[Octopus]: Octane - O. Hummelincki (filosus)

Discussion in 'Cephalopod Journals' started by DWhatley, Jan 22, 2008.

  1. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    As you can tell from the title (thanks Simple for a quick cut and paste :wink:), I have decided that Octane is a mature adult, likely female and possibly after egg hatching :cry:. I am afraid I am joining AM and BigPapa (and others) with this one as it is immediately receptive to attention and will come up to a finger slowly stroked on the glass as if to have her mantle rubbed, eats directly from my hand, shows a wide variety of patterning and color variation and is adorable. The rest, unfortunately, is sooo sad. She has the tip of an arm recently missing (I fear she removed it), she is showing serious corkscrew on the arms and is wandering to and fro on the glass. I fell in love opening the box so I already know the heartache that will follow shortly.

    Here are some of her first day pictures with some of the identifing features. I was hoping vulgaris (and trying to ignore the corkscrew) most of the day until I offered her food on a stick and her eye spot literally glowed. Later, when I reviewed the pictures, I saw it clearly and you should see it in the first of the pictures that follow:
     

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  2. monty

    monty Colossal Squid Staff Member Supporter

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    Yup, she certainly looks like other pics of hummelincki-- sorry to hear about the corkscrew :sad: but it sounds like she's happy to join you for a brief time, at least...
     
  3. simple

    simple Vampyroteuthis Registered

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    Hopefully she is able to continue for a while longer, and give you more time with her. Just wondering, do O. Hummelincki produce large eggs or small eggs?
     
  4. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Unfortunately, they are a small egg species. They are so terrific at this stage that it is a real shame as I think they would be popular pets if they could be tank bred.
     
  5. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Observation on corkscrew arms

    We elected to put a red night light on Octane's tank (I really need to post about this night light on the tank forum if I can find another like it - totally forgot that it will do a full red set of LED's if you make that selection and it was not overly expensive) and almost immediately noticed something odd, her arms were stretched completely out straight. Later, I turned on the lights over the shrimp tank (near Octane's tank, but under a stairwell) and she came over to the light and curled the arm tips again. Lights off, arms straight. The reaction was almost immediate. I have no clue what this means.

    On a less surprising note, Octane's eyes were fully open with the lights off (red light on) but are only open as slits during daylight.
     
  6. Animal Mother

    Animal Mother Architeuthis Supporter

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    Well, congrats and hope Octane's around longer than you expect.
     
  7. shipposhack

    shipposhack Haliphron Atlanticus Registered

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    Sounds like dialysis from being in the dark..
     
  8. Nancy

    Nancy Titanites Staff Member Moderator

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    Congratulations and welcome to Octane!

    About the curled or corkscrew legs - there seem to be times when an octopus will curl its legs when it doesn't mean the end of life. So there's hope.

    Octane sounds like a real winner. It must be nice to have a slightly larger octopus for a change!

    Nancy
     
  9. monty

    monty Colossal Squid Staff Member Supporter

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    Er, I think you mean dilation... octos (and probably other cephs) are interesting in that they have two independent ways to accommodate to low light levels: expanding the pupil, and also moving pigment from the back to the front of the photoreceptive cells. I've got a paper around somewhere describing how they use pupil size for quick adjustments and pigment movement for slow ones, so often the pupil will change dramatically when the light first goes up or down, but then it will go back a bit. Of course, in the darkest conditions, they probably want to move the pigment forward and open the pupil as much as possible... in medium light, I wonder if this is a mechanism to keep the pupils small for camouflage, since the pupils are pretty much the only part of the octo that stands out...
     
  10. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Monty,
    Can you explain a bit about octo eyes. To the observer, they appear to have an upper and lower eyelid that opens and closes from top to bottom but I think I saw somewhere that this is not really the case. We have also noticed that Octane's "lids" can change color, at least from white to orangeish.

    Nancy,
    I am not sure if it is so much the size (Neal has been pushing for a larger one for a while now) or just the way this species interacts immediately (Neal is going to be disappointed when we have a different kind I think). Unfortunately, it may well be that they are only this interactive when they are aged and not as "friendly" as juveniles. I have not seen old posts on these, do you recall if anyone has had a juvenile?

    Neal keeps trying to make the arms not be cork screwing and only curled. We have agreed to just enjoy her while we can (Neal also insists on "him" and says a female bit off the end of the missing arm while he was trying to mate - Lorena Bobbitt octo syndrome. It doesn't matter that it is the 1st arm and not the third). Part of his insistence probably comes from the fact that our male Mercs have been far more interactive than our females. I did notice that Octane seemed to curl one arm more than the others for a short time tonight but later the curled up arm (not the tip) switched so I am still watching to see if I can detect a difference in a tip that I may have missed. The arms themselves are interesting as the web and arms at the base are very very thick. So thick that the web looks more like a body part (I saw her spread out the web tonight but failed to grab the camera - really neat). The arms taper very quickly and appear short, compared to the mantle but I think the thick webbing exagerates the short arm look.

    We did see a lot of sucker shedding in the bag and for the first 24 hours. I would be overjoyed to think this was the cause of the arm behavior but Octane's mantle is between 2 and 2.5 inches and she stays on the wall rather than climbing about on the LR so, sadly, I feel comfortable with saying she is a full grown adult.

    She has chosen an end section of the tank that is her home (at least for now) and wanders about 6 inches on the black, back wall (rarely going behind the live rock) and the full 12" of the side wall but will not turn the corner to walk on the front of the tank. I don't think it is the lighting since she will come out to investigate if I turn the shrimp lights on (close to her clear, side wall) but she seems to be uncomfortable with going to the front of the tank. I have tried coaxing her by stroking the glass (she will come to my finger if it is within her territory) and she will touch the front side as if considering it but will not cross the corner.
     
