Enteropatógenos bacterianos em peixes criados em uma estação de reciclagem de nutrientes e no ecossistema relacionado

Esposto, Eglaise Miranda; Silva, Wanderson C. P.; Reis, Cristhiane Moura Falavina dos; Reis, Eliane Moura Falavina dos; Ribeiro, Roseli V.; Rodrigues, Dália P.; Lázaro, Norma S.

doi:10.1590/s0100-736x2007000400003

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…However, some of these bacteria are opportunistic and can have the ability to cause disease or death in debilitated or immunosupressed animals. Therefore, these pathogens are important to public health due to the capacity to cause disease in humans and animals, and their monitoring is considered as a relevant tool to prevent diseases (5,7,10,22,23).…”

Section: Resultsmentioning

confidence: 99%

“…These bacteria are associated to a wide range of skin disorders in fishes, including one of the major diseases in aquaculture (furunculosis). In humans, Aeromonas have been increasingly recognized as a relevant etiological agent in gastrointestinal infections, possibly associated to the ingestion of contaminated water or food products (7,8,10).…”

Section: Introductionmentioning

confidence: 99%

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Plesiomonasshigelloides and Aeromonadaceae family pathogens isolated from marine mammals of Southern and Southeastern Brazilian coast

Pereira¹,

Amorim²,

Santos³

et al. 2008

Braz. J. Microbiol.

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The aquatic environment is the habitat of many microorganisms, including Plesiomonas shigelloides and Aeromonas species which are pathogenic to human and animals. In the present investigation, we evaluated the occurrence of these pathogens from marine mammals beached or accidentally captured by fishing net in southeastern (RJ) and southern (RS) coastal Brazilian regions. A total of 198 swabs from 27 specimens of marine mammals, including 11 different species, were collected by DEENSP and GEMARS-CECLIMAR/ UFRGS Institutes and sent to LRNCEB/IOC/FIOCRUZ. The samples were enriched in Alkaline Peptone Water (APW) added with 1% of sodium chloride (NaCl), APW plus 3% NaCl and incubated at 37ºC for 18-24 hours. Following, samples were streaked onto Pseudomonas-Aeromonas Selective Agar Base (GSP Agar) and suspected colonies were biochemically characterized. The results revealed 114 strains, including ten Aeromonas species and P. shigelloides. The main pathogens isolated were A. veronii biogroup veronii (19.3%), A. caviae (12.3%), A. hydrophila (9.6%) and P. shigelloides (7%). The pathogens were isolated in both coastal and offshore marine mammals. These data point the importance of epidemiological surveillance and microbiological monitoring and reinforce the need to implement environmental protection programs, especially related to endangered cetacean species.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Plesiomonasshigelloides and Aeromonadaceae family pathogens isolated from marine mammals of Southern and Southeastern Brazilian coast

Pereira¹,

Amorim²,

Santos³

et al. 2008

Braz. J. Microbiol.

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“…Portanto, o sistema solo-microbiota-planta, presente na lavoura de arroz, pode auxiliar na remoção de poluentes presentes em águas de irrigação da lavoura, contribuindo na depuração das mesmas. Esposto et al (2007) observaram um sistema de reciclagem de nutrientes no Rio de Janeiro, onde os índices de coliformes fecais foram mais baixos nos tanques nos quais havia plantas macrófitas quando comparados aos tanques com criação de peixes. Nebel et al (2007) atribuem ao conjunto de eventos pluviométricos, radiação solar (raios ultravioleta) e zona de oxidação radicular formada pelos aerênquimas das plantas a eliminação de espécies do grupo coliforme.…”

Section: Sua Conversão Em Nutrientes Que São Disponibilizados àS Planunclassified

Bactérias E Bioindicadores De Qualidade De Águas De Ecossistemas Orizícolas Da Região Sul Do Brasil

