"表面浏览"可能允许"过"的原生动物对形成殖民地的有毒蓝藻细菌繁殖进行自上而下的控制
Wenjie Xu1, Haiyan Zhu1, Lu Zhang1
1Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China.
Environmental science & technology
|June 30, 2023
概括
像Paramecium这样的原生动物在Microcystis殖民地上放牧,减少有毒的开花. 帕拉梅改变了养行为,以控制更大的殖民地,影响水生生态系统.
科学领域:
- 水生生态学 水生生态学
- 微生物学 微生物学
- 生态毒理学 生态毒理学
背景情况:
- 微囊的开花对水生生态系统构成重大威胁.
- 原生动物的放牧是一种已知的单细胞Microcystis.
- 以前人们认为多细胞Microcystis殖民地可以抵抗放牧.
研究的目的:
- 为了研究状植物Paramecium对Microcystis开花的放牧影响.
- 为了确定Paramecium是否可以控制微囊的种群,尽管殖民地形成.
- 了解帕拉梅的养行为变化,以应对Microcystis殖民地大小.
主要方法:
- 使用模型状动物Paramecium作为一个牧场.
- 观察到Paramecium在不同尺寸的Microcystis殖民地上放牧.
- 量化了放牧对微囊种群和微囊水平的影响.
主要成果:
- 帕拉梅有效地在微囊上放牧,减少了种群和有毒的微囊,即使有很大的殖民地.
- 帕拉梅从过器养转向在>12-20微米的殖民地上浏览表面.
- 由于面积与体积比率的减少,随着大殖民地比例的增加,牧场的影响呈指数级下降.
结论:
- 原生动物,特别是Paramecium,对Microcystis的开花进行了自上而下的控制.
- 在Paramecium中改变的养行为允许在更大的殖民地上放牧.
- 原生动物在Microcystis花上放牧的效率受殖民地大小和比例的影响.
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