An amoeba hunting for food I (Long Version)

Here a large amoeba is actively hunting and catching food in various ways. When a food particle becomes caught on the tip of the pseudopodium, the pseudopodium carries the food to the center of its body, by becoming shorter and broader until the food is engulfed.

Commentary by Prof. Yuji Tsukii, Hosei University
The beginning of this video, the amoeba looks like it might be a floating Vannella, which is difficult to distinguish from Vexillifera.

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

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

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

Later in the video, we can see the triangular-shaped lobopodium, which is characteristic of Vexillifera.

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

However, since the organism in this video is continuously floating, it is difficult to say with certainty whether it really is Vexillifera.

Sampling Date : 09 August 2009

Sampling Site : Hirose River B  Google Map