2010

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A presença de bactérias heterotróficas em ambientes aquáticos, como os agroecossistemas de produção de arroz irrigado, é determinada por processos bióticos e abióticos, onde se destacam os fatores físico-químicos e as interações de elevada complexidade com outros organismos. Nesse trabalho são abordados aspectos relacionados a estas bactérias, tais como: diversidade bacteriana em áreas orizícolas, coliformes totais e termotolerantes como indicadores ambientais. Também são mencionados tópicos relacionados aos wetlands naturais e artificiais, a viabilidade de bactérias entéricas, os impactos, a reutilização e o monitoramento da água nos ecossistemas orizícolas. Palavras-chave: Agroecossistemas; coliformes; qualidade microbiológica. ABSTRACT BACTERIA AND BIOINDICATORS OF THE WATER QUALITY IN IRRIGATED RICE FIELD ECOSYSTEMS IN THE SOUTHERN REGIONS OF BRAZIL.The presence of heterotrophic bacteria in aquatic environments, such as those in the agricultural systems of irrigated rice fields, is determined by biotic and abiotic processes, with the focus on physical-chemical factors and highly complex interactions with other organisms. In this study, we address aspects related to these bacteria, such as: bacterial diversity in rice growing areas, total coliforms and thermotolerant as environmental indicators. Are also mentioned topics related to natural and artificial wetlands, the viability of enteric bacteria, the environmental impacts, reuse and monitoring of water in rice fields ecosystems. Key words: Agroecosystems; coliforms; microbiological quality. RESUMEN BACTERIAS Y BIO-INDICADORES DE LA CALIDAD DE AGUA DE LOS ECOSISTEMAS DE LOS CULTIVOS ARROZ IRRIGADO EN LA REGIÓN SUR DE BRASIL. La presencia de bacteriasheterotróficas en ambientes acuáticos, como los agroecosistemas de producción de arroz irrigado, esta determinada por procesos bióticos y abióticos, en los que destacan factores fisico-químicos e interacciones muy complejas con otros organismos. En este trabajo se discuten algunos aspectos relacionados a estas bacterias, como la diversidad bacteriana en zonas de cultivo de arroz y coliformes totales y termotolerantes considerados como indicadores ambientales. También se discuten tópicos relacionados a humedales naturales y artificiales, a la viabilidad de bacterias entéricas, a los impactos causados y a la reutilización y monitoreo del agua en los ecosistemas de cultivo de arroz.

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Microbiological and physical–chemical water quality of the rice fields in Sinos River’s basin, Southern Brazil

Panizzon

Macedo

Machado

et al. 2012

Environ Monit Assess

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In this study, we evaluate spatial and temporal variations of the water's quality used in rice fields. Every 15 days during the different phases of cultivation of the rice-vegetative, reproductive, and maturity-samples were collected from the main irrigation channel, from the surface water in the field, and from the excess-water drainage channel. The differences in the values of 13 variables were analyzed by the analysis of variance system and by the Principal Component Analysis (PCA) technique. The results demonstrate that the values observed for the presence of total coliforms, heat-tolerant coliforms, and pH were higher in the irrigation water and that the calcium and magnesium components were greater in the drainage water. The PCA results indicate that three groups of variance exist and that these three account for 77 % of the observed variances. The first principal component, (39 % of the variances), includes the variables pH, phosphorus, potassium, carbon, and turbidity; the second (28.1 %), calcium, magnesium, and conductivity; while the third accounts for only 9.9 % of the variation and incorporates the variable biological thermotolerant coliforms. The spatial pattern resulting from the distribution of the sampling locations as regards the first two principal components indicates a difference between the irrigation and drainage waters. The variables of the first and third items (except for the turbidity in the second component) reach higher values in the irrigation water, while the variables associated with the second component have higher values in the drainage water. The information provided is important for the analysis of the influence exercised by plantation management decisions on the microbiological, physical, and chemical quality of the water. The results confirm the ability of paddy rice field to filter out some of the chemicals and coliforms from the irrigation water as it passes through the agro ecosystem.

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Enteropatógenos bacterianos em peixes criados em uma estação de reciclagem de nutrientes e no ecossistema relacionado

Abstract: .] Enteropatógenos bacterianos em peixes criados em uma estação de reciclagem de nutrientes e no ecossistema relacionado. Pesquisa Veterinária Brasileira 27(4): 144-148.

Cited by 5 publications

References 15 publications

Plesiomonasshigelloides and Aeromonadaceae family pathogens isolated from marine mammals of Southern and Southeastern Brazilian coast

Plesiomonasshigelloides and Aeromonadaceae family pathogens isolated from marine mammals of Southern and Southeastern Brazilian coast

Bactérias E Bioindicadores De Qualidade De Águas De Ecossistemas Orizícolas Da Região Sul Do Brasil

Microbiological and physical–chemical water quality of the rice fields in Sinos River’s basin, Southern Brazil

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