Any ideas on ID? Pelagic species from 2000 NOAA trawl

Discussion in 'Physiology and Biology' started by OB, Apr 1, 2007.

  1. OB

    OB Colossal Squid Staff Member Moderator

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    This one from the Bering Sea has been puzzling me for some time...

    "Scientists are uncertain of the specific identity of this rarely caught pelagic Octopod. The yellow ring occurs only in females and is thought to be commonly eaten by Dalls' Porpoise. They are rarely ever caught in standard survey trawls."
     
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  2. tonmo

    tonmo Titanites Staff Member Webmaster Moderator

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    weird.
     
  3. Clem

    Clem Architeuthis Supporter Registered

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    :heee:
     
  4. cuttlegirl

    cuttlegirl Colossal Squid Supporter Registered

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    I found a reference to the family Bolitaenidae.
    http://www.environment.gov.au/cgi-bin/abrs/fauna/details.pl?pstrVol=CEPHALOPODA;pstrTaxa=64;pstrChecklistMode=2

    Will search some more...

    Here you go - http://tolweb.org/Bolitaenidae/20193

    Your photo looks like Japetella diaphana
     
  5. Clem

    Clem Architeuthis Supporter Registered

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    Cuttlegirl, looks like you nailed it. Good job!
     
  6. OB

    OB Colossal Squid Staff Member Moderator

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    Hear, hear!!!! Japetella diaphana

    PS: Adam, that is SO funny :grin:
     
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  7. Steve O'Shea

    Steve O'Shea Colossal Squid Supporter

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    I've never seen such a large one! Most peculiar indeed (we get the pelagic juveniles here (NZ), but they're certanly not common).
     
  8. main_board

    main_board Vampyroteuthis Supporter

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    The ID seems to be definitive. Good job cuttlegirl! I was thinking the same thing as Steve, though. TolWeb says they're small octopods, with the largest specimen being 85 mm ML. Now it's difficult to get much in that image for a size reference, but I was thinking that that orange thing top right was a glove of some sort. That would make this a considerably bigger specimen. But I'm not really sure.
    Thanks for posting this. Its a really cool species that I hadn't a clue about!

    Cheers!
     
  9. OB

    OB Colossal Squid Staff Member Moderator

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    The arms in the specimen held in the pic above appear to be around 150 mm or so and tolweb states that the arms are "considerably shorter" than the mantle; a fact collaborated by the photographs of young specimens included in the entry. Now if a 150 mm + mantle would be hiding underneath the arms in the palm of that gloved hand, I'd be surprised. I'd be a lot less surprised if it turned out that the arm mantle ratio changes over time, with the arms getting longer towards maturity. This appears to be the case in many cephalopods, so why not this one?
     
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  10. DrBatty

    DrBatty GPO Supporter

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    HAHAHAHAHAHAHAHAHA that was great. :grin:
     
  11. OB

    OB Colossal Squid Staff Member Moderator

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    And the kitchen sink...
     
  12. Michael Blue

    Michael Blue Wonderpus Registered

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    :lol: :lol:
     

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