More on Rotifers….to be continued.

image     Most rotifers are motile.  They swim by means of their corona cilia, as we have been able to see in former posts. Others are semisessile, attaching vía their foot and intermittently swimming or creeping, similarly to leeches locomotion. Nevertheless, some rotifers live in a secreted tube.  With this post I want to share with you this fact. It amazes me that as an University student I clearly remember studying these invertebrates but never saw as much as I have been able to by means of using a foldscope and by reading you, foldscope community.


Some weeks ago, I took a fresh water sample to my students (9 th. grade) in order to make them realise it represented a whole macro/microscopic ecosystem. Our challenge was to find out which living things this sample included, to know “who they were and how did they live ” and, finally, discover who ate whom and make a food web using the photos we shot. It was a real pleasure to hear them saying…..Wow! Come and watch this…’s Beautiful!image

        Among the incredible living things we saw, there were sessile    Rotifers. I had never seen them before.  One of them seems branched (can they organise in colonies?)  and although we can no notice a mastax (pharynx hard pieces to chew food),  I believe they are wheeled animalcules. If you think our statements are wrong, please let us know. Thank you!

imageCristina Bosch

One Comment Add yours

  1. Manu Prakash says:

    Dear @Cristina – what an incredible post. I have images many many Rotifers and I am yet to stumble across the “glass” house some of them make. This is indeed a wheeled animacules.

    In one of the images; I thought I was seeing two Rotifers in one house. Also; we will soon be announcing the second phase where we will be releasing focus locking in a Folscope – but we are sending some of them to power users. Please send an email to and we should send you a second kit.

    I will ask @Laks to see if he can ID the rotifer here? @Matt?


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