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| ANDRADE-PORTO, S. M.; AFFONSO, E. G.; KOCHHANN, D.; MALTA, J. C. O.; ROQUE, R.; ONO, E. A.; ARAÚJO, C. S. O.; TAVARES-DIAS, M.. |
| This study evaluated the in vitro and in vivo antiparasitic efficacy of formalin against Dawestrema cycloancistrium, the effects on the physiological response of Arapaima gigas and the residual action on fish muscle after 96h of exposure. As regards the in vitro assay, 0, 22, 44, 66, 88, 110, 330, 660 and 880 mg L-1 formalin were tested. After 1h of exposure to 660 and 880 mg L-1 formalin, there was a 100% mortality of D. cycloancistrium as well as after 2h of exposure at 330 and 110 mg L-1 and 3h of exposure at 44, 66 and 88 mg L-1. Concerning the in vivo test, when fish were exposed to formalin at 0, 220, 330, 440 and 550 mg L-1, there was 100% survival at all concentrations and exposure times evaluated. Baths of 1h with 440 and 550 mg L-1 formalin... |
| Tipo: Artigo de periódico |
Palavras-chave: Treatment.; Parasite; Peixe de água doce; Parasito; Hematologia; Tratamento; Fisiologia; Freshwater fish; Hematology; Physiology.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1070034 |
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| ANDRADE-PORTO, S. M.; RAMOS, C. A.; ROQUE, R.; AFFONSO, E. G.; BARCELLOS, J. F. M.; QUEIROZ, M. N.; ARAÚJO, C. S. O.; TAVARES-DIAS, M.. |
| This study aimed to determine the lethal concentration and the structural and ultra-structural effects caused by the formalin exposure on juveniles of Arapaima gigas. Ninety fish (60.1± 2.5g and 20.2±0.9cm) were exposed to 0, 22, 44, 66, 88 and 110mg L-1 in order to determine the lethal concentration (LC50-96h) that was 36.4mg L-1 of formalin. Sublethal effects were evaluated using histopathological analysis on the gills and assessment of behavioral alterations and clinical signs. The LC50 of formalin for 24, 48 and 72h was 88.3, 64.7 and 56.8mg L-1 respectively. Clinical signs and behavioral changes were found: erratic swimming, lethargy, crowding on the water surface, loss of hydrodynamic equilibrium, spasms and agonistic confrontation, which were... |
| Tipo: Artigo de periódico |
Palavras-chave: Formalina; Toxicidade; Treatment; Peixe de Água Doce; Pirarucu; Tratamento; Formalin; Toxicity; Arapaima gigas; Freshwater fish. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095738 |
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