Hyalotheca dissiliens, spirogyra and rotifers

Charles Krebs · Post by **Charles Krebs** » Mon Apr 07, 2014 10:26 pm

My most commonly used current collection location (as was the case last year about this time) is full of Hyalotheca dissiliens (a colonial filamentous desmid), mixed in with spirogyra.

Here are a few new shots, plus some shots of rotifers that fed on the spirogyra.

I watched the rotifers in these last two pictures methodically move along strands of algae. They would stop at each cell, pierce the cell wall and suck out the contents. In this last shot you can see the empty lower cells and the indentations where the rotifer cut into the cell.

Jacek · Post by **Jacek** » Tue Apr 08, 2014 1:44 am

Hello Charles

. Very nice !

Hindpool · Post by **Hindpool** » Tue Apr 08, 2014 3:52 am

A remarkable observation of those rotifers taking their chlorophyll neat, beautifully presented and with helpful comments too. Thank you Charles.

_Michal_ · Post by **_Michal_** » Tue Apr 08, 2014 8:15 am

Wonderful

carlos.uruguay · Post by **carlos.uruguay** » Tue Apr 08, 2014 9:04 am

A beauty!!!!

Sumguy01 · Post by **Sumguy01** » Tue Apr 08, 2014 7:12 pm

Great pics.
I have been missing seeing your work.
Glad your back at it again.
Thanks for sharing.

arturoag75 · Post by **arturoag75** » Tue Apr 08, 2014 11:54 pm

Super shots Charlie

sebba28 · Post by **sebba28** » Wed Apr 09, 2014 2:35 am

Beautiful

billporter1456 · Post by **billporter1456** » Wed Apr 09, 2014 3:52 am

Charles, thanks for teaching me something about Rotifers and doing so with beautiful images. Now I have something else to look for when observing Rotifers!

Charles Krebs · Post by **Charles Krebs** » Wed Apr 09, 2014 11:02 am

Thanks for the comments!

I was a pleased to observe the rotifers dining on the spirogyra, and a little surprised I had not seen it before. It was also interesting in that the first slide that was observed (and where I took these last two rotifer images) was a very "deep" slide, that really had too much water in it for some magnifications. A second slide was made with less water, but the rotifers (even though they still had plenty of room to maneuver about) did not seem "comfortable" enough to resume their feeding.

piermicro · Post by **piermicro** » Thu Apr 10, 2014 11:30 am

Good job. As always from master.

Protos · Post by **Protos** » Fri Apr 11, 2014 3:22 am

excellent
DIC I guess

Stefano B · Post by **Stefano B** » Fri Apr 11, 2014 2:57 pm

Hi Charles, did you use immersion objective/condenser for those pictures?

Regards
Stefano

Ondrakova · Post by **Ondrakova** » Mon Jun 15, 2015 3:57 am

Hi Charles, can you please help me? What is the name of this beautiful rotifer, I have also discovered a way, but it can lead to classification in any book found.
( https://www.youtube.com/watch?v=Vm6cZ73bhtM )
Greetings from Vienna - Traude

Harald · Post by **Harald** » Mon Jun 15, 2015 10:54 am

Hi there Charles,
What can I say, that is not said ?
Amazing work as always!

Hyalotheca dissiliens, spirogyra and rotifers

Hyalotheca dissiliens, spirogyra and rotifers

Thanks!