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2006Botanical Garden in AobayamaVII

Soils from the L, H, and A layers were sampled from the Tohoku University Botanical Garden in Sendai. This is a video of an organism taken from the A layer, the first layer below the soil surface (which is composed of L, F, and H layers). The A layer is mainly composed of mineral particles and humus. At first organisms could not be found in the newly collected soil, so the samples (including water) were left for one month and then observed.

Commentary by Prof. Yuji Tsukii, Hosei University
The cell of this cylindrical organism is slightly tapered at the front end and rounder at the rear end.

The mouth is on the side near the front, which might indicate that it is a thin Tetrahymena cell.

This organism has lines running lengthwise along the whole cell, a characteristic of Sathrophilus.

However, the mouth of Sathrophilus is set back a little from the front end, whereas the mouth of the organism in this video is located closer to the front. This suggests that the organism may not be Sathrophilus.

Sampling Date : 06 December 2006

Sampling Site : Tohoku University Botanical Garden in Aobayama  Google Map

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