Mining the diatom genome for the mechanism of biosilicification

Jusuti et al. 10.1073/pnas.0711944105.

Supporting Information

Files in this Data Supplement:

SI Movie 1
SI Movie 2
SI Movie 3
SI Movie 4
SI Movie 5
SI Movie 6




SI Movie 1

Movie 1. Using the tail as a fifth leg during vertical running. Dorsal and side view of the gecko (Cosymbotus platyurus) running up a vertical track. Slippage on the yellow slippery patch initiates the climbing tail response, where the tail is pressed into the wall to balance the over-turning moment. The second slip shows reactivation of the tail response. This movie was recorded at 500 frames s-1 and is displayed three times in real time and then once at 1/20 speed.





SI Movie 2

Movie 2. Climbing tail response. Dorsal and side view of the gecko (C. platyurus) running up a vertical track at 95 cm s-1. The tail is held off the surface until the forefoot slips. The first five brief video clips are shown at actual speed, and the second two are shown at 1/10 speed. The final movie was recorded at 500 frames per second and is displayed at 1/100 speed. In the final clip, the forefoot motion is traced in blue in the dorsal view. The forefoot trace changes to green as it slips toward the midline and returns to blue after the slip. The tail is traced in red in the side view. The tail trace changes to green when the foot slips activating the response. The tail trace changes back to red showing its movement toward the surface to generate a stabilizing force preventing pitch-back.





SI Movie 3

Movie 3. Extreme kickstand-like posture in geckos running up a vertical track after large repeated slippage. When the tail climbing response failed due to a large perturbation, geckos prevented overturning by using the tail like a bicycle kickstand. This movie was recorded at 500 frames s-1 and is displayed at 1/20 speed.





SI Movie 4

Movie 4. Tail-induced air-righting reaction. Gecko placed upside down releases from the underside of a loosely mounted platform. After the initial falling phase, tail rotation produces a counter-rotation of the body until the animal attains a right-side up, skydiving posture. Lateral view shown on left and head on or cranial view on right. This movie was recorded at 500 frames s-1 and is displayed at real time four times, 1/10 speed twice, and at 1/100 speed.





SI Movie 5

Movie 5. Tail-induced turning maneuver in yaw during aerial descent. Gecko is placed in a tilted wind tunnel blowing air upward to match the air-flow observed during descent. Circular tail motion is coupled with yaw maneuvers or turning of the body. Geckos that rotated their tail in counterclockwise direction when viewed head-on initiated a counterclockwise turn to the left in yaw when viewed from above. This movie was recorded at 250 frames s-1 and is displayed at 1/25 speed.





SI Movie 6

Movie 6. Tail-induced translation in cranial direction during aerial descent produced by repeated sagittal plane tail undulations. Geckos placed in a wind tunnel blowing air upward were capable of gliding forward by generating translation in the cranial direction using alternating the tail-induced positive pitch with tail-induced negative pitch. This movie was recorded at 300 frames s-1 and is displayed at real time four times and at 1/10 speed twice.

This Article

  1. Published online before print January 29, 2008, doi: 10.1073/pnas.0711994105 PNAS February 5, 2008 vol. 105 no. 5 1391-1392
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