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Abstract
Choanoflagellates are unicellular aquatic organisms with a single flagellum that
drives a feeding current through a funnel-shaped collar filter on which bacteria-sized prey are caught. Using computational fluid dynamics (CFD) we model the beating flagellum and the complex filter flow of the choanoflagellate Diaphanoeca grandis. Our CFD simulations based on the current understanding of the morphology underestimate the experimentally observed clearance rate by more than an order of magnitude: The beating flagellum is simply unable to draw enough water through the fine filter. Our observations motivate us to suggest a radically different filtration mechanism that requires a flagellar vane (sheet), and addition of a wide vane in our CFD model allows us to correctly predict the observed clearance rate.
drives a feeding current through a funnel-shaped collar filter on which bacteria-sized prey are caught. Using computational fluid dynamics (CFD) we model the beating flagellum and the complex filter flow of the choanoflagellate Diaphanoeca grandis. Our CFD simulations based on the current understanding of the morphology underestimate the experimentally observed clearance rate by more than an order of magnitude: The beating flagellum is simply unable to draw enough water through the fine filter. Our observations motivate us to suggest a radically different filtration mechanism that requires a flagellar vane (sheet), and addition of a wide vane in our CFD model allows us to correctly predict the observed clearance rate.
| Original language | English |
|---|---|
| Publication date | 2017 |
| Publication status | Published - 2017 |
| Event | Complex Motion in Fluids Summer School - Cambridge University, Cambridge, United Kingdom Duration: 24 Sept 2017 → 30 Sept 2017 |
Course
| Course | Complex Motion in Fluids Summer School |
|---|---|
| Location | Cambridge University |
| Country/Territory | United Kingdom |
| City | Cambridge |
| Period | 24/09/2017 → 30/09/2017 |
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Dive into the research topics of 'Computational Fluid Dynamics of Choanoflagellate Filter-Feeding'. Together they form a unique fingerprint.Activities
- 1 Participating in or organising workshops, courses, seminars etc.
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Complex Motion in Fluids Summer School
Asadzadeh, S. S. (Participant), Walther, J. H. (Participant), Nielsen, L. T. (Participant), Dölger, J. (Participant), Kiørboe, T. (Participant) & Andersen, A. P. (Participant)
24 Sept 2017 → 29 Sept 2017Activity: Attending an event › Participating in or organising workshops, courses, seminars etc.
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