Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2009930118 |
Foraging trade-offs, flagellar arrangements, and flow architecture of planktonic protists | |
Lasse Tor Nielsen; Thomas Kiørboe | |
2021-01-19 | |
发表期刊 | Proceedings of the National Academy of Sciences
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出版年 | 2021 |
英文摘要 | Unicellular flagellated protists are a key element in aquatic microbial food webs. They all use flagella to swim and to generate feeding currents to encounter prey and enhance nutrient uptake. At the same time, the beating flagella create flow disturbances that attract flow-sensing predators. Protists have highly diverse flagellar arrangements in terms of number of flagella and their position, beat pattern, and kinematics, but it is unclear how the various arrangements optimize the fundamental trade-off between resource acquisition and predation risk. Here we describe the near-cell flow fields produced by 15 species and demonstrate consistent relationships between flagellar arrangement and swimming speed and between flagellar arrangement and flow architecture, and a trade-off between resource acquisition and predation risk. The flow fields fall in categories that are qualitatively described by simple point force models that include the drag force of the moving cell body and the propulsive forces of the flagella. The trade-off between resource acquisition and predation risk varies characteristically between flow architectures: Flagellates with multiple flagella have higher predation risk relative to their clearance rate compared to species with only one active flagellum, with the exception of the highly successful dinoflagellates that have simultaneously achieved high clearance rates and stealth behavior due to a unique flagellar arrangement. Microbial communities are shaped by trade-offs and environmental constraints, and a mechanistic explanation of foraging trade-offs is a vital part of understanding the eukaryotic communities that form the basis of pelagic food webs. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/311435 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Lasse Tor Nielsen,Thomas Kiørboe. Foraging trade-offs, flagellar arrangements, and flow architecture of planktonic protists[J]. Proceedings of the National Academy of Sciences,2021. |
APA | Lasse Tor Nielsen,&Thomas Kiørboe.(2021).Foraging trade-offs, flagellar arrangements, and flow architecture of planktonic protists.Proceedings of the National Academy of Sciences. |
MLA | Lasse Tor Nielsen,et al."Foraging trade-offs, flagellar arrangements, and flow architecture of planktonic protists".Proceedings of the National Academy of Sciences (2021). |
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