Didinium nasulum ciliate...video

fpelectronica · Post by **fpelectronica** » Sat Oct 30, 2010 1:34 am

Hello
Didinium Nasulum is a very fast ciliate, rarely standing still,
Predator feeds mainly on paramecia to which absorbs peak through extremely expandable
Size 80-150um
Francisco

http://www.youtube.com/watch?v=M8D3s0gDOas

Mitch640 · Post by **Mitch640** » Sat Oct 30, 2010 4:07 am

Another excellent video Francisco. He looks quite dangerous and very alien. Your video imaging is beautiful, showing great detail.

john sp. · Post by **john sp.** » Sat Oct 30, 2010 10:26 am

Yet another very interesting video, Francisco. I'm puzzled about what the Didinium is doing. Perhaps it is in a resting phase between meals. It almost appears to be filter-feeding, but I don't think these are capable of that. I've not had the opportunity to observe this protozoa directly; so, I can only go on what I've read and seen pictured.

I found it amusing that another spinning protozoa, Urocentrum, put in a brief appearance alongside the Didinium. (At least, I think that might have been Urocentrum.)

Thanks again for sharing what you find.

John

fpelectronica · Post by **fpelectronica** » Sat Oct 30, 2010 11:14 am

Thanks Mitch and John
Mitch, it is indeed dangerous, but only for ciliates, especially Paramecium
Jhon, Didinium is a large predator capable of pulling a paramecium, it's very fast without to scroll through what I think would be resting
Indeed, the other is a Urocemtrum turbo ciliate, ciliated also very fast.
In my opinion Didinium is faster, almost like Fernando Alonso in F1
Francisco