Diatomée a identifier.

[vasselle]

Bonjour a tous
Là nuit dernière en regardant mon prélèvement eau de rivière je suis tomber sur se spécimen que j'avais jamais vue auparavant.
Après recherche j'ai trouver comme nom Eunotia pectinalis.
Mes comme je suis pas sure si quelqu'un pouvais me donner confirmation.
Montage glycérine liquide.
Voici les photos du spécimen.

Plan 40 X fond clair.

905_filtered (Copier).jpg (227.09 KiB) Viewed 7402 times

Plan 40 X éclairage oblique.

906_filtered (Copier).jpg (212.08 KiB) Viewed 7402 times

Plan 40 X éclairage oblique.

907_filtered (Copier).jpg (208.32 KiB) Viewed 7402 times

Plan 40 X éclairage oblique.

909_filtered (Copier).jpg (199.06 KiB) Viewed 7402 times

Merci avance
Cordialement seb.

[gekko]

Excellent images (sorry, I can't help with identification).

[mrsonchus]

I so sorry but I can't help with identification. But what superb images these are - keep up the good work and thanks for posting.

[vasselle]

Bonjour a tous
Merci beaucoup.
Des que j'aurais le temps je ferais autre photos .
Cordialement seb

[microbe fanatic]

Hi, I am using a translator so sorry if this does not make any sense! I think it is a red filamentous algae. I believe those circles are chloroplasts.

Salut, Je utilise un traducteur afin désolé si cela ne fait pas de sens! Je pense que ce est une algue filamenteuse rouge. Je crois que ces cercles sont chloroplastes.

[microbe fanatic]

Where did you find it? Does it move on its own?

Où l'AS tu trouvé? Est-il passer son propre?

[AllMicroscope.com]

Great Quality Super cool

[microbe fanatic]

I think this might be it, this is a red algae. https://www.google.com/search?q=Eunotia ... B200%3B200

[microbe fanatic]

I think this is the name, the link was acting funny. Bangia Rhodophyta.

Je pense que ce est le nom, le lien a agi drôle. Bangla Rhodophyta.

[Seamer]

The redish colour makes it confusing but i believe it is a dying Hyalotheca.

[actinophrys]

No, I think seb had it right in the original post some years ago, this was a filamentous diatom. It's true that setting colour aside, it looks a bit like a small Bangia or less indented Hyalotheca, but the last two photos show entirely different detail from those. You can see both fine interlocking teeth where the cells meet and a defined girdle band across each, not in keeping with a plant cell wall, but reflecting finer sculpting of the valve faces and the region where the two overlap.

There are enough diatoms with this general form – besides the mentioned Eunotia pectinalis one might compare araphids like some Diatoma, Fragilariforma, Fragilaria, etc. I don't myself know enough to narrow down what is most likely.

[exmarine]

I have had a good look through my books and come up with your diatoms I think its Ellerbeckia.
You can see the golden colour in one of the photos.