Data/hora: 12/06/2024 14:52:19

Provedor de dados: | 3
País: | Brazil
Título: | Influence of a net cage tilapia culture on the water quality of the Nova Avanhandava reservoir, São Paulo State, Brazil - doi: 10.4025/actascibiolsci.v34i3.7298
Autores: | Mallasen, Margarete; Instituto de Pesca; Barros, Helenice Pereira de; Instituto de Pesca; Traficante, Daniela Polizeli; Estadual Paulista “Julio de Mesquita Filho”; Camargo, André Luiz Scarano; Escama Forte Aquacultura e Meio Ambiente Ltda.
Data: | 2012-06-25
Ano: | 2012
Palavras-chave: | 5.06.02.01-2 limnology; Phosphorus; Nutrients; Intensive fish farming; Tilapia Fatores abióticos de águas interiores.
Resumo: | In order to understand the influence of a net cage tilapia culture on the environment, water quality parameters were investigated during the period between December, 2005 and November, 2007. Three sampling stations were established in the reservoir of Nova Avanhandava (Zacarias, São Paulo State) as follows: upstream of net cage area (P1), in the rearing place (P2) and downstream of net cage area (P3). The mean values of the parameters examined in the water sampling stations were within the standards of water quality recommended by resolution no. 357/2005 of the Conselho Nacional do Meio Ambiente for class 2 freshwater bodies. A significantly higher mean concentration of total phosphorus (p &amp;lt; 0.05) in the P2 (0.035 mg L-1) was the result of the uneaten feed and feces of fish. The average concentration of total phosphorus in P3 was lower (0.015 mg L-1), which was assimilated by the aquatic ecosystem. The frequent monitoring of the water parameters is fundamental, so the producer can adjust the management according to environmental conditions, by reducing fish density or changing feeding rates for example, to mitigate or avoid water quality deterioration.
Tipo: | Estudo da qualidade de água
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7298

10.4025/actascibiolsci.v34i3.7298

Editor: | Universidade Estadual De Maringá

Formato:

application/pdf

application/pdf

Fonte:

Acta Scientiarum. Biological Sciences; v. 34, n. 3 (2012); 289-296

Acta Scientiarum. Biological Sciences; v. 34, n. 3 (2012); 289-296

Fonte:

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DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAIS  Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Biological Sciences, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).