Need Help to ID

[Tom]

Any help would be appreciated.
Thank you.
https://vimeo.com/463217508

[micro]

I think thats algae if you mean the 2nd microbe in the video

[Tom]

I need help in identifying all of them. Also what are those little things annoying the first specimen and what are they doing. Also why is there debris coming from behind another. The last specimen is that a tardigrade?

[janvangastel]

I will give it a try. The video has not enough information - at least not for me - to ID to the species level.

1. Rotifer
2. Algae, looks like a volvox species, but I am not sure.
3. Looks like an euglenas species.
4. A flatworm.
5 and 6. Cyclops
7. Ciliate: Paramecium. Not clear which species.
8. The larger ones are ciliates (don't know which species), the smaller ones are probably flagellates.
9. Lobose amoebe.
10. Rotifer, probably a bdelloid rotifer.

[Tom]

Thank you very much Janvangastel

Tom

[micro]

Those are Halteria bumping into the rotifer. They just jump around like that.

[Bruce Taylor]

Covering some of the same ground as Jan (and keeping in mind that the only group I pay close attention to is Ciliophora)...

1. A monogonontan rotifer (Lepadella, maybe)
2. A colonial green alga (Pandorina, I think)
3. Euglena mutabilis (certainly)
4. A catenulid flatworm (Stenostomum, maybe)
5. A copepod in Cyclopidae
6. Paramecium (species is impossible to determine from this footage)
7. Tetrahymena (T. pyriformis, possibly)
8. An amoebozoan (pseudopod formation looks vaguely eruptive, but I don't think it's a heterolobosean amoeboid)
9. A bdelloid rotifer

[actinophrys]

Some nice finds here.

1. is actually a Lecane, since the lorica opens on the sides and the foot is a single spike, not Lepadella which have an annulated foot in a notch.
2. is a colonial green algae, but seems to me loosely packed for Pandorina, and I think is more likely Eudorina or Yamagishiella.
The last does not quite look or move like a bdelloid to me, and I think is another monogonont rotifer, one of various more worm-like kinds such as Notommata (I don't know them well).

Otherwise I am inclined to agree with Bruce and janvangastel.

[Bruce Taylor]

Thanks, Josh! One of these days I should try to learn something about algae & rotifers.