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Foren => Mikrofoto-Forum => Thema gestartet von: Ariel Qassis in Februar 22, 2026, 10:54:05 VORMITTAG

Titel: Mitotic spindle - holophryid ciliate
Beitrag von: Ariel Qassis in Februar 22, 2026, 10:54:05 VORMITTAG
Hello,
here is my first recording of a ciliate mitotic spindle,
enjoy
Titel: Aw: Mitotic spindle - holophryid ciliate
Beitrag von: tlansing in Februar 22, 2026, 11:34:06 VORMITTAG
Hi Ariel,

Very cool images!

Best wishes,
Tim
Titel: Aw: Mitotic spindle - holophryid ciliate
Beitrag von: Jürgen Boschert in Februar 22, 2026, 12:03:23 NACHMITTAGS
Hello Ariel,

just outstanding, thanks!
Titel: Aw: Mitotic spindle - holophryid ciliate
Beitrag von: Spectrum in Februar 22, 2026, 12:55:41 NACHMITTAGS
Hello Ariel,
Pushing the boundaries even farther.🤩
What's next?
Greetings Holger
Titel: Aw: Mitotic spindle - holophryid ciliate
Beitrag von: Ariel Qassis in Februar 22, 2026, 17:35:49 NACHMITTAGS
Danke, Tim, Jürgen und Holger!
Titel: Aw: Mitotic spindle - holophryid ciliate
Beitrag von: anne in Februar 22, 2026, 20:54:29 NACHMITTAGS
Dear Ariel,
I have Never Seen this before!
Thanks for Sharing, absolutely great.
Best
Anne
Titel: Aw: Mitotic spindle - holophryid ciliate
Beitrag von: mikrowastl in Februar 24, 2026, 12:08:08 NACHMITTAGS
great - thank you Ariel
Titel: Aw: Mitotic spindle - holophryid ciliate
Beitrag von: Ariel Qassis in Februar 24, 2026, 22:56:18 NACHMITTAGS
Danke, Anne und Hans!
Titel: Aw: Mitotic spindle - holophryid ciliate
Beitrag von: Wes in Februar 25, 2026, 07:22:07 VORMITTAG
Hi Ariel,

This is a remarkable observation. As far as I know ciliate macronuclei divide amitotically without distinct phases and chromosomes being visible. If possible try to record the completion of the division process and perhaps try to get in contact with someone who is involved with ciliates in a professional academic manner to evaluate these observations. Once again, well done for this extraordinary documentation.

Would you mind telling us the technical specs of your documentation? What objectives etc. were used?

Best regards,
Wes
Titel: Aw: Mitotic spindle - holophryid ciliate
Beitrag von: Spectrum in Februar 25, 2026, 07:38:01 VORMITTAG
Hello Wes, hello Ariel,
There are exceptions:
https://link.springer.com/article/10.1007/BF00283410
Greetings Holger
Titel: Aw: Mitotic spindle - holophryid ciliate
Beitrag von: rlu in Februar 25, 2026, 07:58:21 VORMITTAG
Hello Ariel,

great photo, observation!

The internet must be full of such photos, but it isn't - strange enough in relation to ciliate and other protists.

I recently came across some questions about what happens to the rest of the cell during mitosis and how the other cell organelles are replicated.

One part is the nucleoli. 'Das Kernkörperchen' seems to replicate with bubbles/vesicles instead of the mitotic spindle. Unfortunately, I don't know enough about it.

It's a really interesting topic and observation, and I hope there will be more content.

Merci
Rudolf
Titel: Aw: Mitotic spindle - holophryid ciliate
Beitrag von: Ariel Qassis in Februar 25, 2026, 23:31:02 NACHMITTAGS
Wes, Holger, und Rudolf-
Thank you for your insights.
Although the MA is usualy divides amitoticaly, I believe this one is the MI, which is known to divide mitotically.
These holophryids got an MA of over 50µm :)
If it's not the MI, then I have a wild theory-
Those holophryids in my sample are severely infected by probably microsporidia (video in my channel), which are known to cause a wide range of strange genetic phenomena :)
Anyway, Im not an expert on the subject, and couldnt find another one yet, but I keep looking.