Stentor Coeruleus- Among the Most Admired and POPULAR Ciliates! скачать в хорошем качестве

Stentor Coeruleus- Among the Most Admired and POPULAR Ciliates!

The latest Collaboration with Chloé Savard, the Tardibabe. These giant unicellular organisms called Stentor coeruleus are among the most admired and popular ciliates around. They measure around 1 mm, which makes it possible to observe them with naked eyes and possess a blue-green pigment named stentorin. Stentorin plays a major role in light detection and defence mechanisms. When Stentor is being threatened by a predator, the toxin from the stentorin pigment granules are released in the environment, which cause the predator to retreat and gives a chance for S. coeruleus to escape! The oral aperture is spiral-shaped and has thousands of small specialised cilia, which move together to create a vortex that captures food particles, bringing them directly to the mouth. These particles will then get digested in special structures called food vacuoles, which are full of digestive enzymes. They’re basically primitive stomachs! The macro nucleus appears as small white bubbles linked together resembling beads on a string. This macro nucleus contains DNA that is necessary for reproduction and regeneration. The bigger this unicellular organism is, the more copies of its whole genome it has. That way it can regenerate from small pieces when it gets damaged. Only a small piece of DNA is necessary to form a whole new Stentor! Video taken by Chloé Savard aka Tardibabe with iPhone mounted on her BA310E Motic microscope with an @ilabcam adaptor. Follow @moticamerica @ilabcam @arithmetikmusiq for the music and @tardibabe for the content, all on Instagram. Copyright All rights reserved and belong to their respective owners Reference: Miyake et al. (2001) "Defense function of pigment granules in Stentor coeruleus", Europ. J. Protistol. 37, pp. 77-88. Slabodnick, Mark M et al. “The Macronuclear Genome of Stentor coeruleus Reveals Tiny Introns in a Giant Cell.” Current biology : CB vol. 27,4 (2017): 569-575 Slabodnick, M. M., & Marshall, W. F. "Stentor coeruleus." Current Biology, 24(17), R783-R784.