Library > Name > Amphisiella

Ciliate busily foraging

A ciliate with a slender body is hanging around a particle, and sometimes sticks its head into the particle, probably for foraging. We can see plenty of food and the movements of the contractive vacuole.


Commentary by Prof. Yuji Tsukii, Hosei University
Stylonychia is characterized by three straight cirri at the rear end of the cell.

http://protist.i.hosei.ac.jp/PDB/Im.....

Instead, this organism has transverse cirri extending backward. Also, a line of needle-like cilia can be seen at the side of the cell.

http://protist.i.hosei.ac.jp/PDB/Im.....

These features allow us to identify this organism as Amphisiella.

Sampling Date : 03 July 2009

Sampling Site : Hirose River B  Google Map

A busily foraging ciliate

This ciliate is busily foraging back and forth, changing directions and passing between particles. There are cirri at the front and rear of its slender body, and the cirri at the front are especially active.


Commentary by Prof. Yuji Tsukii, Hosei University
This organism is Amphisiella, which belongs to subclass Stichotrichia.

http://protist.i.hosei.ac.jp/PDB/Im.....

It is characterized by 4 or 5 cirri at the rear end, and is often found in open fields.

Sampling Date : 18 October 2009

Sampling Site : Hirose River A  Google Map

A peanut-shaped ciliate

The shape of this ciliate reminds us of a peanut shell. We can see cirri at the front and rear ends of its slender body. To catch food, it repeats an erratic pattern of going forward, stopping, and changing directions. When it makes contact with a food particle, its flexible mouth wraps around the prey to consume it.


Commentary by Prof. Yuji Tsukii, Hosei University
Here we can see an Amphisiella with 5 transverse cirri at its rear end.

http://protist.i.hosei.ac.jp/PDB/Im.....

When it takes in food, the back of the body swells; but when not feeding, the front and rear are approximately the same size.

Sampling Date : 18 October 2009

Sampling Site : Hirose River A  Google Map