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Amoebae are single cellular protozoa that move via pseudopodia, engulfing organics and bacteria cells. They are common in "young sludge" conditions, but testate (shelled) amoeba are also common in older sludges. The big issue I have with using amoeba as indicator organisms is that many operators only look for the typical amoeba view (below)  Free Moving Amoeba However, this is not the only way amoeba appear under the microscope. They also frequently look like this:  Testate Amoeba  Amoeba - top down view
4 Comments
Frederik Wynants
9/16/2017 12:46:14 am
Very nice pictures !
Erik Rumbaugh
9/17/2017 09:54:01 am
Thank you for giving me feedback and visiting my blog.
Tadhg Meaney
9/18/2018 11:13:03 am
In your second picture, 'amoeba top down view', would you classify this as a testate amoeba?
Erik Rumbaugh
9/18/2018 04:03:10 pm
That is a testate amoeba. Note the "shell" Leave a Reply. |
AuthorErik Rumbaugh has been involved in biological waste treatment for over 20 years. He has worked with industrial and municipal wastewater facilities to ensure optimal performance of their treatment systems. He is a founder of Aster Bio (www.asterbio.com) specializing in biological waste treatment. 
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