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| RIBEIRO, S. C.; MALHEIROS, D. F.; GUILOZKI, I. C.; MAJOLO, C.; CHAVES, F. C. M.; CHAGAS, E. C.; ASSIS, H. C. S. de; TAVARES-DIAS, M.; YOSHIOKA, E. T. O.. |
| Immunostimulants in farmed fish diets has been considered an effective approach to health management. This study aimed to assess antioxidant effects and resistance against pathogens of Colossoma macropomum (tambaqui) fed essential oil (EO) of M. piperita at 0%, 0.5%, 1.0% and 1.5% kg−1 commercial feed during 30 days. Tambaqui were challenged with Aeromonas hydrophila and did not present clinical signs of alterations. Higher hepatic catalase activity was observed in fish fed 1.0% of M. piperita EO, compared with 1.5%. Renal superoxide dismutase and glutathione peroxidase decreased in the fish fed M. piperita EO. Hepatic and renal lipid hydroperoxide increased among fish fed diets with 1.0 and 1.5% of EO. Tambaqui fed 1.0% of M. piperita EO showed... |
| Tipo: Artigo de periódico |
Palavras-chave: Aromatic plant.; Peixe de água doce; Consumo alimentar; Reação quimica; Toxidez; Parasito de animal; Planta aromática; Glóbulo branco; Freshwater fish; Food consumption; Toxicity; Chemical reactions; Leukocytes.; Animal parasites and pests. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088207 |
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| SILVA, C. A. da; OBA, E. T.; RAMSDORF, W. A.; MAGALHÃES, V. F.; CESTARI, M. M.; RIBEIRO, C. A. O.; ASSIS, H. C. S. de. |
| Cyanobacterial waterblooms, such as the saxitoxin (STX) producer Cylindrospermopsis raciborskii, have been a worldwide concern in environmental health. However, the bioaccumulation of this neurotoxin in the trophic chain is not completely known. The aim of the present work was to evaluate STX bioaccumulation through chemical analyses and the toxic and trophic effects using biomarkers in the tropical freshwater fish Hoplias malabaricus. They were fed once every five days with Astyanax sp. before being subjected to intraperitoneal inoculation with STX extract (0.08 mg/100 g) obtained by lysis of toxic C. raciborskii strain (T3). After 20 days the brain was collected for acetylcholinesterase (AChE), superoxide dismutase (SOD), catalase (CAT), glutathione... |
| Tipo: Artigo de periódico |
Palavras-chave: Peixe de água doce; Traíra; Toxina. |
| Ano: 2011 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/901961 |
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| ASSIS, H. C. S. de; SILVA, C. A. da; OBA, E. T.; PAMPLONA, J. H.; MELA, M.; DORIA, H. B.; GUILOSKI, I. C.; RAMSDORF, W.; CESTARI, M. M.. |
| The bioaccumulation of saxitoxins (STX) in the trophic chain, mainly in freshwater, are not completely known. This work aimed to elucidate the effects of STX on Hoplias malabaricus through trophic bioassay. The fish were fed once every five days with Astyanax sp. before being subjected to an intraperitoneal inoculation with the lysate of Cylindrospermopsis raciborskii culture containing 97% STX and 3% by neosaxitoxin and gonyautoxin during 20 days. The animal?s liver was assessed using biomarkers as activities of superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST), and glutathione peroxidase (GPx), and concentrations of reduced glutathione (GSH) and lipoperoxidation (LPO) and protein carbonylation (PCO). In the blood was analyzed... |
| Tipo: Artigo de periódico |
Palavras-chave: Cyanotoxin; Genotoxicidade; Paralytic shellfish poison; Cianotoxina; Eutroficação.; Peixe de água doce.; Eutrophication; Freshwater fish; Genotoxicity.. |
| Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/982178 |
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