Extra arms?

Discussion in 'Physiology and Biology' started by devi, Jul 19, 2011.

  1. devi

    devi Blue Ring Registered

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    Just found this - Nine tentacled octo
    And wondered if it was seen here regularly? Has anyone seen a living specimen?
     
  2. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Somewhere, Tintenfisch mentioned that she ran across numerous oddities as well as finding photos of some with branching arms but I could not find the discussion but here is one of (or one similar) the pictures of the branching anomoly
     
  3. Level_Head

    Level_Head Vampyroteuthis Registered

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    They are curiosities indeed; rather like some of the genetic oddities that afflict humans.

    The mantle shape and size of that 96-armed octopus certainly seem unusual to me.
     
  4. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    It is hard to tell about the mantle since the live photo is a post brood (or possibly prebrood with eggs) female and after formalin the animals look quite different than in real life. Cassy prebrood with eggs had a similar odd look to the mantle.
     
  5. Tintenfisch

    Tintenfisch Architeuthis Staff Member Moderator

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    That was this thread. The octos had 8 'normal'-looking arms at the bases, but the tips split into many branches. In the instance above, here, it looks like a similar thing has happened but only once, and nearer the base of the arm, so that it looks like a whole extra arm.

    Didn't we have a threat about a penta- or hexapus recently, too?
     
  6. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    The last discussion I remember was when this one (in the original topic of the post) was first by the restaurant but I am batting 0 on finding things this week (but I DID find a reference to the post I was looking for and you found Kat :roll:)
     
  7. iAlex

    iAlex Vampyroteuthis Registered

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    I sold a Serpent Star with six legs today, if that counts... xD
     
  8. devi

    devi Blue Ring Registered

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    Wow, the branching arms are cool. As someone said on that thread, my first thought was injury then regrowth issues, I've seen it in lizards like this one -
    But that would need the octo to be losing arms almost constantly and the same fault happening each time, would she even survive so many injuries?
    The thing I liked about the nine armed one is that it's all regular, humans with extra fingers or toes for example often have one that isn't quite right, but all the 9 arms seem perfectly normal, I'm not sure what that says, but it's just pretty cool.
     

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  9. Level_Head

    Level_Head Vampyroteuthis Registered

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    The ninth arm can actually be seen to be split, right at the base. To the lower left in the image.
     
  10. Tintenfisch

    Tintenfisch Architeuthis Staff Member Moderator

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    Yes, the 'ninth' arm is a branch of the arm to which the finger is pointing. Note that its suckers do not extend in toward the beak in the same way as those on the eight true arms.
     

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