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First Gear Mechanism Discovered In Nature

GameboyRMH writes "A gear mechanism has been discovered [paywalled original paper here, for those with access] for the first time in nature in the nymph of the Issus, a small plant-hopping insect common in Europe. It uses the gears to synchronize the movement and power of its hind legs, forcing the legs to propel it in a straight line when jumping, which would otherwise be impossible for the insect if it had to control the timing and force of its leg muscles independently."

8 of 136 comments (clear)

  1. picture by phantomfive · · Score: 5, Informative

    If you look at the picture of the thing, it's pretty amazing. Each gear strip is 400 micrometers long.

    --
    "First they came for the slanderers and i said nothing."
  2. Re: B effing S by tysonedwards · · Score: 5, Informative

    The Synopsis was a little lacking in detail. Namely, the gear configuration for the legs on this adolescent insect allowed it to jump faster and further than it would normally be able to do safely. Through use of the gear configuration, it allowed the adolescent insect to develop it's nervous system to adapt to acceleration to 400g while it's muscular structure and carapace developed, at which point the years are shed. Basically, these are training wheels, not that they are inherently better. What is interesting is that the gear design is quite different than what we humans have created, and allows for highly effective forward momentum with minimal energy expenditure at the expense of reverse.

    --
    Thirty four characters live here.
  3. Full text as PDF by pdfbuddy · · Score: 5, Informative

    You can read the paper's full text here: http://freepdfhosting.com/292b7f1c8f.pdf Some highlights: On page 2, there are some great images of the gears in action. Do check them out! Your friend, pdfbuddy.

  4. Re:B effing S by AK+Marc · · Score: 5, Informative

    Have you never seen a cricket or grasshopper?

    Yes. They have stabilizers. This little bug doesn't, thus needs more accurate jumping.

  5. Re:B effing S by Rockoon · · Score: 5, Informative

    ..and here is a video of the gears in action.

    --
    "His name was James Damore."
  6. Re:B effing S by QilessQi · · Score: 5, Insightful

    To me, this level of detail in nature is strong evidence for creation rather than evolution.

    I suspect that Creationists would say the same thing about any complex biological structure. Interlocking gears are interesting because human beings manufacture similar structures, but there's nothing about them that's more miraculous than, say, a retina.

    And if biologists can find fossils with more-primitive gear structures as we go back in time -- fewer teeth, less-effective interlocking, etc. -- that would actually support evolution even more, by demonstrating that it is able to produce interesting machines by gradual (and occasionally stark) mutation.

    Of course, I doubt that most Creationists can ever be swayed from their opinions, no matter what scientific evidence is presented, because evidence for evolution in the fossil record is already overwhelming and yet there are still Creationists. That's the power of religion.

  7. Nature is the best innovator over time, bar none. by Banichi · · Score: 5, Informative

    There exists a Weevil with a screw as a leg joint.
    https://en.wikipedia.org/wiki/Trigonopterus_oblongus

    Nature is absolutely awesome.

  8. Re: B effing S by FuzzMaster · · Score: 5, Funny

    Spouting unscientific nonsense in a crowd of nerds is, by definition, trolling.