To develop an effective technique for decreasing rotifer contamination in Spirulina platensis cultivation, the effects of 5-fluoro-2'-deoxyuridine (FUdR; 0, 60, 110, 160, 210, and 260 μg/L) on the development, reproduction and population growth of the rotifer, Brachionus plicatilis and on the growth, photosynthetic properties and nutritional composition of S. platensis were investigated. The results showed that the negative effects of FUdR on the pre-reproductive period, the number of total eggs per female and the egg hatching rate of rotifers were dose-dependent. The egg hatching of rotifers was fully inhibited by exposure to 260 μg/L FUdR. The effects of FUdR on the biomass, maximum quantum yield (F_v/F_m), effective quantum yield (φPSII), amino acid content and fatty acid composition of S. platensis were not significant. Therefore, these results suggest that FUdR has excellent potential for controlling grazing zooplankton contamination in microalgal cultivation.

中文翻译：

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使用 5-Fluoro-2'-deoxyuridine 控制螺旋藻培养中轮虫污染的可能性

为开发减少螺旋藻培养中轮虫污染的有效技术，研究 5-fluoro-2'-deoxyuridine (FUdR; 0, 60, 110, 160, 210, 和 260 μg/L) 对发育、繁殖和轮虫、 Brachionus plicatilis的种群增长以及对S的生长、光合特性和营养成分的影响。 platensis进行了调查。结果表明，FUdR对生殖前期、每只雌性总卵数和轮虫卵孵化率的负面影响呈剂量依赖性。暴露于 260 μg/L FUdR 可完全抑制轮虫的卵孵化。FUdR 对生物量、最大量子产率 ( F _v/ F _m )、有效量子产率 (φPSII)、 S的氨基酸含量和脂肪酸组成。 platensis不显着。因此，这些结果表明，FUdR 在微藻培养中具有控制放牧浮游动物污染的巨大潜力。