期刊
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
卷 6, 期 -, 页码 139-144出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.algal.2014.11.003
关键词
Spirulina platensis; Botanical pesticide; Synergistic combination; Ammonium bicarbonate; Rotifer extermination
资金
- National Basic Research Program of China (973 Program) [2011CB2009004]
- Key Project of Jiangsu Natural Science Foundation [BK2011009]
- Prospective Project for Production and Research Cooperation of Jiangsu [BY2013044]
- National High Technology Research and Development Program of China (863 Program) [2013AA065801]
Rotifer-control effects of a synergistic celangulin/toosendanin (CA/TSN) combination at a 1:9 ratio, and its safety for Spirulina platensis growth, were studied. Two additions of 0.003-0.006 mg/L of the combination inhibited rotifer reproduction within 3 days, and showed no toxicity toward algal biomass and phycocyanin levels. A comparison between the CA/TSN and NH4HCO3 treatments indicated that 200 mg/L NH4HCO3 produced more acute toxicity based on ammonia intoxication, while 0.003 mg/L CA/TSN showed lasting effects by sterilizing rotifers. In the NH4HCO3 treatment, rotifers still had slow reproduction, partially owing to ammonia volatilization. Neither the NH4HCO3 nor CA/TSN treatment changed algal filament morphology; however, the NH4HCO3 treatment initially inhibited algal growth more significantly. S. platensis treated by the CA/TSN combination reached higher biomass in the same time frame. Given its effectiveness, together with projected farm-earnings increase, the CA/TSN combination showed excellent potential and economic feasibility for rotifer extermination in outdoor mass cultures of S. platensis. (C) 2014 Elsevier B.V. All rights reserved.
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