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Campo DC | Valor | Idioma |
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dc.contributor.author | Botelho, Rafael Grossi | - |
dc.contributor.author | Santos, J. B. | - |
dc.contributor.author | Oliveira, Taciane Almeida de | - |
dc.contributor.author | Braga, Renan Rodrigues | - |
dc.contributor.author | Byrro, Eliza Catharina Mota | - |
dc.date.accessioned | 2020-06-15T21:54:27Z | - |
dc.date.available | 2020-06-15T21:54:27Z | - |
dc.date.issued | 2009 | - |
dc.identifier.uri | https://repositorio.inpa.gov.br/handle/1/18393 | - |
dc.description.abstract | Two assays were carried out to evaluate Oreochromis niloticus sensitivity to different herbicides. In the first experiment, atrazin concentrations (0; 2.5; 5; 10 and 20 mg L-1) were evaluated aiming to determine lethal concentration (LC50) to O. niloticus. In the second assay, the effects of the herbicide mixtures alachlor + atrazin (5.33 + 5.33 mg L-1), diuron + MSMA (5.33 + 2.13 mg L-1), paraquat (1.33 mg L-1) and 2,4-D + picloran (1.28 + 0.34 mg L-1), were evaluated on O. niloticus survival after 96 h of exposure. In the first assay, a sharp decrease in fingerlings survival was observed from 3 mg L-1 of atrazin with CL50 value of 5.02 mg L-1 and a high biomass decrease due to herbicide presence. In the second assay, a greater negative effect was observed on fingerlings by alachlor + atrazin.. After 72 h of incubation, intoxication rate showed a reduction in the number of individuals of 17.4% for paraquat, 2,4 D + picloram and diuron + MSMA, and of 100% for alachlor + atrazin. It was concluded that CL50 obtained for atrazin is inferior to that listed as toxic to trouts and that the alachlor + atrazin mixture can be characterized as a risk to O. niloticus, even when applied at commercially recommended rates. | en |
dc.language.iso | pt_BR | pt_BR |
dc.relation.ispartof | Volume 27, Número 3, Pags. 621-626 | pt_BR |
dc.rights | Restrito | * |
dc.subject | Oreochromis Niloticus | en |
dc.subject | Salmonidae | en |
dc.title | Acute toxicity to herbicides to Oreochromis niloticus | en |
dc.title.alternative | Toxicidade aguda de herbicidas a tilápia (Oreochromis niloticus) | pt_BR |
dc.type | Artigo | pt_BR |
dc.publisher.journal | Planta Daninha | pt_BR |
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