Cyanobacterias
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Efeitos deletérios de microcistina em matrinxã (Brycon cephalus) e tilápia nilótica (Oreochromis niloticus). / Deleterious effects of microcystin on matrinxã (Bryan cephalus) and Nile tilapia (Oreochromis niloticus)
The aim of this study was to evaluate the water quality in fish earthpond with blooms of cyanobacterias and acute toxicity (DL50 - 24 hs) of microcystin in species (Brycon cephalus) and tilapia nilotica (Oreochromis niloticus) as well as histological changes in gills, kidney and liver in fish. Water quality monitoring was carryed out in a pisciculture in Esp
Publicado em: 2010
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2. Synthesis and strategic aplications of some neurotoxins produce for cyanobacteria / Síntese e aplicações estratégicas de algumas neurotoxinas produzidas por cianobactérias
As cianobactérias apresentam distribuição variada e podem ocorrer desde as regiões frias do ártico até os trópicos, em corpos dágua doce e no ambiente marinho. Algumas espécies de cianobactérias produzem compostos com conhecida toxidade, podendo causar efeitos deletérios em seres humanos e animais. Entre estes compostos estão os com atividade neu
Publicado em: 2009
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3. Detecção de Microcystis potencialmente tóxicas em reservatórios de Pernambuco, através de marcadores moleculares para o operon da sintetase da microcistina - mcyB e mcyA.
Cyanobacterias or cyanoficeas, even they have many similarities with eukariotics seaweed and occupy the same ambient niches, they belong to the Eubactéria domain. In Brazil, the occurrence of blooms of cyanobacterias was evidenced, mainly in the state of Pernambuco, where some patients died in 1996. Amongst the cyanobacterias capable of producing toxins, th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/02/2008
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4. Microbiota fóssil em sílex da Formação Assistência (Subgrupo Irati, Permiano, Bacia do Paraná) no Estado de São Paulo / Fossil microbiota in chert from Assistência Formation (Irati Subgroup, Permian, Paraná Basin) in São Paulo State
The study of petrographic thin sections of early diageneteic chert from diverse levels and localities of the Assistência Formation in the state of São Paulo, Brazil, revealed for the first time an exceptionally well-preserved assemblage of delicate fossil microorganisms in this important stratigraphic and paleontological Early Permian marker unit of the Pa
Publicado em: 2008
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5. Relações tróficas e limnológicas no reservatório de Itaipu: uma análise do impacto da biomassa pesqueira nas comunidades planctônicas / Trophic and limnological interactions in the Itaipu reservoir: an analysis of the impact of the fishing biomass in the planktonic communities
Many experimental studies contributed for the development of the theory of the lacustrine food web, disclosing the important paper of the fish, for decades ignored by the limnology. These studies, in its majority, had been developed in Europe and North America and the generality of the hypotheses supporting the theory was not tested yet in subtropical and tr
Publicado em: 2006
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6. Avaliação da toxicidade de florações naturais e de cultura de cianobactérias: efeitos sobre Ceriodaphnia silvestri (Crustacea, Cladocera)
The incidence of toxic cyanobacterial blooms is one of the important consequences of eutrophication in aquatic ecosystems. It is a very common phenomenon in reservoirs and shrimp ponds in the State of Rio Grande do Norte (RN), Brazil. Cyanobacterias produce toxins which can affect aquatic organisms and men trough the food chain. Aiming to contribute to the s
Publicado em: 2006