Biological Fluid Mechanics -- Starfish larvae
8. W. Gilpin, Vivek N. Prakash, and M. Prakash
Vortex arrays and entangled cilia underly the feeding vs. swimming tradeoff in sea star larvae
Nature Physics, 13, 380-386 (2017)
(Video Gallery Below)
- News & Views: V. I. Fernandez & R. Stocker, Hydrodynamics: Modus vivendi, Nature Physics (2016) [web link]
- APS/DFD ‘Milton van Dyke Award’ (Video) - 2016 [web link]
- ‘First place’, Nikon Small World in Motion Competition - 2016 [web link]
- ‘Image of distinction’, Nikon Small World Photomicrography Competition - 2016 [web link]
- Media: Stanford News, New York Times, Nature News, Phys.org, Live Science, Science Daily, EurekAlert, Futurity, Popular Science, Business Insider, Daily mail, CBS News, Smithsonian, Vox, FYFD
Video Gallery
Video 1: Feeding vortices created by a starfish larva.
An eight-week-old starfish larva in water containing 6 um beads and ~5.5 um Rhodomonas lens algae. Frames combined over 3 second intervals using maximum-intensity projection, video shown at 8x speed. Field of view: 3.3 um.
Video 2: Swimming starfish larvae in a Petri dish.
Free-swimming eight week old Patiria miniata larvae in water containing 6 um beads and R. lens. Video shown 8x speed. Field of view: 22 mm.
Video 3: Swimming starfish larvae
Two freely swimming eight week old larvae of the starfish Patiria miniata, in water containing 6 um beads and R. lens. Video shown at 4x speed. Field of view: 5.5 mm.
Video 4: Swimming starfish larva in a Petri dish
An eight-week-old starfish larva swims in a rectangular chamber containing 6 um beads and R. lens algae. Frames combined over 1.5 second intervals using maximum-intensity projection, video shown at 8x speed. Field of view: 3.3 um.
Video 6: Pair of defects in a starfish ciliary band
A "+" and "-" ciliary defect pair on the side lobe a starfish larva. Water contains 6 um beads and R. lens algae. Video shown in real time. Field of view: 700 um.
Video 11: Feeding and swimming behaviors created by a starfish larva
An eight-week-old starfish larva in water containing 6 um beads and ~5.5 um Rhodomonas lens algae. Frames combined over 3 second intervals using maximum-intensity projection, video shown at 8x speed. Behavioral transitions are seen in the video at the 1 s, 5 s, 13 s, and 22 s markers. Field of view: 3.3 um.
Video 12: Circumoral field of a starfish larva
The circumoral field of an eight-week old starfish larva during feeding. Algae particles can be seen being carried along the ciliary band. Video shown at 1x speed. Field of view 427 um.