Algae Eudorina with parasites? Nuclearia amoeba? Help ID

Images made through a microscope. All subject types.

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carlos.uruguay
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Algae Eudorina with parasites? Nuclearia amoeba? Help ID

Post by carlos.uruguay »

Eudorina is a green colonial algae formed by many cells, multiples of 16,
united in a gelatinous mass.
Each cell has two flagella.
Those of the video measure some 26um each one.
n the video we observe inside the colony at least 3 organisms similar to amoebae.
We think that maybe are fungi or other parasitic organisms of the algae.
We appreciate any information.
We have found in in the creek Chopping, sweet watercourse of the department of San Jose, Uruguay, South America.
40X objective.
Polarized oblique light
Link:
http://www.youtube.com/watch?v=JVSbHKJD2_k
Regards
carlos
Last edited by carlos.uruguay on Mon Jan 13, 2014 4:57 am, edited 2 times in total.

RogelioMoreno
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Post by RogelioMoreno »

Clear video.

Rogelio

Jacek
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Post by Jacek »

Nice video

carlos.uruguay
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Post by carlos.uruguay »

Thanks Rogelio and Jacek.
There is a fungus that attacks this algae, but a specialist who sent the video told me that is not that
I think this is an amoeba that attacks Eudorina. I hope Ferry clarifies it.

jc maccagno
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eudorina

Post by jc maccagno »

Great video..loved the background sound track!

John

carlos.uruguay
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Post by carlos.uruguay »

Thank you very much John!

carlos.uruguay
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Post by carlos.uruguay »

This page shows a photo of Eudorina parasitized maybe by the amoeba Nuclearia
The image is very similar to the filmed in the video
http://protist.i.hosei.ac.jp/pdb/images ... sp_1b2.jpg
http://protist.i.hosei.ac.jp/pdb/images ... sp_3a.html
carlos

Bruce Taylor
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Post by Bruce Taylor »

Very interesting, Carlos. :D
It Came from the Pond (Blog): http://www.itcamefromthepond.com/

carlos.uruguay
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Post by carlos.uruguay »

Thanks Bruce.
Unfortunately I didn't find another alga in the sample

Ecki
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Post by Ecki »

Very nice indeed.

This could be a Cercozoa parasite. They are amoeboflagellates and difficult to identify. If you send me your email address per PM I will send you a paper with some images and background on Ociraptor, a new species that feeds on Eudorina.

Very often these parasites are joined by Nucelaria. Nuclearia can't penetrate the cell wall, Ociraptor can. But clever Nuclearia uses the hole made by Ociraptor (or Pseudospora etc.) and feeds in the algae as well.

Regards
Ecki

carlos.uruguay
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Post by carlos.uruguay »

Thank you very much Ecki!!
I already sent to you my mail

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