| 生物操纵对常见底栖丝状绿藻的控制研究 |
| Biological Control of Benthic Filamentous Green Algae |
| 投稿时间：2022-05-07 修订日期：2024-05-23 |
| DOI：10.15928/j.1674-3075.202205070154 |
| 中文关键词:生物操纵 丝状绿藻 中华鳑鲏 水绵 |
| 英文关键词:biological manipulation filamentous green algae Rhodeus sinensis Spirogyra sp. |
| 基金项目:国家自然科学基金(U1904124)；国家现代农业产业技术体系藻类体系(CARS-50) |
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| 中文摘要: |
| 为调控水体丝状绿藻的生长，提供安全高效的绿藻暴发解决方案，通过操纵水体中不同的生物种类，探究水生动物对底栖丝状绿藻生长的抑制效果。开展的2期生物操纵实验中，控制实验Ⅰ研究了耳萝卜螺(Radix auricularia)、子陵吻鰕虎鱼(Rhinogobius giurinus)、中华鳑鲏(Rhodeus sinensis)和日本沼虾(Macrobrachium nipponense)对底栖丝状绿藻水绵(Spirogyra sp.)的控制效果；控制实验Ⅱ研究了中华鳑鲏对水绵、水网藻(Hydrodictyon reticulatum)、刚毛藻(Cladophora sp.)生长的抑制效果。结果表明，中华鳑鲏实验Ⅰ处理组的固着态水绵生物量从实验前期的90 g/m2下降到实验末期的34 g/m2，相对于其他生物操纵对象，中华鳑鲏对浮游态和固着态水绵表现出极显著的抑制效果(P<0.01)；中华鳑鲏实验Ⅱ处理组中，固着态水绵生物量显著低于对照组(P<0.05)，固着态水网藻生物量和固着态刚毛藻生物量均略低于对照组，但差异不显著(P>0.05)，进一步支持中华鳑鲏对底栖丝状绿藻的抑制效果，特别是对水绵具有显著的抑制效果。中华鳑鲏在抑制底栖丝状绿藻生长的同时，对水体中其他浮游植物和浮游动物的影响并不显著(P>0.05)，表明中华鳑鲏作为控制丝状绿藻的潜在生物操纵对象具有很好的应用前景。 |
| 英文摘要: |
| In this study, we explored the potential for aquatic animals to control the growth of benthic filamentous green algae using biomanipulation, aiming to provide a safe and efficient solution for controlling overgrowth of filamentous green algae in aquatic ecosystems and for addressing algal blooms. Radix auricularia (snail), Rhinogobius giurinus (fish), Rhodeus sinensis (fish) and Macrobrachium nipponense (prawn) were selected as test aquatic animals, and control experiments were conducted in two phases: Phase I, experiments using R. auricularia, R. giurinus, R. sinensis, and M. nipponense to control a benthic filamentous green algae (Spirogyra sp.); Phase II, experiments using R. sinensis to control three species of benthic filamentous green algae (Spirogyra sp., Hydrodictyon reticulatum, and Cladophora sp.). All treatments during both phases included a control group and were run in triplicate. Physical and chemical parameters of the water body, and periphytic algae and plankton biomass during the experiments were determined. The biomass of attached Spirogyra sp. in Phase I was initially 90 g/m2 and decreased to a final biomass of 34 g/m2 after treatment with R. sinensis, significantly lower than the control or other biological treatment groups. R. sinensis exhibited significant control on both planktonic and attached Spirogyra sp. (P<0.01). In Phase II, the biomass of attached Spirogyra sp. was significantly lower than in the control group, while the biomass of attached Hydrodictyon reticulatum and Cladophora sp. decreased, but non-significantly, compared to the control group. The biomass reductions of attached Spirogyra sp., Hydrodictyon reticulatum and Cladophora sp. by R. sinensis were 98.27%, 12.45% and 67.91%, respectively. These results indicate that R. sinensis clearly exerts biological control on benthic filamentous green algae, but displays a preference for Spirogyra sp.. In conclusion, R. sinensis significantly reduced the biomass of benthic filamentous green algae, with no observed impacts on other phytoplankton and zooplankton, demonstrating the great potential of R. sinensis for biological control of filamentous algae. |
| 张怡光,张 曼,李 玫,吕绪聪,张银鹏,李昊钰,赵 慧,鲁雨果,秦 岩,李学军.2024.生物操纵对常见底栖丝状绿藻的控制研究[J].水生态学杂志,45(3):112-120. |
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