We get two for one here in a small field of detritus. Both show well in the same plane of focus in the top image. The lower gray amoeba is projecting a pseudopodium larger than its entire body which is roughly 8 by 12 micrometers. The amoeboid is very similar to the subject in my Volume 1 post. However, it is only one quarter of the size. It was for the most part stationary. Small changes can be seen in the pseudopodia and the shape of the test, which is just a clump of gray nodules.
Above it is another tiny shelled amoeba. The phase contrast shows the shell as a bright oval. Protruding from the oval, at the 7 o’clock position in the top image is a dark gray pseudopodium. As more images were being made, the shelled amoeba had rotated around, projecting its pseudopodium to the 3 o’clock position. By the time the last image was made the shelled amoeba had moved on leaving the gray one to feed alone. Both subjects are from material in a decaying forest log.
Walter
Amoeba - Volume 4 - Two tiny testate amoeba.
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Amoeba - Volume 4 - Two tiny testate amoeba.
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