Cephalopod Personality Testing

Discussion in 'Behavior and Intelligence' started by DWhatley, Apr 8, 2015.

  1. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Scientific studies have tried to isolate personality traits and apply them to cephalopods. The definition appears to be the display of individual consistent behavior to a given stimulus. If the same behavior is displayed across species, it is considered a species behavior and does not count as a personality trait.. If the animal does not continually repeat the individual behavior, it is not considered a personality trait.
     
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  2. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Octopus Studies

    HDTV reveals brainy octopus has no personality
    New Science Article discussing the below research with input from Dr. Hanlon and a video

    Video playback demonstrates episodic personality in the gloomy octopus
    R. Pronk1, D. R. Wilson, R. Harcourt1 2009

    Coleoid cephalopods, including octopuses, cuttlefish and squid, rely mainly on visual signals when interacting with conspecifics, predators and prey. Presenting visual stimuli, such as models, photographs, mirrors and live conspecifics, can thus provide insight into cephalopod behaviour. These methods, however, have limitations – mirrors and live animals lack experimental control, whereas models and photographs sacrifice motion-based information. Video playback addresses these issues by presenting controlled, moving and realistic stimuli but, to date, video playback has not been used successfully with any cephalopod. Here, we developed a video playback technique for the gloomy octopus (Octopus tetricus) that incorporated recent advances in video technology. We then used this technique to test for personality, which we defined as behavioural differences between individuals that are consistent over time and across ecologically important contexts. We captured wild octopuses and tested them on 3 separate days over a 10 day period. On each test day, subjects were presented with videos of a food item, a novel object and a conspecific. These represented a foraging, novel and threatening context, respectively. A fourth video without a moving stimulus controlled for the playback monitor itself and potential artifacts associated with video playback. Experimental stimuli evoked unambiguous and biologically appropriate responses from the subjects. Furthermore, individuals' responses to the three experimental contexts were highly correlated within a given test day. However, within a given context, individuals behaved inconsistently across the 3 test days. The reordering of ranks suggests that rather than fulfilling the criteria for personality, gloomy octopus show temporal discontinuities, and hence display episodic personality.
     
  3. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    Cuttlefish

    Consistent individual differences in the behavioural responsiveness of adult male cuttlefish (Sepia officinalis)
    Claudio Carere, Giacomo Grignani, Roberto Bonanni, Marco Della Gala, Alessandro Carlini, Dario Angeletti, Roberta Cimmaruta, Giuseppe Nascetti, Jennifer A. Mather 2015

     
  4. GPO87

    GPO87 Sepia elegans Staff Member Moderator

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    This is really cool! (Although to be honest, when I saw the topic I thought it was one of those silly online tests to tell you which cephalopod you would be... which I was equally excited about!) haha.
     
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  5. Nancy

    Nancy Titanites Staff Member Moderator

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    Didn't James Wood do an early study of octopus personality types?

    Nancy
     
  6. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    While looking for the article by @ceph, I found this one on the Cephalopod Page by David Sinn

     
  7. mucktopus

    mucktopus Haliphron Atlanticus Staff Member Moderator

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    Sinn has done some very good work in this area:

    Sinn, David L., and Natalie A. Moltschaniwskyj. "Personality traits in dumpling squid (Euprymna tasmanica): context-specific traits and their correlation with biological characteristics." Journal of Comparative Psychology 119.1 (2005): 99.

    Sinn, David L., Samuel D. Gosling, and Natalie A. Moltschaniwskyj. "Development of shy/bold behaviour in squid: context-specific phenotypes associated with developmental plasticity." Animal Behaviour 75.2 (2008): 433-442.

    Sinn, David L., et al. "Are behavioral syndromes invariant? Spatiotemporal variation in shy/bold behavior in squid." Behavioral Ecology and Sociobiology64.4 (2010): 693-702.
     
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