  11. monty

    monty Colossal Squid Staff Member Supporter

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    I'll have to dig up the paper, but I'm pretty sure that the iris does have chromatophores, so it can change colors. I don't remember what the musculature of the pupil is like, though.
     
  12. sorseress

    sorseress Colossal Squid Supporter

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    :welcome: Octane :octopus2:
     
  13. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    High on Octane

    I went on an octo-hunt this AM because she was not in her usual quadrant (usual for 2 days :wink:) and I was paniced! I finally located her suckers showing from behind the live rock. Her arms were fully white on the sucker side and I believe she was sleeping. Normally the underside stays an oranish color, regardless of the rest of her coloring.

    Anyone who has seen the Marginaris (Coconut Octopus) film clip where the little guy was walking around with his house, would see the similarity in the way Octane walks across the sand. The movement is very different from the Mercatois. Neal wanted me to get a video of it and, of course, she would not move so he, ummm, encouraged her a little but you can get an idea of what I am trying to describe from the video. She almost looks like a cuttlefish.

    Note, the sound is out on my computer so I have no idea what we were saying :oops:

    [​IMG]

    Here are a couple of shots of her posing as a rock and one that does not do justice to her magnificent web flair and purple blue eye spot.
     

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  14. Animal Mother

    Animal Mother Architeuthis Supporter

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  15. sorseress

    sorseress Colossal Squid Supporter

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    Very cool octo!
     
  16. monty

    monty Colossal Squid Staff Member Supporter

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    yup. great video..."'why won't you just believe I'm a rock, and start ignoring me?"

    Octane has an interesting look; the spots look more bimac-like than other pics of hummelincki I've seen, but it sure doesn't move like a bimac, and the coloring other than the eyespots seems differently mottled. The closest thing I could find flipping through Norman is what he calls the Octopus aegina complex, particularly the one pic of Octopus fangsiao from near Japan (although there's only one picture, it looks like your pic where octane is showing eyespots and spreading webbing against the glass.)
     
  17. Animal Mother

    Animal Mother Architeuthis Supporter

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    Just got to watch the video. Tuvalu would shine her eyespots the brightest whenever she was white with the black markings like in that picture. She would "puff up", turn white and flash when I was approaching the tank. I never could get a good picture of her doing it. Wish I'd gone with white sand!
     
  18. Nancy

    Nancy Titanites Staff Member Moderator

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    Good video, D!

    Individual octopuses are different, and I don't think you can say because your octopus is interactive it's at the end of it's life. It's probably older than 3 or 4 months, though.

    Females can be quite interactive, too, not just males.

    In the future I see you and Neal with many,many octopuses!

    Nancy
     
  19. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Nancy, one (or 12, whats a few numbers) octo at a time 8-). (I can't believe I may have 12 octopuses, that thought just occurred to me :roll:). Neal only takes a casual interest in the Mercs (and only in Sisturus and Medusa) but he it totally enthralled with Octane. Our skimmer came in today and Neal set it up in spite of our water disaster (frozen water pipe that broke). The hinge and latches for the top are due in Monday so her tank conversion is almost complete and likely to be an octo tank for a long time.

    Monty, I am fairly certain of Octane's identity. I know the diver that caught her and that she came from a shallow reef (not sure if Gulf or Atlantic side but I think Gulf side) in the keys in about 4' of water. I will take a picture (if she will hold the look long enough for me to photograph it) of that very dull octo Norman shows for the Caribbean 2-spot. The range of looks is simply outstanding and, at least at this point, changes often.

    AM, I am glad you mentioned the "blinking" as I was commenting on it tonight. Octane will "blink" even in brown mode but you have to be paying attention to catch it and I notice it most when she is against the black back of the tank. It looks a lot like the squid or cuttle blink and I don't know if this is common with the medium sized octos in general or not as I don't think even you mentioned it before. I really want a GOOD picture of that white spread out web and glowing eye spot but I was lucky to get even one in focus and out of color picture this time.

    She ate two of her snails! They were supposed to be clean-up crew (and have been residence of the tank for a long time)and I forgot that larger octos liked to eat them since my Mercs leave them alone (for the most part). We are still trying to get a feel for how much to feed her. She takes quite awhile to eat a crab. The night she was only found one crab is when I found the cleaned out snail shells so we are trying two now. The first one she takes at the top of the tank by hand, a second she will eat but waits for it to be dropped, then pounces on it IF she has finished the first one. She does not leave much for the clean up crew.

    Lynn sent several mithrax with Octane so I have been giving her both the mithrax and fiddlers. I hate feeding mithrax and one red one managed to escape her attention for 48 hours and climbed up on the pump. I took a picture of it (don't know if is postable yet), rescued it and stuck it in another, safer tank :roll:.


    Octane seems to be settling in and now "goes to bed" when her lights go out (and I start to feed Sisturus and Medusa). Initially, she would come over to the edge of her tank when I would turn on the light to retrieve shrimp for the nocturnals but now when she goes behind the LR, she seems to stay put for the night. This morning's octo hunt found her in the same place as my panic morning so I hope this means she is comfortable with her digs. She is out in the open when we come home and stays visible until lights out. I don't know what time she awakens yet as this will be our first weekend with her.
     
  20. Animal Mother

    Animal Mother Architeuthis Supporter

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    D, this is my best eyespot recording of Tuvalu http://www.youtube.com/watch?v=JZ903cFlmlo Really wish I'd had a better quality camera to work with but I guess something is better than nothing. At first, you can't see the eyespot at all, and then when I get close to her FLASH!
     

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