Molluscs
Mostrando 13-24 de 100 artigos, teses e dissertações.
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13. Marcadores orgânicos moleculares como ferramentas no monitoramento ambiental: Avaliação da distribuição de Alquilbenzeno Lineares (LABs) em organismos e sedimentos, como indicativo de exposição ao esgoto em áreas costeiras / Organic molecular markers as tools in environmental monitoring: Evaluation of Linear Alkylbenzene (LABs) distribution in organisms and sediments, as indicative of exposure to sewage in coastal areas
The sewage disposal in coastal areas can cause impacts to marine life, altering the balance of the ecosystem and biodiversity and causing serious diseases in humans. In this study, the concentration of a set of molecular markers for the introduction of organic sewage into the marine environment: linear alkylbenzene (LAB), in samples of sediment, oysters (Cra
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/04/2012
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14. Angiostrongylus cantonensis (Nematode: Metastrongyloidea) in molluscs from harbour areas in Brazil
Angiostrongylus cantonensis is the most common aetiological agent of human eosinophilic meningoencephalitis. Following a report indicating the presence of this parasite in Brazil in 2007, the present study was undertaken to investigate the presence of A. cantonensis in the surrounding Brazilian port areas. In total, 30 ports were investigated and the followi
Mem. Inst. Oswaldo Cruz. Publicado em: 2012-09
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15. The significance of the amoebocyte-producing organ in Biomphalaria glabrata
In molluscs, internal defence against microorganisms is performed by a single cell type, i.e., the haemocyte or amoebocyte. The origin of these cells in Biomphalaria glabrata was initially thought to be localised within the vasculo-connective tissue. More recently, origin from a single organ, termed the amoebocyte-producing organ (APO), has been postulated b
Memórias do Instituto Oswaldo Cruz. Publicado em: 2012-08
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16. Assinaturas tafonômicas em bibalves marinhos recentes na costa do Brasil e seu significado paleoambiental.
Restos de moluscos acumulados na superfície do sedimento marinho (i.e., assembleias mortas, retrabalhadas ou não) podem ser os principais testemunhos do efeito de fatores ambientais (oceanográficos, sedimentares, climáticos) sobre o modo como os moluscos fósseis são preservados. Ou seja, o quanto o meio ambiente é responsável pela fossilização de r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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17. Moluscos associados à macroalga Pterocladiella caerulescens (Rhodophyta, Pterocladiaceae) na zona entremarÃs da Praia da Pedra Rachada, Paracuru, CearÃ, Nordeste do Brasil / Molluscs associated with macroalgae Pterocladiella caerulescens (Rhodophyta, Pterocladiaceae) in the intertidal zone of Praia da Pedra Rachada, Paracuru, CearÃ, Northeastern Brazil
Macroalgas marinhas sÃo habitadas por uma sÃrie de animais vÃgeis, incluindo moluscos, constituindo uma comunidade fital dinÃmica. Para se compreender essa comunidade, deve-se considerar, entre outros fatores, a complexidade do habitat. Alguns indicadores dessa complexidade seriam biomassa e volume algais. Acredita-se que um aumento estrutural da alga re
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/01/2011
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18. The influence of thymol+DMSO on survival, growth and reproduction of Bradybaena similaris (Mollusca: Bradybaenidae)
Bradybaena similaris (Férussac, 1821), commonly known as the Asian trampsnail, is a terrestrial snail native to Asia, introduced in other regions of the world. In Brazil, populations of this land snail are distributed from the state of Amapá in the North to Rio Grande do Sul in the South. This species acts as an intermediate host for parasites and is a dif
Zoologia (Curitiba). Publicado em: 2011-04
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19. Efeitos de moluscicidas e poluentes ambientais sobre a reproducao e o desenvolvimento de caramujos aquaticos.
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Planaltina: Embrapa Cerrados. Publicado em: 2011
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20. Alimentação de Potamotrygon signata e Potamotrygon orbignyi (Chondrichthyes: potamotrygonidae) na bacia do rio Parnaíba.
The evaluation of this diet, based on stomach content analisys, has already became rutine practice in fish ecology studies. The family Potamotrygonidae, represented by all Neotropical fresh water sting rays, is considered the only eslamobranch family whose members are totally restricted and adapted to this enviroment. The samples were obtained in the months
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/08/2010
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21. DistribuiÃÃo da malacofauna em pilares dos terminais portuÃrios de Cearà - Brasil, com Ãnfase no bivalve invasor Isognomon Bicolor / Distribution of mollusc pillars of the port terminals of Cearà - Brazil, with emphasis on bivalve invader Isognomon Bicolor
Terminais portuÃrios adicionam estruturas artificiais ao ambiente marinho propiciando o estabelecimento de organismos epibÃnticos nativos e espÃcies exÃticas devido à intensa circulaÃÃo de navios. O presente estudo caracterizou e comparou a composiÃÃo especÃfica e a distribuiÃÃo batimÃtrica da malacofauna associada aos pilares dos terminais port
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/05/2010
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22. First report of Angiostrongylus cantonensis (Nematoda: Metastrongylidae) in Achatina fulica (Mollusca: Gastropoda) from Southeast and South Brazil
The rat lungworm Angiostrongylus cantonensis is a worldwide-distributed zoonotic nematode that can cause human eosinophilic meningoencephalitis. Here, for the first time, we report the isolation of A. cantonensis from Achatina fulica from two Brazilian states: Rio de Janeiro (specifically the municipalities of Barra do Piraí, situated at the Paraiba River V
Memórias do Instituto Oswaldo Cruz. Publicado em: 2010-11
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23. 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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24. 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