Agressive Squid Questions

Discussion in 'Physiology and Biology' started by OctopusV, Feb 8, 2004.

  1. OctopusV

    OctopusV GPO Registered

    Joined:
    Nov 8, 2003
    Messages:
    169
    Likes Received:
    0
    I have two questions about the two more agressive squids.

    First, does the Humbolt Squid (D. gigas) lack tentacles? I've recently noticed that I've seen the eight arms on the thing, but never any tentacles.



    Second, how does the swivel motion on the Colossal Squid's (M. hamiltoni) arm-mounted claws work? In last year's newscast about a Mesonychoteuthis carcass, I saw Steve (or Kat) stick a finger towards one of the claws, and push it in a circular direction so that it made it seem that the squid can swivel it's claws, I'd like to know how that's structured and how that swiveling works.

    I've been racking my brain and searching the 'net, and haven't found a thing that helps answer these two questions.
     
  2. um...

    um... Architeuthis Supporter

    Joined:
    Sep 5, 2003
    Messages:
    1,968
    Likes Received:
    0
    Re: Agressive Squid Questions

    A photo of D. gigas, showing tentacles. (second squid)
     
  3. um...

    um... Architeuthis Supporter

    Joined:
    Sep 5, 2003
    Messages:
    1,968
    Likes Received:
    0
  4. Clem

    Clem Architeuthis Supporter Registered

    Joined:
    Apr 6, 2003
    Messages:
    1,839
    Likes Received:
    49
    Hello OctopusV,

    Great questions. I don't think it's yet been determined how M. hamiltoni utilizes the swivels the claws are set into. It's probably unlikely that it can control each swivel-claw independently, since it would really have no cause to do so. Perhaps it can "reset" the claws so that all the recurved claw-points are oriented in one direction, pointing towards the head, before the tentacles shoot out to grasp prey. Or, maybe the tentacular claws lack muscular contols, and are spun into the proper configuration by the movement of water shooting past the manus (the "hand" at the end of the tentacle)?

    :mesonych:

    Clem
     
  5. Burstsovenergy24

    Burstsovenergy24 Larger Pacific Striped Octopus Supporter

    Joined:
    Jul 31, 2003
    Messages:
    1,312
    Likes Received:
    0
    Cool thinks. 8)

    You must have thought about that for a while eh, Clem? :heee:
     
  6. WhiteKiboko

    WhiteKiboko Colossal Squid Supporter Registered

    Joined:
    Feb 15, 2003
    Messages:
    2,702
    Likes Received:
    15
    Location:
    Charleston
    that was from another thread last spring after i asked if the squid had direct control over the rotation....
     

Share This Page