Crawling on a particle surface
This small ciliate uses its cilia like arms and legs to crawl along the surface of a particle, probably to look for food. It has a long projection at the rear end of its body.
Commentary by Prof. Yuji Tsukii, Hosei University
This organism belongs to genus Dysteria.
Like Nassula, it has a cylindrical mouth. It is characterized by a unique caudal (rear) protrusion called a podite, which is composed of a bundle of cilia. This organism is most likely Dysteria calkinsi.
Sampling Date : 27 May 2009
Sampling Site : Hirose River A Google Map