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Video archives
Here, we establish an online video library where a series of movies relevant to motility are available. The miscellaneous category includes bacteria, eukaryotes, and archaea, viruses, proteins, and synthetic polymers. The movies that are meaningful in the biology field will be uploaded in both Japanese and English.
For the contributors who plan to upload your video, you should keep in mind the following suggestions:
(1) the video which is relative to the object of your research
(2) the video about microbe found in the research activity of the super-science high school or biological clubs are encouraged to upload
(3) Do not forget to add the link of your video which has been published (Please make sure the copyright)
(4) If you think some videos in the old textbook are valuable to upload, please let us know.
Video List
Popular Ranking
2016.12.15
Eukaryote
Cilia motion repels surrounding organisms
Species name:Strombidium or Strombidium
AL-Museum AL-Museum
The whirlpool created by this Strombidium's cilia motion is so strong that small organisms are pulled toward the Strombidium, only to be repelled by the water current. Occasionally the Strombidium manages to capture food using the whirlpool hunting strategy.
2016.12.15
Eukaryote
Synura collapsing at the air-water interface
Species name:Synura
AL-Museum AL-Museum
A colony of brown flagellates, Synura, rolls slowly along the surface of particles or quickly rotates in open water. When it reaches the outer boundary of water and encounters air, it must stop. Here, some contents of the colony are gradually discharged. The flagella of each flagellate stop waving as the whole colony shrinks and finally collapses with the flagellates floating apart.
2016.11.08
Eukaryote
Spirostomum sp.
Species name:Spirostomum sp.
Bureau Swerage Tokyo Metropolitan Government
The size of Epistylis is 150-400 μm in length and 20-50 μm in wide. Some species size are more than 3 millimeters. The body is a long cylinder-shaped and its color is yellow or brown. The peristome is occupying about 1/3 body length from front end of the body. It have myoneme in the body. They move with gliding, and sometimes swim with shrinking spiral.
2016.07.15
Eukaryote
Synula grows into a large colony and divides into smaller ones
Species name:Synura
AL-Museum AL-Museum
Several Synula (colonies of brown flagellates) take turns feeding on a large particle. Successful feeding causes the Synula to grow larger, which makes it difficult to move quickly. One large Synula disappears briefly behind the particle and reappears as two smaller colonies, apparently having divided just out of view.
2016.07.15
Eukaryote
Eating and growing
Species name:Synura
AL-Museum AL-Museum
This large particle is covered with a bacterial biofilm, which provides a rich feeding ground for various organisms. As a Synula colony feeds on the bacteria, its member flagellates grow and divide, causing the Synula to become longer before our eyes. Between this long Synula and the particle surface, other small flagellates are absorbed in eating.
2016.07.15
Eukaryote
Synula moving along aggregate surface
Species name:Synura
AL-Museum AL-Museum
Large and small colony of Synula are moving around an aggregate. However, becoming too large may be inconvenient, so here we can see the division of one big colony into two smaller ones.
2016.07.15
Eukaryote
How to elongate and divide?
Species name:Synura
AL-Museum AL-Museum
Various sizes of Synura(flagellate colonies) visit the big particle to forage for food. To share the food equally, the colony needs to rotate periodically so that each individual member can access the particle surface. Meanwhile, the number of cells in one of the colonies increases and the whole colony becomes larger, probably because the individual members have multiplied. However, becoming too large may be inconvenient, so here we can see the division of one big colony into two smaller ones.
2016.07.15
Eukaryote
Synula moving along aggregate surface
Species name:Synura
AL-Museum AL-Museum
Synula-a colony of brown flagellates- travels around an aggregate, sometimes by tumbling and sometimes by sliding along the surface of the aggregate.
2016.07.15
Eukaryote
A still-life view of algae and diatoms
Species name:Synedra or Tabellaria or Fragilaria, Oscillatoria, Blue-green algae, Scenedesmus
AL-Museum AL-Museum
This is a tranquil scene featuring various kinds of diatoms and green algae, none of which is moving.
2015.12.01
Eukaryote
Strobilidium hunting technique I
Species name:Strombidium or Strombidium
AL-Museum AL-Museum
Hunting technique The shape of this ciliate called Strobilidium reminds us of a bell or strawberry. Although the body shape is similar to Vorticella, it does not have a stalk, yet like Vorticella, it rotates in a continuous arc. The whirlpool created by the rapid waving of the cilia surrounding its mouth pulls food into the organism.