Hyalotheca dissiliens (colonial filamentous desmid)

Images made through a microscope. All subject types.

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Charles Krebs
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Hyalotheca dissiliens (colonial filamentous desmid)

Post by Charles Krebs »

I scooped up some green algal "mat" from one of my favorite locations. The appearance puzzled me at first, especially the thick mucilage sheath. But it appears to be Hyalotheca, a colonial filamentous desmid. Pretty sure the species is Hyalotheca dissiliens.

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Linden.g
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Post by Linden.g »

This is stunning, what do they look like as a single cross section

Marek Mis
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Post by Marek Mis »

Charlie,

Great images ! The last one is very impressive. It is very graphic. Beautiful !

Marek

Jacek
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Post by Jacek »

in addition to great pictures, you have an artistic sense. Congratulations

arturoag75
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Post by arturoag75 »

Very clear shots ..i like a lot!

Wim van Egmond
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Post by Wim van Egmond »

Great pictures, the third one is very special! I can imagine that this is a favourite pond because when you have desmids like these in it there will be many other interesting species.

Wim

RogelioMoreno
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Post by RogelioMoreno »

Beautiful set!

Rogelio

seta666
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Post by seta666 »

I love the last one, would make a nice wall picture

Charles Krebs
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Post by Charles Krebs »

Thank you all for the comments.

Quite amazing how these can move toward the light. I poured the jar that contained the sample in to a different (flat, square) container,. It was as if they disappeared completely into the mud and muck as things got swirled around. I placed one of those Ikea light shining into one corner of the new dish. The next morning there was a nice clean bright green "mass" directly under the light.

Wim van Egmond
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Post by Wim van Egmond »

Yes, all desmids move, last year I made some time lapses and they all swim, a bit like diatoms. Probably using the mucus excresion as propulsion?

Wim

pwnell
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Post by pwnell »

I agree, absolutely beautiful.

curt0909
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Post by curt0909 »

I like the overlap interference. They're so evenly crossed you would think it was artificially positioned this way

Charles Krebs
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Post by Charles Krebs »

Wim,
Yes, all desmids move, last year I made some time lapses and they all swim, a bit like diatoms.
Naturally I am used to diatoms cruising around on my slides. These move very slowly and steadily. And they certainly do know where the light is and relentlessly head towards it!

Here is a shot of the dish the day after I poured my sample into it and placed a light at one corner. As I said, initially it was hard to discern anything at all with a green color to it since things were so evenly mixed, it just looked like a bowl of mud and silt. The next morning however this is what it looked like (easy to pull out a nice clean sample to photograph :wink: ):

Image

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