Brazilian Biomphalaria species were previously standardized by molecular taxonomy through the analysis of restriction fragments, which were generated by digesting the internal transcribed spacer region of rDNA with the DdeI endonuclease. Biomphalaria amazonica displayed three distinct profiles. To investigate these distinct profi
Memórias do Instituto Oswaldo Cruz. Publicado em: 2010-07
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15. The Estrada Real project and endemic diseases: the case of schistosomiasis, geoprocessing and tourism
Geographical Information System (GIS) is a tool that has recently been applied to better understand spatial disease distributions. Using meteorological, social, sanitation, mollusc distribution data and remote sensing variables, this study aimed to further develop the GIS technology by creating a model for the spatial distribution of schistosomiasis and to a
Memórias do Instituto Oswaldo Cruz. Publicado em: 2010-07
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16. Susceptibility of Biomphalaria straminea from Peixe Angical dam, Tocantins, Brazil to infection with three strains of Schistosoma mansoni
Environmental changes from water resource developmental projects affect the epidemiology of water-associated diseases, as well as malaria and schistosomiasis. Aiming to investigate the occurrence and distribution of freshwater snails of medical and veterinary importance in the area of influence of the Peixe Angical hydroelectric dam, a survey has been conduc
Memórias do Instituto Oswaldo Cruz. Publicado em: 2010-07
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17. Morphometric study of a Brazilian strain of Carchesium polypinum (Ciliophora: Peritrichia) attached to Pomacea figulina (Mollusca: Gastropoda), with notes on a high infestation
During an ecological study of the epibiotic relationship between ciliate protists and Pomacea figulina (Spix, 1827) (Gastropoda, Ampullariidae), originating from an urban stream in southeast Brazil, a high infestation by the peritrich ciliate Carchesium polypinum (Linnaeus, 1758) Ehrenberg, 1830 (Ciliophora, Peritrichia) associated to the shell of one mollus
Zoologia (Curitiba). Publicado em: 2010-06
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18. Molluscicidal activity of Hammada scoparia (Pomel) Iljin leaf extracts and the principal alkaloids isolated from them against Galba truncatula
The molluscicidal activity of Hammada scoparia leaf extracts and the principal alkaloids isolated from them (carnegine and N-methylisosalsoline) were tested against the mollusc gastropod, Galba truncatula, the intermediate host of Fasciola hepatica in Tunisia. The results indicated that the molluscicidal activity was correlated with the presence of alkaloids
Memórias do Instituto Oswaldo Cruz. Publicado em: 2009-11
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19. First record of molluscs naturally infected with Angiostrongylus cantonensis (Chen, 1935) (Nematoda: Metastrongylidae) in Brazil
Seeking the identification of Angiostrongylus cantonensis as a potential etiological agent of three clinical cases of eosinophilic meningitis, mollusc specimens were collected in the state of Espírito Santo, Brazil. The snails were identified as Sarasinula marginata (45 specimens), Subulina octona (157), Achatina fulica (45) and Bradybaena similaris (23). L
Memórias do Instituto Oswaldo Cruz. Publicado em: 2007-11
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20. Levantamento da malacofauna limnica e aspectos ecológicos de focos de esquistossomose em Ana Dias, Vale do Ribeira - SP / Malacofauna survey and ecological aspects of schistosomiasis focus in Ana Dias, Vale do Ribeira - SP
Schistosomiasis is one of the oldest parasitic diseases that exist. It is believed that the disease arrived in Brazil with the slave trade, and found favorable conditions to its spreading out. The Vale do Ribeira region is among the main transmission areas in the State of Sao Paulo. The valley is characterized by a hydrographic layout rich in small water vei
Publicado em: 2007
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21. Mitocondrial DNA sequencing of Biomphalaria tenagophila (Orbigny, 1835) (Mollusca: Gastropoda). / Seqüenciamento do DNA mitocondrial de Biomphalaria tenagophila (Orbigny, 1835) (Mollusca: Gastropoda).
With the advent of the automatic sequencing of nucleotides it has been possible in a short period of time to obtain a great amount of information about genomes of different organisms. The mitochondrial DNA sequencing has been considerably increasing in the last years. Just one species of the genus Biomphalaria Biomphalaria glabrata had its mitochondrial geno
Publicado em: 2007
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22. As associações epizóicas de Hydrozoa (Cnidaria: Leptothecata, Anthoathecata e Limnomedusae): I) Estudo faunístico de hidrozoários epizóicos e seus organismos associados; II) Dinâmica de comunidades bentônicas em substratos artificiais em São Sebastião, SP. / The epizoic associations within Hydrozoa (Cnidária: Leptothecata, Anthoatehcata and Limnomedusae): I) Faunistic study of the epizoic hydrozoans and their associated organisms; II) The dinamics of benthic communities on artificial substrates from São Sebastião, SP.
2.1 The associations between animal groups and species of sponges are relatively well known and described in the literature. Of all the cnidarian groups, the most diverse associations with sponges are found among the hydrozoans. In this study, 117 species of epizoic hydroids were found on two classes of sponge substrates (Hexactinellida and Demospongiae). Th
Publicado em: 2007
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23. Susceptibility of Biomphalaria amazonica and Biomphalaria occidentalis from Manso Dam, Mato Grosso, Brazil to infection with three strains of Schistosoma mansoni
As well as malaria and yellow fever, schistosomiasis is one of the main endemic diseases associated to environments which suffered some impact related to the development of great economic projects, as for example the construction of hydroelectric power stations. Aiming to investigate the occurrence and distribution of freshwater snails of medical and veterin
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-10
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24. Common environmental descriptors of two benthic amphi-atlantic mollusc assemblages
Duas associações de moluscos bênticos litorais foram estudadas em ambos os lados do oceano Atlântico, uma tropical no Rio de Janeiro, Brasil, e outra temperada na Galicia, Espanha, procurando-se por descritores ambientais comuns, a ambas, que pudessem explicar, em macro escala, o porquê de essas associações estarem onde estão. As duas associações a
Brazilian Journal of Oceanography. Publicado em: 2006-03