Urban secondary sewage: an alternative medium for the culture of Tetraselmis chuii (Prasinophyceae) and Dunaliella viridis (Chlorophyceae)

Brazilian Archives of Biology and Technology

Rauquírio André Albuquerque Marinho Da Costa¹  Maria Luise Koening¹  Sílvio José De Macedo¹ 

[1] ,Universidade Federal de Pernambuco Departamento de Oceanografia Recife PE ,Brazil

关键词: Microalgae;    culture;    urban secondary sewage;    alternative medium;   

DOI  :  10.1590/S1516-89132004000300016

来源: SciELO

【 摘 要 】

The effect of different concentrations (10, 20, 30 and 40%) of urban secondary sewage on the growth of Tetraselmis chuii (Prasinophyceae) and Dunaliella viridis (Chlorophyceae) was examined to verify the possibility of its use as an alternative culture medium for these species. Stocks and 700mL duplicate batch cultures were maintained under controlled laboratory conditions. 30% and 40% additions were the most efficient for the growth of both species. Statistical analysis of the adjusted growth (cell.mL-1) and biomass (µg chlorophyll-a.mL-1) curves performed using the Chi-square test (p<0.05) demonstrated significant differences between the nutritive medium f/2 and the 40% addition used for these two species. The results suggested that some of the concentrations tested here yielded satisfactory cell densities and growth rates when compared with other culture media (macroalgae, bovine and chicken manure extracts). Thus it could be used by semi intensive aquaculture systems.

【 授权许可】

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