Stentor contracting into a ball
Videonummer 11944911
| Stentor contracting. Light microscope footage of ciliate protozoan Stentor sp. reacting to a disturbance by contracting into a ball, and then relaxing again. Stentor species are filter-feeding freshwater protozoa which can reach lengths up to 2 millimetres, and are among the largest known unicellular organisms. A ring of prominent cilia surrounds the anterior part of the cell to sweep in food and aid in swimming. Some species live symbiotically with certain species of green algae. After being ingested, the algae live on and continue to photosynthesize, while their host absorbs nutrients they produce, and the algae receive protection and feed on the Stentor?'?s metabolic wastes. | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / Fox, Frank |
| Modell-Rechte: | nicht erforderlich |
| Länge: | 44 Sekunden |
| Seitenverhältnis: | 16:9 |
| Restrictions: | - |
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Keywords
- 40 Sekunden oder länger,
- Alge,
- Algen,
- Ball,
- bewegend,
- Biologie,
- biologisch,
- Ciliat,
- einzellig,
- Entspannen,
- entspannend,
- Entspannung,
- Fauna,
- freibeweglich,
- innere Struktur,
- Kontraktion,
- Licht,
- Lichtmikroskop,
- Mikrobe,
- Mikrobiologie,
- mikrobiologisch,
- Mikroorganismen,
- Mikroorganismus,
- Mikroskop,
- mikroskopisch,
- Natur,
- Niemand,
- Organismus,
- Protist,
- Protozoen,
- Protozoon,
- Reaktion,
- Schwimmen,
- Süßwasser,
- Symbiose,
- symbiotisch,
- Tierwelt,
- Wimpern,
- wirbellos,
- Wirbellose,
- Zelle,
- Zoologie,
- zoologisch