Animal With Gears - Interacting Gears Synchronize Propulsive Leg Movements In A Jumping Insect

boris

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Oct 1, 2019
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https://www.researchgate.net/public..._Propulsive_Leg_Movements_in_a_Jumping_Insect

"Many insects jump prodigiously by rapid and powerful movements of their hind legs.
Two arrangements of the hindlegs are found; those of grasshoppers and fleas move in separate planes at the side of the body;
those of the champion jumping insects, froghoppers and planthoppers, move counterrotationally in approximately the same near-horizontal plane beneath the body . In the latter, synchronous movements of the hindlegs are necessary to avoid rapid spinning in the yaw plane."

"To reveal the mechanism of this precise synchronization, we made high-speed videos of jumping in nymphs"
"The two propulsive hindlegs started moving within 30 ms of each other . Such precise synchrony would be difficult to achieve by 1-ms-long neural spikes."

"The mechanical gears in Issus enhance the synchrony between leg movements to the level of microseconds, so that they are more tightly coupled than most limbed motions."

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yerrag

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Wonder if rowers can synchronize better adapting from insects in a dragon boat race.
 
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