Paramecium fed on stained yeast

Videonummer 12370978
Paramecium caudatum cells out of a culture showing the behavior of the individuals when stained yeast is applied to the culture medium under the coverglass. Paramecium is a filter feeder and mainly feeds on bacteria. Paramecium is not able to make a food selection, so all kind of particles were ingested and packed into food vacuoles, in this case stained yeast cells. The yeast was stained with Congo red, a pH indicator to show the pH inside the food vacuoles during the digestion period. Several research articles describe the different stages of food vacuoles during the digestion process. Within 5 min of formation, the pH within the vacuole dropped from approximately 7 to 3, indicated by a change of color of Congo-red from red to blue. This clip was taken about 10 min after the application of the yeast suspension, showing all stages of food vacuoles. Microscopic contrast technique: Differential interference contrast.. Captured field width: 0.3mm.
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / Guenther, Gerd
Modell-Rechte: nicht erforderlich
Eigentums-Rechte: nicht erforderlich
Länge: 27 Sekunden
Seitenverhältnis: 16:9
Restrictions: -

Preise für dieses Video ab 100 €

Werblich (Einzelne Webseiten etc.) ab 100 €
Redaktionell (Einzelne Webseiten etc.) ab 175 €
Medien (TV Film, Serie, TV Doku etc.) ab 230 €

Keywords

;