Vorticella campanula??

RogelioMoreno · Post by **RogelioMoreno** » Mon May 20, 2013 8:37 am

Is the following Vorticella campanula?

Vorticella Campanula by Rogelio Moreno G., on Flickr

Vorticella Campanula by Rogelio Moreno G., on Flickr

Rogelio

Ecki · Post by **Ecki** » Mon May 20, 2013 10:30 am

Rogelio,

Very nice. I love the last one!

Regards
Eckhard

Charles Krebs · Post by **Charles Krebs** » Mon May 20, 2013 10:36 am

Very, very nice!!

All great, first in my favorite.

pwnell · Post by **pwnell** » Mon May 20, 2013 11:07 am

I can almost see the wavelike motion of their cilia. Beautifully done.

Jacek · Post by **Jacek** » Mon May 20, 2013 11:21 am

Every your photo is poetry

Litonotus · Post by **Litonotus** » Mon May 20, 2013 12:20 pm

brilliant, especially the last one.

discomorphella · Post by **discomorphella** » Mon May 20, 2013 1:45 pm

I agree with Litonotus, final one is mind-blowing. How did you get it positioned so well?

David

Bruce Taylor · Post by **Bruce Taylor** » Mon May 20, 2013 1:57 pm

Fabulous pictures, Rogelio. I like the "top view," as well.

Certainly it has roughly the right body shape for V. campanula (baggy bell, cytoplasm full of granular matter, wide peristomial lip...although it lacks the slight constriction often seen under the lip). Looking at your pics on my laptop in a too-brightly-lit restaurant, I can't make out the shape of the macronucleus, which, in V. campanula, would be like a capital letter J, with a very long upper serif looped horizontally across the peristome (see Warren, 1986). It would also be helpful to know the size of the cell, the relative length of the stalk, and the appearance of the horizontal striations on the pellicle.

curt0909 · Post by **curt0909** » Mon May 20, 2013 5:38 pm

All great. The last one is a real beauty for me

Marek Mis · Post by **Marek Mis** » Tue May 21, 2013 2:23 am

Perfect images ! Beautiful.

Marek

RogelioMoreno · Post by **RogelioMoreno** » Tue May 21, 2013 3:55 pm

Thanks all for your comments.

Bruce, I will check if I have a picture that shows the macronucleus, I will post the length of the stalk and the size of the cell.

Rogelio

arturoag75 · Post by **arturoag75** » Tue May 21, 2013 10:43 pm

wow...last one is impressive

RogelioMoreno · Post by **RogelioMoreno** » Wed May 22, 2013 6:50 am

David, I took a lot of pictures of that view of the cell, the posted was the best. I can say that to get that view you have to wait the cell come off the stalk and wait until the cell start to spin then you can take pictures with flash.

Arturo, thank you.

Bruce, the size of the cell is around 76x83 um and the stalk length is around 300 um. I think the following pictures show the macronucleus:

Rogelio

Bruce Taylor · Post by **Bruce Taylor** » Wed May 22, 2013 3:14 pm

Hi Rogelio. That's in the size range for V. campanula, so your identification seems sound. And that "top view" really is astounding!

Here are some very useful (and freely available) guides to Vorticellids:

Warren, A. 1986. A revision of the genus Vorticella (Ciliophora: Peritrichida), Bulletin of the British Museum (Natural History) Zoology
Volume: 50 http://biostor.org/reference/39

Warren, A. 1987. A revision of the genus Pseudovorticella Foissner & Schiffmann, 1974 (Ciliophora: Peritrichida) http://www.biodiversitylibrary.org/page ... 3/mode/1up

Athough more than 25 years old, I think those are still the most comprehensive revisions of the group since Noland & Finlay, 1931. Both have good illustrations and formal descriptions of the species.

The older article is still useful, too, although the taxonomy has changed. It is behind JSTOR's paywall, but they seem to be trying out a new feature that enables users to log in and read certain items for free (and an eighty-two-year-old article certainly ought to be free!)

http://www.jstor.org/discover/10.2307/3 ... 2033755103

RogelioMoreno · Post by **RogelioMoreno** » Thu May 23, 2013 6:22 am

Bruce,

Thank you for the info.

Rogelio