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Alex Gleason (alex@gleasonator.com)'s status on Wednesday, 15-Mar-2023 13:32:54 JST Alex Gleason

https://theoatmeal.com/comics/mantis_shrimp
In conversation Wednesday, 15-Mar-2023 13:32:54 JST from gleasonator.com permalink
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  Why the mantis shrimp is my new favorite animal - The Oatmeal
  
  from @oatmeal
  
  A comic about a glorious undersea creature.
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  Punished Crab (rustycrab@sleepy.cafe)'s status on Wednesday, 15-Mar-2023 14:35:04 JST Punished Crab
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  @alex :shraggot:
  
  In conversation Wednesday, 15-Mar-2023 14:35:04 JST permalink
  
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  Alex Gleason (alex@gleasonator.com)'s status on Wednesday, 15-Mar-2023 15:11:35 JST Alex Gleason
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  - mittimithai
  @mittimithai What about the butterfly?
  
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  mittimithai (mittimithai@neenster.org)'s status on Wednesday, 15-Mar-2023 15:11:36 JST mittimithai
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  Turns out, as best as anyone can tell, the mantis shrimp doesn't seem to use those extra receptor types for better color discrimination.
  https://www.nature.com/articles/nature.2014.14578
  In conversation Wednesday, 15-Mar-2023 15:11:36 JST permalink
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    Mantis shrimp's super colour vision debunked - Nature
    
    from Morrison, Jessica
    
    One of the animal kingdom’s most complex eyes is really quite simple.
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  Alex Gleason (alex@gleasonator.com)'s status on Wednesday, 15-Mar-2023 15:12:07 JST Alex Gleason
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  - mittimithai
  @mittimithai Bigger question is whether anything can see more than 3 colors
  
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  mittimithai (mittimithai@neenster.org)'s status on Wednesday, 15-Mar-2023 15:18:51 JST mittimithai
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  Most of us are trichromats (3 receptors, but we can, of course see many colors). There is one report of human tetrachromat:
  
  Not easy to test for. Has to be a woman since the color receptors are on the X chromosome.
  https://jov.arvojournals.org/article.aspx?articleid=2191517
  
  Hard to tell with things like butterflies. They can sense UV, which we can't...but I don't think anyone has been able to coax them into demonstrating super high color discrimination:
  https://kids.frontiersin.org/articles/10.3389/frym.2017.00070
  In conversation Wednesday, 15-Mar-2023 15:18:51 JST permalink
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    The dimensionality of color vision in carriers of anomalous trichromacy | JOV | ARVO Journals
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    The More, the Better? A Butterfly with 15 Kinds of Light Sensors in Its Eye
    
    Colors are everywhere in nature, and they communicate useful information. Flowers use colors to advertise that they have nectar, fruits change color when they are ripe, and birds and butterflies use their colorful wings to find mates or to startle enemies. To use this information, animals must be able to see colors. Humans have “trichromatic” color vision, meaning that all the colors we perceive can be produced by mixing three primary colors—red, green, and blue. This is because we have three kinds of light-sensing cells in our eyes, one kind sensitive to red, one to green, and one to blue light. Different species have different types of light-sensing cells. Honey bees also have three types, but they have cells that sense ultraviolet light instead of red light. Butterflies typically have 6 or more types of light-sensing cells, but we found one swallowtail species that has at least 15, which is the record among insects. In this article, we discuss how the world might look to a butterfly with such a complex eye.
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