在波罗的海植物浮游生物繁荣期间,微生物食物网动力学和结构的高时间分辨率
Sohrab Khan1, Klaudia Wdówka1, Joanna Calkiewicz1
1Department of Fisheries Oceanography and Marine Ecology, National Marine Fisheries Research Institute, Gdynia, Poland.
Environmental microbiology
|October 31, 2025
概括
杂食纳米鞭毛动物在波罗的海食物网中至关重要,它们以细菌和其他原生动物为食. 它们的主导地位,特别是在春天,突出了它们在营养循环和能量转移中的重要作用.
科学领域:
- 海洋微生物生态学
- 水生食物网的动态
- 亲生组织学 亲生组织学 Protistology
背景情况:
- 异质型纳米鞭状体 (HNF) 在水生微生物食物网中至关重要.
- 传统上被视为细菌食者,HNF表现出万事食者和掠食性食行为.
- 了解HNF社区动态是水生生态系统运作的关键.
研究的目的:
- 调查关键异质型纳米鞭状体 (HNF) 群体的种群动态.
- 解决微生物食物网的相互作用在类型层面.
- 分析HNF社区在波罗的海春季和秋季植物浮游生物开花期间的转移.
主要方法:
- 结合催化报告器沉积-光现场混合化 (CARD-FISH) 与短和长安普利康测序.
- 在春季和秋季植物浮游生物开花期间进行高频采样.
- 遗传学分析以确定主导的HNF血统及其养策略.
主要成果:
- 食性类动物和捕食性MAST-2是主导的HNF群体,特别是在春天.
- 细菌类群体 (MAST-1,CRY1) 的数量较少.
- 长时间阅读测序揭示了季节性变化,其中Katablepharis sp. 和MAST-2D在春季达到顶峰,其他血统主导夏季/秋季.
结论:
- 杂食性HNF在研究的波罗的海生态系统中比细菌性HNF发挥更重要的作用.
- HNF是细菌和其他鞭毛动物的重要食用者,也是纤毛动物的食物来源.
- 该研究以精细的分类学和时间尺度解决了HNF食物网的动态.
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