脚动物Calanus sinicus对形成花的藻类的行为反应Prorocentrum donghaiense和Skeletonema costatum
Jiawen Ying1, Jiayi Xu1, Anglu Shen2
1State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 200241, Shanghai, China; Hainan Institute, East China Normal University, Sanya, 572025, China.
Marine environmental research
|February 12, 2025
概括
动物浮游生物copepod Calanus sinicus采用适应性策略,以生存有害的藻类繁殖 (HABs). 它减少了食和改变了游泳行为,在改变海洋生态系统方面表现出了弹性.
科学领域:
- 海洋生态海洋生态学
- 动物浮游生物生物学 动物浮游生物
- 有害的藻类繁殖 (HABs)
背景情况:
- 有害藻类繁殖 (HABs) 对沿海生态系统构成重大威胁.
- 在HAB期间动物浮游生物的应对机制尚不清楚.
- Calanus sinicus是北太平洋的占主导地位的动物浮游生物,经常遇到HABs.
研究的目的:
- 为了研究Calanus sinicus对HABs的行为反应.
- 在HAB条件下量化C. sinicus的能源支出.
- 了解动物浮游生物在有害藻类繁殖期间的适应策略.
主要方法:
- 瓶子化用于测量碳摄入率.
- 高速视频观测用于行为分析.
- 对C. sinicus暴露于不同藻类物种 (Prorocentrum donghaiense,Skeletonema costatum,Platymonas helgolandica) 的影响.
主要成果:
- 与健康的猎物相比,C. sinicus对HAB物种的碳摄入率明显较低.
- 减少食几乎无法满足代谢需求.
- 观察到明显的行为反应:逃生式跳跃 (P. donghaiense) 和重新定位游泳 (S. costatum).
- 使用替代食物来源缓解了行为.
结论:
- C. sinicus 展示了适应性策略来应对 HAB,包括选择性养和行为修改.
- 这些策略涉及节能和积极避免开花斑点.
- 这些发现突显了动物浮游生物在波动的海洋环境中的弹性,并为保护工作提供了信息.
相关概念视频
01:23Red Algae
Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
01:21Green Algae
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
01:27Diversity of Protists II
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
01:19Other Algae
The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...