Data/hora: 11/06/2024 02:57:31

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 24/01/2017
Data da última atualização: | 03/03/2017
Autoria: | MOURA, M. A. M.; JONSSON, C. M.
Afiliação: | MONICA ACAUI MARCONDES DE MOURA, IB-APTA; CLAUDIO MARTIN JONSSON, CNPMA.
Título: | Acute toxicity of mixture of sugarcane herbicides to tilapia fingerlings.
Ano de publicação: | 2016
Fonte/Imprenta: | Ecotoxicology and Environmental Contamination, v. 11, n. 1, p. 15-20, 2016.
DOI: | http://dx.doi.org/10.5132/eec.2016.01.03
Idioma: | Inglês
Conteúdo: | Abstract: Sugarcane cultivation is the most important agricultural activity in the State of São Paulo, which is responsible for over half of Brazilian production of the crop. Eutrophication and contamination of hydric resources caused by agricultural chemicals are major problems related to this crop. In the case of herbicides used to control weeds, aquatic organisms can be exposed to more than one toxic agent, and combinations of such pollutants can have different effects on biological systems. The aim of this work was to evaluate the toxic effects of mixtures of herbicides widely used in sugarcane cultivation, namely tebuthiuron (TBUT), ametryn (AMT), and Velpar K (a commercial mixture of diuron (DIU) and hexazinone (HZN)), to tilapia (Oreochromis niloticus) fingerling. The herbicides showed low to moderate toxicity and AMT was notably more toxic then TBUT and DIU+HZN. The mixtures were found to be moderately toxic to the tilapia fingerling (LC50;96h were: TBUT+AMT: 10.76 mg L-1; (DIU+HZN)+TBUT: 43.09 mg L-1; and (DIU+HZN)+TBUT+AMT: 11.90 mg L-1), and a slight antagonism was observed between the components tested. These findings could contribute to the establishment of maximum permissible levels for the herbicides in Brazilian continental water bodies.
Thesagro: | Cana de açúcar; Herbicida; Oreochromis niloticus; Tilápia nilótica; Toxidez.
Thesaurus Nal: | Acute toxicity; Ametryn; Diuron; Freshwater fish; Herbicides; Hexazinone; Sugarcane; Tebuthiuron.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/153863/1/2016AP23.pdf
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (15228-1) - UPC - AP - DD -  -  -  - DIS