News: Cuttlefish Camouflage and Colorblindedness

Discussion in 'Sepiidae' started by tonmo, Apr 22, 2006.

  1. tonmo

    tonmo Titanites Staff Member Webmaster Moderator

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  2. monty

    monty Colossal Squid Staff Member Supporter

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    Way cool! Researchers who put a link to the pdf of the article and the movies rock!

    (I have the minor gripe that the article has a logical fallacy, in that it assumes "the absence of the positive proves the negative"-- i.e. it's possible, though unlikely, that the cuttle can see the colors, but doesn't use them as criteria for choosing its pattern)

    It also has a lot of refs I didn't have for color vision experiments, including one where someone did electrophysiology on an octopus retina directly and looked at what the receptor responses actually were to different wavelengths of light!
     
  3. bathypol

    bathypol Wonderpus Registered

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    ok, so am I blind? :confused: I don't see the movies anywhere.....
     
  4. monty

    monty Colossal Squid Staff Member Supporter

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    I only saw 1 movie; click on the press release link, and scroll down to "resources: view the video (quicktime)"

    I just used plural to say all researchers who put their stuff on the web rock...

    I also just slammed my finger in the door, which makes it annoyingly hard to type. ow.
     
  5. sorseress

    sorseress Colossal Squid Supporter

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    Loved watching the cuttle change color in the blink of an eye. :cuttle:
     
  6. Stavros

    Stavros GPO Registered

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    One of my favorite questions regarding underlying behavioral mechanisms of body patterning... It's hard to believe these guys are color blind- I don't think the evidence is necessarily conclusive and recent findings with possible extra-ocular photoreceptive function show there's more to learn.
     
  7. DWhatley

    DWhatley Cthulhu Staff Member Moderator

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    An interesting test would be to see if a severed arm can still match its environment (we know it can move and change colors).
     

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