Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 3
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
First report about saxitoxins in freshwater fish Hoplias malabaricus through trophic exposure. Repositório Alice
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 em periódico indexado (ALICE) Palavras-chave: Peixe de água doce; Traíra; Toxina.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/901961
Imagem não selecionada

Imprime registro no formato completo
Hematologic and hepatic responses of the freshwater fish Hoplias malabaricus after saxitoxin exposure. Repositório Alice
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 em periódico indexado (ALICE) Palavras-chave: Freshwater fish; Eutrophication; Cyanotoxin; Genotoxicidade; Genotoxicity; Paralytic shellfish poison; Peixe de água doce; Eutroficação; Cianotoxina.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/982178
Imagem não selecionada

Imprime registro no formato completo
Subchronic effects of dipyrone on the fish species Rhamdia quelen. Repositório Alice
PAMPLONA, J. H.; OBA, E. T.; SILVA, T. A.; RAMOS, L. P.; RAMSDORF, W. A.; CESTARI, M. M.; RIBEIRO, C. A. O.; ZAMPRONIO, A. R.; ASSIS, H. C. S. de.
The use of the non-steroidal anti-inflammatory drugs such as dipyrone is so widespread that this drug and its metabolites have been detected in effluents and surface water. This study aimed to evaluate the potential toxic effects of dipyrone on the aquatic environment, using a native fish species, Rhamdia quelen. Fish were exposed to three concentrations of dipyrone, 0.5, 5 and 50 mg/L, in the water for 15 days, and hematological, biochemical, genetic and morphological biomarkers were evaluated. The glutathione S-transferase activity decreased in the highest concentration in relation to the control group. In addition, hematocrit, red blood cells and thrombocyte counts were decreased in all three exposed groups in relation to the control group. The comet...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Peixe de água doce; Bagre.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/902083
Registros recuperados: 3
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional