Abdopus aculeatus mating paper out

Discussion in 'Physiology and Biology' started by mucktopus, Feb 24, 2008.

  1. mucktopus

    mucktopus Haliphron Atlanticus Staff Member Moderator

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    It's been a long haul getting this beast out, but we finally got it through.

    "Mating behavior of Abdopus aculeatus (d’Orbigny 1834) (Cephalopoda: Octopodidae) in the wild"

    http://dx.doi.org/10.1007/s00227-008-0930-2

    take care,
    Mucktopus, Neogonodactylus, and Farnis
     
  2. Nancy

    Nancy Titanites Staff Member Moderator

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    Congratulations to all three of you! Read the abstract, very interesting.

    Nancy
     
  3. shipposhack

    shipposhack Haliphron Atlanticus Registered

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    Good abstract. It seems like A. aculeatus may be more social than the typical octopus which may mean they will more readily live with each other in a closed environment. What are the characteristics that separate a male from a female? Do males curl their hectocotylized arm, have enlarged suckers, different patternings (aside from the mentioned black and white striped)?

    Thanks!
     
  4. monty

    monty Colossal Squid Staff Member Supporter

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    congrats!
     
  5. Steve O'Shea

    Steve O'Shea Colossal Squid Supporter

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    :thumbsup:
     
  6. Architeuthoceras

    Architeuthoceras Architeuthis Staff Member Moderator

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    Kool! :notworth:
     
  7. Taollan

    Taollan Vampyroteuthis Supporter

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    I just got done reading it. Very good work. Congratulations :cheers:
     
  8. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Mucktopus,
    You mentioned male-male aggression in the abstract but did not specify (I can't read the full article but would like to ...) if this led to death or dismemberment. With my sibbling Mercs, the two males have live comfortably together, one tank houses no female, the other contained one (she disappeared after brooding, producing young and mating a second time). The level of encounter between the males can not be classified as highly aggressive in either case and both sets of males are alive after 11 months. Since there is a difficulty keeping multiple octopuses in the same aquarium, could you give more information on this behavior?

    Thanks for keeping us updated on your publishing!
     
  9. mucktopus

    mucktopus Haliphron Atlanticus Staff Member Moderator

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    Males pull each others arms and strangle during fighting, and we had one case when a male was found eating arms, so aggression easily has the potential to injure/kill. But severe injuries may be rare. Females have just as many arm injuries as males even though they are far less aggressive. Thus a lot of damage may be done by predators or prey (stomatopods). That's good to know that your mercs are less aggressive. Having two male aculeatus together in a tank would be pretty risky. It's entirely possible that mercs have a totally different set of behaviors/types of competition. Ahh- to follow them in the wild would be a fun challenge!
     
  10. Thales

    Thales Colossal Squid Staff Member Moderator

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    Nice!
     
  11. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Christy,
    Somehow I don't think the Mercs will ever be observed like your aculeatus in situ ;>). Locating them and "following" them is not likely to be a problem but the night dives, red lights and trust time don't suggest good, safe thesis material. What I have found interesting is that Roy has reported much more aggression in the Mercs than I have seen in my aquarium. I suspect part of the difference is raising sibblings (possibly same age/size) together rather than putting strangers together. It appears that they may live close together in the wild (conjecture based on sellers finding them in LR in one area) and it may be that if they grow up together, regardless of relationship, they will refrain from damaging each other even over a female. If my thinking has any merit, it would suggest a social behavior and recognition ability closer to what Roy has seen in his shrimp ...
     
  12. mucktopus

    mucktopus Haliphron Atlanticus Staff Member Moderator

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    I agree- the nocturnals will be challenges for a long time- at least until UW night vision becomes much better, and rebreathers cheaper. But a girl can dream.
     
  13. Neogonodactylus

    Neogonodactylus Haliphron Atlanticus Staff Member Moderator

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    If you missed the supplemental videos that are posted on the journal website, Crissy got some great shots of males inserted.

    Roy
     
  14. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Crissy, Roy
    I noticed the mention of video and pics but could not find a non-member link. Did I miss something?
     
  15. mucktopus

    mucktopus Haliphron Atlanticus Staff Member Moderator

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    I think you have to be able to access the journal website but I'll try to post some mating footage here too. now to figure out how...
     
  16. monty

    monty Colossal Squid Staff Member Supporter

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    there's an automagic thing where if you post a youtube link it'll figure out how to embed it. If it's some video file format, though, I think you have to email it to Tony or link to a location on another site.
     
  17. mucktopus

    mucktopus Haliphron Atlanticus Staff Member Moderator

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    I just uploaded them into the video gallery of Tonmo. They're awaiting approval.
     
  18. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Tony!!! Tony!!! we are waiting on you!!!
     
  19. Neogonodactylus

    Neogonodactylus Haliphron Atlanticus Staff Member Moderator

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  20. monty

    monty Colossal Squid Staff Member Supporter

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    I get a "resource secured" message from home... I bet any computer at .berkeley.edu is allowed to get them based on a subscription... I can download them from a caltech machine, but not from home.

    Since we have permission from the authors, I temporarily stuck them here:

    http://www.gg.caltech.edu/~monty/227_2008_930_MOESM1_ESM.mpg
    http://www.gg.caltech.edu/~monty/227_2008_930_MOESM2_ESM.mpg

    until Tony gets them officially online.
     

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