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| Registros recuperados: 17 | |
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| PEDALE, A. B.; FUJIMOTO, R. Y.; SANTOS, R. F. B.; ABRUNHOSA, F. A.. |
| The sodium metabisulphite salt is usually used in shrimp culture to prevent black spot. Unfortunately the toxicological effect of this xenobiotic in decapod crabs is unknown. Thus, the present study aims to investigate the sodium metabisulphite LC50?96 h in the mangrove species Ucides cordatus. Crabs were collected in the tidal creek margins in Bragança estuarine and were submitted to preliminary test (screening) and posterior definitive test. Crabs were exposed in five different concentrations and a control group in five replicates, two crabs per recipient (5 L) during 96 hours. A negative correlation was observed to sodium metabisulphite concentration in relation to dissolved oxygen and pH. At the end of the experiment were obtained the following... |
| Tipo: Artigo de periódico |
Palavras-chave: Mangrove crab; Crab.; Caranguejo; Mangue.. |
| Ano: 2012 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/942980 |
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| CUNHA, F. dos S.; SOUSA, N. da C.; SANTOS, R. F. B.; MENESES, J. O.; COUTO, M. V. S. do; SENA FILHO, J. G. de; CARNEIRO, P. C. F.; MARIA, A. N.; FUJIMOTO, R. Y.. |
| Deltamethrin is one of the most commonly used pyrethroids in the world, and it has a high toxic potential, mainly on aquatic organism. Thus, the purpose of this study was to evaluate LC50 values of deltamethrin on tambaqui (Colossoma macropomum) fingerlings and to investigate genotoxic effects and histopathological responses. Fish were exposed to different concentrations of deltamethrin (0, 6.16?×?10?3; 6.44?×?10?2; 1.34?×?10?1, and 1.93?×?10?1 mg L?1) for 96 h. In addition, a genotoxicity analysis was carried out on peripheral blood erythrocytes and histopathological changes were classified by the severity degree of damage and organ functioning. The 96 h LC50 value for tambaqui was estimated at 5.56?×?10?2 mg L?1 using a static test system. Nuclear... |
| Tipo: Artigo de periódico |
Palavras-chave: Deltrametrina; Peixe; Alevino; Tambaqui. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1104881 |
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| SANTOS, R. F. B.; NEVES, M.; SOUSA, N. C.; DIAS, H. M.; COUTO, M. V. S.; MARTINS, M. L.; HONORATO, C. A.; PAIXAO, P. E. G.; FUJIMOTO, R. Y.. |
| This study evaluated the efficacy of formalin and sodium chloride bathing to control leech in freshwater ornamental Peckoltia oligospila loricariid fish through blood parameters. This experiment was conducted by using a completely randomized design in three aspects (control, 250mg/L formalin short bath, and 15g/L NaCl short bath for 15 minutes) and four replicates. Water quality, blood parameters and glucose were evaluated. NaCl showed the best results to control parasites. There was no significant difference related to blood parameters. NaCl treatment promoted parasites control over Peckoltia oligospila without changes in hematological parameters. |
| Tipo: Artigo de periódico |
Palavras-chave: Sanguessuga; Peixe; Peixe Ornamental; Ornamental fish; Fish. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1129162 |
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| NEVES, M. de S.; COUTO, M. V. S.; SOUSA, N. C.; SANTOS, R. F. B.; TAVARES-DIAS, M.; FUJIMOTO, R. Y.. |
| Neste estudo avaliou-se a resposta hematológica dos acaris ornamentais Cochliodon sp. (L145) e Hypostomus sp. (L28) ao estresse de transporte. Foram determinados o eritrograma, leucograma, trombograma, níveis de glicose e proteínas plasmáticas totais (PPT) em 0, 6, 24, 48 e 72 horas após um transporte simulado de 3 horas. Para o perfil hematológico basal o sangue foi coletado imediatamente no local de captura dos peixes sob o mínimo de estresse possível. Cochliodon sp. mostrou redução no número de eritrócitos totais após 6 e 24 horas do estresse de transporte, e aumento da glicose após 6 horas. Em Hypostomus sp. houve hipoglicemia após 6 horas de transporte e ao mesmo tempo aumento do volume corpuscular médio (VCM) pós estresse. Neste estudo observou-se... |
| Tipo: Artigo de periódico |
Palavras-chave: Peixe ornamental; Hematologia. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1061643 |
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| FUJIMOTO, R. Y.; NEVES, M. de S.; SANTOS, R. F. B.; CRUZ, C. da; DINIZ, D. G.; EIRAS, J. da C.. |
| Fish commonly known as acaris or plecos are freshwater armored catfish economically important as a food resource and as ornamental fish. Most of these species are captured in the Amazon region. However, despite its economic importance, there is a lack of knowledge about their biological aspects. Thus, this study aimed to characterize and evaluate the histopathological aspects of important organs as gills, liver, integument and kidney of seven species of armored freshwater ornamental catfish from Guamá River, Pará State, Brazil. All organs showed typical characteristics of organs of other teleosts. In some species, gills and liver showed slight histopathological changes: telangiectasis, edema and morphological changes related to the presence of parasites... |
| Tipo: Artigo de periódico |
Palavras-chave: Qualidade ambiental.; Histologia; Peixe.; Environmental quality; Fish; Histology.. |
| Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1002188 |
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| FUJIMOTO, R. Y.; DIAS, H. M.; SOUSA, N. da C.; COUTO, M. V. S. do; SANTOS, R. F. B.; PAIXAO, P. E. G.; CUNHA, F. dos S.; RAMOS, F. M.; SOUSA, K. N. S.; HOLANDA, F. C.. |
| Ornamental fisheries and socio-economic aspects of fishermen in the major fishing regions in Brazil such as the Xingu River have been well studied. However, there is lack of information about the sustainability of ?satellites? (auxiliary) fishing areas, which contribute towards supplying fish for exportation centers as Belém, the Capital of Pará state-Brazil. The ornamental fishery in the Guamá River basin is an example of an important activity that supports the families along the river, but it has low social returns and its sustainability is consequently in jeopardy without government aid. We collected fish samples and environmental data to evaluate the market chain aspects, fishery tools and techniques, fish handling and environmental issues of the... |
| Tipo: Artigo de periódico |
Palavras-chave: Pesca ornamental; Peixe; Peixe Ornamental; Pesca. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1129136 |
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| NEVES, M. S.; COUTO, M. V. S.; SOUSA, N. C.; SANTOS, R. F. B.; DIAS, H. M.; ABE, H. A.; DIAS, J. A. R.; CUNHA, F. S.; TAVARES-DIAS, M.; FUJIMOTO, R. Y.. |
| O objetivo deste trabalho foi avaliar as respostas hematológicas do acari-bola Peckoltia oligospila submetido ao estresse de transporte. Variações nos parâmetros de sangue foram analisadas às zero, seis, 24, 48, 72 e 96 horas após o transporte. Respostas ao estresse foram observadas entre zero e seis horas do transporte, mas a maioria dos parâmetros retornou aos valores basais em 24 horas. O tempo de zero hora (momento imediato após transporte) foi o mais crítico, com valores elevados de glicemia, eritrócitos e eritroblastos. Respostas secundárias tardias foram observadas para a proteína plasmática total, o volume corpuscular médio (VCM) e a hemoglobina corpuscular média (HCM) em seis horas após o transporte dos peixes, retornando aos valores basais após... |
| Tipo: Artigo de periódico |
Palavras-chave: Peixe endêmico; Fisiologia animal; Sangue; Sanidade animal; Biossegurança. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1086654 |
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| Registros recuperados: 17 | |
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