Abdopus abaculus jetting and shifting

Discussion in 'Physiology and Biology' started by tonmo, Jul 12, 2009.

  1. tonmo

    tonmo Titanites Staff Member Webmaster Moderator

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  2. Neogonodactylus

    Neogonodactylus Haliphron Atlanticus Staff Member Moderator

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    My camera can fire at 5.5 frames/sec and if I set the strobes at 1/32 power they can keep up with the camera for 6 -8 frames. However, I rarely follow a jetting octopus or swimming stomatopod and keep them in focus for more than two or three frames, so the first three are about 200 msec apart. The last shot of the animal completely smooth and cream colored is from another sequence taken in the same session. The escape sequences are so predictable that I could stage them over and over again as long as the animal started out on a black background and jetted across white sand.

    Roy
     
  3. Steve O'Shea

    Steve O'Shea Colossal Squid Supporter

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    That is rather impressive stuff! (And now I'm convinced I'll never try and ID an octopus from a still!!)
     
  4. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Roy,
    In the last shot, is the dark spot on the mantle an indication that the octopus is female?
     
  5. mucktopus

    mucktopus Haliphron Atlanticus Staff Member Moderator

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    That's one of the brachial hearts.
     
  6. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Thanks mucktopus! I probably should have realized that but it looks so far back that I was confused (that and I am dealing with my macropus brooding - unlikely to be viable eggs and not raisable if they were - so my mind wanders in that direction).

    If Roy ever retires, I hope he continues to shoot and share photos!
     
  7. Neogonodactylus

    Neogonodactylus Haliphron Atlanticus Staff Member Moderator

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    Mucktopus is right. Besides, this animal was a male.

    Roy
     
  8. ckeiser

    ckeiser GPO Supporter

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    Absolutely amazing. So many components to those body patters (chromatic, textural, postural, etc.), that photo could be analyzed for months and still remain mysterious and inspiring.
    Many thanks Dr. Caldwell
     
  9. Colin

    Colin Colossal Squid Supporter

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    yeah, no wonder it's hard to ID them!
     

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