What is a protozoan ?

Jacek · Post by **Jacek** » Sat Dec 03, 2011 12:36 am

What is a protozoan?

1 - Zeiss GF-Plan 40/0.65 [DIC]
2 - DF
3 - Olympus Plan Apo 100/1.40 [DIC]

foto: Lumix TZ8

Jacek · Post by **Jacek** » Sat Dec 03, 2011 11:19 am

YouTube compression, the image has deteriorated considerably.
Video helps somebody can help identify

http://youtu.be/8-DHKQVz3UQ

ob. 40 i 100X /DIC

Bruce Taylor · Post by **Bruce Taylor** » Sat Dec 03, 2011 2:01 pm

Superb. They're certainly Hymenostomes (lovely, clear view of the membranelles / parorals). I want to suggest Glaucoma sp., but I'm unaccustomed to seeing them in DIC.

edit to add "membranelles"...the video shows the triplets beautifully.

Jacek · Post by **Jacek** » Sat Dec 03, 2011 2:07 pm

Thank you

Mitch640 · Post by **Mitch640** » Sat Dec 03, 2011 2:31 pm

Jacek, you can turn up the compression from 360 to 720p and watch it larger if you want.

I am curious about the little mouths, are they really the cell mouth?

Jacek · Post by **Jacek** » Sat Dec 03, 2011 2:35 pm

I know, the original video is in 720p and has a much better quality than on YouTube.
Some of the films after the publication look good and this is clearly of inferior quality

I hope you are well-understood

Mitch640 · Post by **Mitch640** » Sat Dec 03, 2011 2:41 pm

Ah, I see what you mean. I don't think I ever noticed on YouTube, but have seen websites that are somehow able to turn down the quality of images at different times of day.

Bruce Taylor · Post by **Bruce Taylor** » Sat Dec 03, 2011 2:51 pm

Mitch640 wrote:I am curious about the little mouths, are they really the cell mouth?

Yes. Hymenostome ciliates like Ophryoglena, Glaucoma & Tetrahymena have a set of three membranelles on one side of the cytostome and a paroral membrane on the other.

Bruce Taylor · Post by **Bruce Taylor** » Sat Dec 03, 2011 3:46 pm

Glaucoma, as drawn by Stuart Hedley, for David Patterson:

Jacek · Post by **Jacek** » Sat Dec 03, 2011 4:24 pm

Bruce thank you very much, so it is Glaucoma sp.

Mitch640 · Post by **Mitch640** » Sat Dec 03, 2011 4:31 pm

The video was very interesting, a bunch of little heads swimming around with their mouths working.