I have to admit that this time I have no idea which way to look...
Thank you very much for any suggestion, however small!
What are these nice freshwater ciliates?
What are these nice freshwater ciliates?
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Re: What are these nice freshwater ciliates?
The first one appears to be the fragment of a hypotrich (unless you find a whole population of them, in which case we need to look more closely ). It is moving in a way that looks unnatural, to me, so I think it is a damaged organism and not a recent divider.
The second one appears to be a heterotrich. The arrangement of membranelles and location of the CV suggests a swimming Stentor. However, the creature is completely acontractile, and the cortex seems oddly stiff and irregular. It does not look like a healthy specimen. So, I would suspect a Stentor that has come into contact with a chemical or pathogen that has affected its cortex and myonemes.
The second one appears to be a heterotrich. The arrangement of membranelles and location of the CV suggests a swimming Stentor. However, the creature is completely acontractile, and the cortex seems oddly stiff and irregular. It does not look like a healthy specimen. So, I would suspect a Stentor that has come into contact with a chemical or pathogen that has affected its cortex and myonemes.
Re: What are these nice freshwater ciliates?
Thank you very much for taking your time to watch and analyze my videos, Bruce.
Your considerations are very interesting to me. Regarding the first video, I have not found more critters like that. At first, I thought it could be a Hypotrich, later I thought of Lembadion and, finally, I returned to the Hypotrich hypothesis, but I was unable to identify even the genus. It is very plausible that it could be a teratological specimen. In fact, it is common to see deformed or monstrous Hypotrichs. It is a pity, because it was a very nice bug to be a new species!
As for the second, I have not found other similar organisms either, but I did observe at the time an important population of Stentor roeseli that, little by little, gave way to a population of Stentor coeruleus.
It is always worth asking. Thank you!
Your considerations are very interesting to me. Regarding the first video, I have not found more critters like that. At first, I thought it could be a Hypotrich, later I thought of Lembadion and, finally, I returned to the Hypotrich hypothesis, but I was unable to identify even the genus. It is very plausible that it could be a teratological specimen. In fact, it is common to see deformed or monstrous Hypotrichs. It is a pity, because it was a very nice bug to be a new species!
As for the second, I have not found other similar organisms either, but I did observe at the time an important population of Stentor roeseli that, little by little, gave way to a population of Stentor coeruleus.
It is always worth asking. Thank you!
My own Micrographia:
https://www.youtube.com/channel/UC7Eu6v ... wIznWeiLIw
https://www.tiktok.com/@el.geologo.moderno
Meet me on TV:
https://youtu.be/BgWoG8UYrjo (Spanish with transcrit and subtitles)
https://www.youtube.com/channel/UC7Eu6v ... wIznWeiLIw
https://www.tiktok.com/@el.geologo.moderno
Meet me on TV:
https://youtu.be/BgWoG8UYrjo (Spanish with transcrit and subtitles)