Can someone help identify Cyclotella meneghiniana ?

[osterport]

Hi, all

I found some different microbes in a drop of pond water, and search on the internet, found these are all Cyclotella meneghiniana. For me these look quite different:

[osterport]

The lefthand side microbe looks quite cyclotella, the righthand side looks like crabs with four hair.

This is the source I found:

https://outerhebridesalgae.uk/diatoms/d ... php?id=507


http://protist.i.hosei.ac.jp/pdb/Images ... sp_1c.html

[Hobbyst46]

Could be that the left image is a top view in post #1 (the valves lie horizontally) and the right image is a girdle view (the valves lie vertically) of the same diatom ?

[osterport]

Could be that the left image is a top view in post #1 (the valves lie horizontally) and the right image is a girdle view (the valves lie vertically) of the same diatom ?

Thanks for the reply. I thought so, but clearly the right image got flagellum, that's why I suspect it's another diatom.

[osterport]

Thanks to Google, Today I searched the picture and ended up with a name : Thalassiosira eccentrica



This shows it's really a cake-shaped diatom that I see from aside, and we can see some flagellum.

[osterport]

Could be that the left image is a top view in post #1 (the valves lie horizontally) and the right image is a girdle view (the valves lie vertically) of the same diatom ?

Thanks Hobbyst46, The picture below shows the same diatom looking with different focal depth, where we can see it's like a transparent cake.

Thalassiosira eccentrica in different focal depth .jpg (131.82 KiB) Viewed 139 times

From the first picture, we can barely see it's a 3d object, but starting from the 2nd one, we see it's birthday cake-shaped diatom, there is a red circle in the middle.

Well, with the radial flagellum, it should be described as a crown.

[osterport]

And this the picture best matches what I see through microscope.
https://www.tandfonline.com/doi/pdf/10. ... ccess=true