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  1. laksiyer says:

    Absolutely gorgeous video. Not completely sure but looks like a male.

    1. Nivetha says:

      thank you soooomuchhh sisy

  2. TCIS Outreach says:

    Beautifully captured!
    Is this really the louse’s blood in its circulatory system or is it human blood in the louse’s digestive system? Insects are supposed to have an open circulatory system with hemolymph, which does not have RBCs. But in that case what is this pumping motion?
    – Jayashree

  3. laksiyer says:

    @Jayshree thats human blood. The pumping is the peristaltic motion of the insect gut.

    1. TCIS Outreach says:

      Thank you, Laks. I thought peristaltic waves should go in a single direction like ours normally do. Seems like in the short gut of the louse the liquid (blood) just sloshes back and forth till it gets digested and the water and nutrients get absorbed. Still @Nivetha, ‘circulation’ may not be the right word for it. – Jayashree

      1. Nivetha says:

        Thank you very much ,, I’m correct my mistakes Surely…

        1. TCIS Outreach says:

          Nivetha, Your excellent video taught me a few different things — a. how peristalsis happens in a louse’s gut, b. how a good visual leads to curiosity and questioning and c. how mistakes are such a great way of learning.
          Actually this one happens to be a common mistake. See also a recent post by Alex Surya on Blood circulation in ixodae (tick) https://microcosmos.foldscope.com/?p=34981 . Best, Jayashree

          1. Nivetha says:

            Thank you sir,im very intrested for working this foldscope ,in this foldscope increased my curiosity sir

  4. Manu Prakash says:

    That is an incredible video @nivetha. Fantastic work.. it would be wonderful to image them for long to really see how long the process of digestion really takes. You can set it up as a time lapse and image for a couple of hours; say a picture a minute.

    Beautiful work.

    1. Nivetha says:

      Thank you sir,

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