Asking for help with identification

[Lukas]

Hi,

Here is a video with collection of first water sample this spring. I have had trouble recognizing many of the creatures. Starting at 30 seconds - what is that ? Next frame is stentor, I think. What species ? At 1.25 - ciliate - what species ? 1.50 - what is that ?

https://www.youtube.com/watch?v=cGs4wfbupek

Thanks in advance,
Lukas.

[Bruce Taylor]

Nice collection! I can help with the ciliates, but not the animals.

0:30 I don't recognize it. Possibly a rotifer? Don't know much about those.

1:10 This is a loricate peritrich ciliate in the genus Platycola.

1:29 A somewhat malformed member of the Stylonychia mytilus species complex.

1:49 Rotifer (I'm no use here!)

3:03 A very supple haptorian ciliate. It is moving like a dileptid, but is extremely flat, and I see no evidence of a mouth at the base of the proboscis, so I think it is a species of Litonotus.

3:30-4:40 or so. Stentor, as you know, in the early stages of binary fission. It seems to lack cortical pigments, and to have moniliform macronucleus, so S. muelleri is possible (but I can't rule out S. katashimai or an aposymbiotic S. polymorphus).

5:05 Frontonia angusta

5:51 An oligochaete worm (not my bailiwick!)

6:00 Copepod nauplius (can't suggest a finer ID)

[Lukas]

Hi, Bruce,

I was digging in through internet for hours without results, as I'm not experienced with identification.

Many thanks for help !

Regards,
Lukas.

[Greg Howald]

Looks like a rotifer but I gotta tell ya. That's one of the best videos I've seen in a while. Good job. Greg

[FatBassPlayer]

+1 Excellent video - keep up the good work!

[Lukas]

Hi,

A short clip again :

https://www.youtube.com/watch?v=I6b_FeUx-pM

Could someone help identifying :

1) Spiral like things at beginning. Is it some kind of bacteria ?
2) What ciliate is at 4.20 ?
3) What species of diatom is at 4.50 ?

Thanks in advance,
Lukas.

[richbart]

I think the first rotifer was synchaeta.

[Luis Carlos]

In the first video the specimen at 30 seconds is a rotifer of the genus Polyarthra