Spirostomum & ???

RogelioMoreno · Post by **RogelioMoreno** » Mon Mar 12, 2012 8:03 am

Here a picture of Spirostomum and a set of pictures of a ciliate that I would like to know the ID (maybe Chilodonella?).

Spirostomum

The following set of ???

Look at the detail inside the mouth

Rogelio

Wim van Egmond · Post by **Wim van Egmond** » Mon Mar 12, 2012 8:17 am

I am not sure about Chilodonella. They ave a different shape. Perhaps a type of Nassula?

This contrast rich deep polarised DIC the organisms almost look like they are made out of metal. Keep on rocking, Rogelio!

Wim

Mitch640 · Post by **Mitch640** » Mon Mar 12, 2012 9:23 am

I love the detail in these DIC images. It's more like being there than looking at an image.

arturoag75 · Post by **arturoag75** » Mon Mar 12, 2012 11:23 am

Georgeus Shots of ciliate..impressive
Arturo

Jean-marc · Post by **Jean-marc** » Mon Mar 12, 2012 11:29 am

Very good pics,
very good details of the mouth,
and very good shot of Spirostomum, that it is not easy to take the whole part.

Jean-Marc

Bruce Taylor · Post by **Bruce Taylor** » Mon Mar 12, 2012 12:34 pm

Zosterodasys is a likely candidate. The general shape, oval macronucleus and heavily envacuolated cytoplasm are characteristic of the genus (though not unique to it). It would help if we had a clear view of the synhymenium (the ciliated "frange" girdling the cell near the mouth in certain nasse-bearing ciliates). It could also be a Nassulopsis, Chilodontopsis (unless all have been reassigned to Zosterodasys?), or even a type of Nassula, as suggested (although the last seems less likely, to me).

RogelioMoreno · Post by **RogelioMoreno** » Tue Mar 13, 2012 4:41 am

Thank you very much all for your comments.

Jean-marc, I agree with you it is not easy to take the Spirostomum complete.

Bruce, I am going to look for info about the Zosterodasys, thank you very much for your help.

Rogelio

Bruce Taylor · Post by **Bruce Taylor** » Tue Mar 13, 2012 8:12 am

RogelioMoreno wrote:Thank you very much all for your comments.

Jean-marc, I agree with you it is not easy to take the Spirostomum complete.

Bruce, I am going to look for info about the Zosterodasys, thank you very much for your help.

Rogelio

To resolve the identification below the order Synhymeniida you will need a clearer view of the surface ciliation...in particular, the synhymenium / hypostomial frange mentioned above, and any "sutures" where kineties meet.

These are beautiful images, and the cytopharyngeal basket is stunningly clear.

RogelioMoreno · Post by **RogelioMoreno** » Tue Mar 13, 2012 11:26 am

Bruce,

I will try to get images of the surface, I think there are more specimen in my sample.

Thank you very much for your comments and help.

Rogelio

RogelioMoreno · Post by **RogelioMoreno** » Sat Mar 31, 2012 4:53 pm

Bruce,

I have not found another subject; but the following are pictures of a subject that I found before the posted above.

Rogelio

Bruce Taylor · Post by **Bruce Taylor** » Sat Mar 31, 2012 6:20 pm

Hi Rogelio,

The second picture (from the new set) shows something that could be the synhymenium. However, the twisting and compression of the cell is confusing me...I can't tell what is where. If I were more experienced, I could probably unravel the puzzle.

What I was hoping to see was something like a line across the cell, in the vicinity of the oral aperture. Here's a still I took from one of Francisco's videos, which I believe to be Zosterodasys. The "frange" is very faint, but just visible...I've added arrows to identify it.

The ends of the frange do not necessarily meet at the back of the cell, but may be offset. In Nassula, the frange is partial, running from the mouth to the right of the cell (admittedly, I have great difficulty even seeing it in brightfield, with all the colourful particles inside Nassula!).

carlos.uruguay · Post by **carlos.uruguay** » Sat Mar 31, 2012 10:06 pm

Maravilloso!
Realmente.
Wonderful. really

RogelioMoreno · Post by **RogelioMoreno** » Mon Apr 02, 2012 5:04 pm

Bruce, thank you very much for the additional information.

Carlos, thank you.

Rogelio