The application of ceramsite ecological floating bed in aquaculture: its effects on water quality, phytoplankton, bacteria and fish production

文献类型： 外文期刊

第一作者： Li, Xiao-li

作者： Li, Xiao-li;Tao, Ling;Dai, Li-li;Peng, Liang;Song, Chao-feng;Li, Gu;Marella, Thomas Kiran

作者机构：

关键词： aquaculture; ceramsite floating bed; fish pond; microorganisms; phytoplankton; water quality

期刊名称：WATER SCIENCE AND TECHNOLOGY （ 影响因子：1.915； 五年影响因子：2.054 ）

ISSN： 0273-1223

年卷期： 2018 年 77 卷 11 期

页码：

收录情况： SCI

摘要： In recent years, biological floating bed technology has been applied increasingly in aquaculture ponds. In this study we developed a novel floating bed made from ceramsite and studied its effect on water quality, phytoplankton, bacteria and fish growth. Water quality was effectively regulated and controlled in ceramsite floating bed (CFB) ponds with an average transparency of 23.18 cm, ammonia nitrogen (NH4+-N) of 2.30 mg L-1, total nitrogen (TN) of 5.09 mg L-1 and total phosphate (TP) of 1.32 mg L-1 which are lower than in control ponds without CFB. Increased phytoplankton species diversity, bacterial number, metabolic activity and microbial diversity was observed with CFB. At the end of growth stage, feed conversion ratio (FCR) was reduced with a total fish yield of 14,838 kg ha(-1) at a survival rate of 77.2% in CFB ponds, which is significantly higher than control (P<0.05). These results emphasize the potential of ecological floating bed to improve water quality, microalgal diversity, reduce the risk of harmful algal blooms and increase the number, activity and diversity of microorganisms as well as fish yield.

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