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Where do flies go at night?

  1. Aug 24, 2013 #1
    Flies are very active during the day, but what are they up to at night? Do they find a leaf and get some shut eye?

    Furthermore, I'll ask, do insects sleep?

    For the meantime I found a little explanation here
  2. jcsd
  3. Aug 24, 2013 #2


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    Staff: Mentor

  4. Aug 24, 2013 #3
    >>"Certain members of the family Apiadae will spend the night suspended by only the grip of their jaws on a favorite plant."

    thas so cute
  5. Aug 25, 2013 #4


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    Flies apparently do sleep.

    Penn Sleep Centers Newsletter: Do Flies and Worms Sleep?
  6. Aug 25, 2013 #5


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    Well, flies don't have eyelids so they can't literally get shuteye.
    and, if they sleep, do they have dreams?
  7. Aug 25, 2013 #6


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    I'll tell 3 anecdotes.
    First of all I can confirm Evo's post for some houseflies (myself seen many times a fly stuck on a wall and not well responsive to my hands at night and only at night) although I don't know the exact name/s of the specy/ies but I know it was not a fruit fly.
    Second, not long ago I had a small fly in my house for months. It would be innactive over 90% of the time and almost totally unresponsive to my gestures. I took many photos of it. It basically became my pet until I discovered it defecated all over my walls. So I am not really sure that this fly had a 24 hours circadien cycle. I don't think this specy had, but I am not 100% sure.
    Lastly, about 10 years ago in Canada we went to the countryside house of my aunt in winter. The house was at around -20°C. Usually in summer it was full of flies. I went upstairs and plugged an electric heating device. After a few minutes I would see many flies falling off the celing over me. The flies were basically "frozen" and they unfrozen quickly. After another few minutes the house was invaded by flies all around as if it was summer. I am not sure what were their state of "mind" when frozen. Nor do I know if they had their usual 24 hours circadien cycles when frozen.
  8. Aug 25, 2013 #7


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    There's research reporting that their "cns" participates in memory consolidation during sleep [1], similar to what some think is going on with humans. Of course, others have demonstrated skepticism in humans [2].

    [1] PLOS ONE: Fatty-Acid Binding Proteins Modulate Sleep and Enhance Long-Term Memory Consolidation in Drosophila
    [2] Neuron - Memory Consolidation in Sleep

    Of course, it's impossible to know for sure what their subjective experience is like.
  9. Aug 26, 2013 #8
    Flys Chill at Night.

    Where flies go out at night depends on if they have been trapped indoors or not. The life span is short like 2-3 weeks. If they are inside they go crazy looking for the great outdoors. Flies don't like being trapped in human occupied places. I think our brain waves disturb theirs. If they are outside they are flying looking around for nourishment. They rest and go into deep meditative periods because they know their life is short so they are preparing for the big leap ahead.

    You asked what if insects sleep. They rest. Do people sleep or do they rest? Is sleep real? Some people take deep periods of rest and they don't call it sleep. Some people will call it sleep as they dream heavily and call it sleep.

    I don't think insects sleep. I think they take rest and move on. They question to ask: do insects have a soul. for that matter do people have a soul <hums twilight zone music>?
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