Sepioloidea - something new

Discussion in 'Physiology and Biology' started by Steve O'Shea, Jan 14, 2005.

  1. Steve O'Shea

    Steve O'Shea Colossal Squid Supporter

    Joined:
    Nov 19, 2002
    Messages:
    4,668
    Likes Received:
    17
    Splitting thread to start a new one. Jean managed to secure some of these eggs for us through a jolly good lad down Otago called Peter Bell; they arrived yesterday. I'll post pics of the eggs shortly (have yet to take them).

    Thanks a million Jean and Peter!!
     
  2. Steve O'Shea

    Steve O'Shea Colossal Squid Supporter

    Joined:
    Nov 19, 2002
    Messages:
    4,668
    Likes Received:
    17
    And here we have them. The eggs are quite tiny, individually cemented to the underside of rock slabs (naturally), but here plonked into a tank underside up (no predators to concern ourselves with in this tank).

    The tops of the slabs are covered in coralline algae (paint), the undersides in bryozoans and serpulid polychaete tubes, so obviously they have been collected at quite shallow depth in quite a rough area, not subject to much sediment deposition (I haven't precise details yet).

    In the lower pic it looks like two separate squid have deposited these egg capsules (one cluster is quite dirty coloured, the other, more recently deposited, white).

    We're heading off for a dive tomorrow to see if we can find eggs in similar habitats up here (quite some distance from where these eggs were collected, Otago).
     

    Attached Files:

  3. cthulhu77

    cthulhu77 Titanites Supporter

    Joined:
    Mar 15, 2003
    Messages:
    6,642
    Likes Received:
    2
    AWESOME !!!! More pics as progress continues, please!!!
    can't wait till the little buggers hatch!
     
  4. joel_ang

    joel_ang Architeuthis Registered

    Joined:
    May 15, 2003
    Messages:
    2,028
    Likes Received:
    0
    Lucky you!!! any idea what species they are?
     
  5. Steve O'Shea

    Steve O'Shea Colossal Squid Supporter

    Joined:
    Nov 19, 2002
    Messages:
    4,668
    Likes Received:
    17
    I don't have a scanner handy, sorry, so have just photographed, cut, paste and captioned this composite image.

    There are three species in the genus Sepioloidea in New Zealand waters; two of them are new species. Two species occur in coastal waters, and one on the continental shelf and slope (this a large-bodied species, whereas the two coastal species are quite small).

    To differentiate the two coastal species you need only look at the tentacle club; there are major differences in the number and relative sizes of the club suckers (in S. pacifica there are some quite large suckers, in the new species they are all quite minute). I don't know what species we have here (yet) - we'll have to keep them going. The differences in tentacle-club sucker size probably (I stress) indicate quite a difference in diet between the two species. We'll soon find out. I've kept the 'new species' alive for 75 days before (caught as adults), then released them (and kicked myself ever since) - that was about 6 years ago now. However, I've never tried rearing the young, and am looking forward to the challenge.

    Sorry for the quality of the following image. We'll get something better online one of these days (when I finally get around to completing the manuscript)
    1) Sepioloidea pacifica
    2) Sepioloidea n.sp.
    3) S. pacifica tentacle club
    4) S. n.sp. tentacle club
    5) S. n.sp., lateral view of hectocotylus
    6) S. pacifica, hectocotylus
    7) S. n.sp. hectocotylus
     

    Attached Files:

  6. Steve O'Shea

    Steve O'Shea Colossal Squid Supporter

    Joined:
    Nov 19, 2002
    Messages:
    4,668
    Likes Received:
    17
    Here are a couple of pics from the Gallery, courtesy of Peter Batson. The first, paralarval Sepioloidea sp., the second, likely S. pacifica, an adult buried in the sand.
     

    Attached Files:

  7. chrono_war01

    chrono_war01 Colossal Squid Supporter

    Joined:
    Oct 7, 2004
    Messages:
    2,580
    Likes Received:
    4
    Cute... :lol: I like squid...But the pics do look funny, espeicaslly the one in the sand..
     
  8. erich orser

    erich orser Architeuthis Supporter Registered

    Joined:
    Nov 29, 2004
    Messages:
    1,632
    Likes Received:
    0
    Ahhhh...

    They look adorably cute, just like all babies.
     
  9. chrono_war01

    chrono_war01 Colossal Squid Supporter

    Joined:
    Oct 7, 2004
    Messages:
    2,580
    Likes Received:
    4
    Great~

    They also have a face that only a mother could love...how cute. reminds me about the movie alien...
     
  10. Jean

    Jean Colossal Squid Supporter

    Joined:
    Nov 19, 2002
    Messages:
    4,218
    Likes Received:
    138
    Location:
    Dunedin, New Zealand
    Glad they got there in one piece! The next batch are staying here!

    Cheers

    J
     
  11. Colin

    Colin Colossal Squid Supporter

    Joined:
    Nov 14, 2002
    Messages:
    3,986
    Likes Received:
    6
    This should be fun :)
     
  12. chrono_war01

    chrono_war01 Colossal Squid Supporter

    Joined:
    Oct 7, 2004
    Messages:
    2,580
    Likes Received:
    4
    aw...

    This should be fun, and interesting, I hope I could see more.
     

Share This Page