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Thread Like Summary
anthropic, azteca, catscratch, RAH
Total Likes: 8
Original Post (Thread Starter)
#553142 10/30/2022 1:14 PM
by azteca
azteca
Hello.

Hydra with Ostracods.
[Linked Image from i.ibb.co]
[Linked Image from i.ibb.co]
[Linked Image from i.ibb.co]

Fingernail clam (Sphaerium).
[Linked Image from i.ibb.co]
[Linked Image from i.ibb.co]
[Linked Image from i.ibb.co]
[Linked Image from i.ibb.co]
A+
Liked Replies
by Bill Cody
Bill Cody
The protozoans on the snails are not Vorticella. However there are other similar stalked protozoans that will look like Vortecella. Examples are Opercularia, Epistylis, Carchesium, and Campanella. The stalked protozoans on the snails I don't think are parasites. I think they are termed - commensalism or commensal organisms - a relationship between two species in which one species obtains food or other benefit from the other without causing harm or benefit to the latter. Snails are just forming a subsrtate or surface for attachment for the protozoans.

I question if the green spheres in above pics are Volvox. I cannot see the colonies with good clarity and resolution. There are several other genera of green algae that form spheres with individual cells composing the colony matrix. Sharper images would help with identification.

Have you ever found fingernail clams in stomachs of perch? I have seen snails in YP stomachs.
2 members like this
by azteca
azteca
Hello.

Thank you Mr Cody.

No I don't have Fingernail clam in the pond.
I was wondering if it would be good to put some.

Although the water is very cold 4c, there're a lot of Daphnia, but I see they are starting to make a lot of Ephippia.
[Linked Image from i.ibb.co]

I culture Bursaria truncatella with Paramecies and volvox.
A+
1 member likes this
by azteca
azteca
Hello.

Volvox algae colonies.
[Linked Image from i.ibb.co]
[Linked Image from i.ibb.co]
[Linked Image from i.ibb.co]
[Linked Image from i.ibb.co]
[Linked Image from i.ibb.co]

I don't have a microscope, the photos are taken with a magnifying glass.
A+
1 member likes this
by azteca
azteca
Hello.

Mr Cody are Vorticella who parasitizing snails.
[Linked Image from i.ibb.co]
[Linked Image from i.ibb.co]
[Linked Image from i.ibb.co]
A+
1 member likes this
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