Fish Kill
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Press Media and Environmental: a study of the coverage of a large fish kill along the Potengi river estuary, Natal-RN / Mídia impressa e meio ambiente: um estudo da cobertura da mortandade de peixes no estuário do Rio Potengi, Natal-RN
A mídia tem evidenciado de forma crescente a questão ambiental, principalmente em situações de desastres. Nessas ocasiões, a imprensa, além de expor a degradação do meio ambiente, revela suas próprias limitações para abordar o tema. A pesquisa buscou dar uma contribuição ao assunto, por meio do estudo da cobertura jornalística realizada pela m�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2011
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2. Zooplankton of an urban coastal lagoon: composition and association with environmental factors and summer fish kill
Zooplankton may be regarded as a sensitive tool for monitoring environmental variations in coastal lagoons due to their ability to immediately react to changes in the water column trophic features and salinity levels. As a coastal lagoon with a broad history of anthropic influence, Rodrigo de Freitas Lagoon (Rio de Janeiro, Brazil) is widely used for water s
Zoologia (Curitiba). Publicado em: 2011-06
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3. A piscicultura como alternativa de desenvolvimento local na região de Dourados MS
This research work includes all requirements stipulated by the concepts offered in the master program, aimed at farming as an alternative for local development in the region of Dourados, MS. The research examines the development of this kind of culture in Mato Grosso do Sul, with clear emphasis on the region of Dourados, where the rates of productivity are t
Publicado em: 2009
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4. Field trials of low dose Bayluscide on snail hosts of schistosome and selected non-target organisms in sahelian Cameroon
More than 85% of all cases of schistosomiasis in Cameroon occur in the northern sahelian half of the country representing 20% of the population. Several workers have advocated the integrated approach to schistosomiasis control, including snail control, but the death and decay of aquatic organisms, and fish kill that often follows Bayluscide application at th
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-06
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5. Efeitos do inseticida organofosforado metil paration (Folisuper 600 BR) sobre biomarcadores do estresse oxidante no teleósteo de água doce matrinxã Brycon cephalus (GUNTER, 1869)
Methyl parathion (MP) is an organophosphorus insecticide worldwide used in agriculture and aquaculture due to its high activity against a broad spectrum of insect pests. It is employed as pesticide in agriculture and in food storage shelters, as well as in fish culture tanks to kill aquatic larval stages of insects. The effect of exposure to 2 ppm of a comme
Publicado em: 2006
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6. Molluscicidal activity of Punica granatum bark and Canna indica root
The molluscicidal activity of Punica granatum Linn. (Punicaceae) and Canna indica Linn. (Cannaceae) against the snail Lymnaea acuminata was studied. The molluscicidal activity of P. granatum bark and C. indica root was found to be both time and dose dependent. The toxicity of P. granatum bark was more pronounced than that of C. indica. The 24 h LC50 of the c
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-11
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7. Antimicrobial Peptides Protect Coho Salmon from Vibrio anguillarum Infections
Fish losses from infectious diseases are a significant problem in aquaculture worldwide. Therefore, we investigated the ability of cationic antimicrobial peptides to protect against infection caused by the fish pathogen Vibrio anguillarum. To identify effective peptides for fish, the MICs of certain antimicrobial peptides against fish pathogens were determin
American Society for Microbiology.
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8. Are Pfiesteria species toxicogenic? Evidence against production of ichthyotoxins by Pfiesteria shumwayae
The estuarine genus Pfiesteria has received considerable attention since it was first identified and proposed to be the causative agent of fish kills along the mid-Atlantic coast in 1992. The presumption has been that the mechanism of fish death is by release of one or more toxins by the dinoflagellate. In this report, we challenge the notion that Pfiesteria
National Academy of Sciences.
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9. Morphology, Physiology, and Serology of a Pasteurella Species Pathogenic for White Perch (Roccus americanus)
The Pasteurella species implicated as the etiologic agent of a massive white perch mortality in the Chesapeake Bay and first described by S. F. Snieszko et al. has been characterized further in our laboratory. The general morphology and physiology of this organism is similar to that of the pasteurellae and several known fish pathogens. There are enough dissi
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10. Heteroduplex mobility assay-guided sequence discovery: Elucidation of the small subunit (18S) rDNA sequences of Pfiesteria piscicida and related dinoflagellates from complex algal culture and environmental sample DNA pools
The newly described heterotrophic estuarine dinoflagellate Pfiesteria piscicida has been linked with fish kills in field and laboratory settings, and with a novel clinical syndrome of impaired cognition and memory disturbance among humans after presumptive toxin exposure. As a result, there is a pressing need to better characterize the organism and these ass
The National Academy of Sciences.
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11. Virulence markers of mesophilic aeromonads: association of the autoagglutination phenomenon with mouse pathogenicity and the presence of a peripheral cell-associated layer.
Autoagglutination (AA phenotype) of mesophilic aeromonads in broth was found to be a virulence-associated marker. There were two kinds of AA+ strains: those that spontaneously pelleted (SP+), and those that pelleted only after boiling (PAB+). Of 79 strains tested, 24 (30%) were AA+, and 18 of these were recovered from clinical specimens. Most of the AA+ stra