Strobilidium disturbs the hunting of Pleuronema

A ciliate called Pleuronema is hiding between particles waiting for food. It is driven away by a Strobilidium which repeatedly jumps into Pleuronema's hiding place.

Commentary by Prof. Yuji Tsukii, Hosei University
The organism hiding between particles is Pleuronema marinum.

Pleuronema marinum

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

We cannot be sure whether the nearby organism is Strobilidium or Strombidium.

Strobilidium

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

Strombidium

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

Sampling Date : 03 July 2009

Sampling Site : Hirose River B  Google Map