La Caracola - Diario de Información del Mar
This ciliate protozoan is from the Trachelius genus and reminds me of the moon, full of craters of various sizes 🌙
These crater structures are actually called contractile vacuoles and their role is to regulate the osmotic pressure inside the cell. Imagine you’re on a boat with holes in it and you tried to keep the water out by filling buckets! That’s pretty much the role of those contractile vacuoles, they’re the buckets of this tiny Trachelius ship 😄
Trachelius is a predator and carnivorous little boi and loves to feed on Peritrich ciliates like Vorticella but also likes a good Rotifer or even some algae! If you’ve seen my other videos of Dileptus, you may have noticed that Trachelius has the same elephant trunk structure near its mouth. This part of the cell is called the proboscis and is used to sense the environment and potential preys.
It has been observed before that when Trachelius is trapped under the cover slip (the small piece of glass we put on top of the sample) it tends to eject some body parts or cellular content. When I started following Trachelius around, it lost its proboscis and got me really confused with what this little buddy could be 😂 at last, I found others like him in the sample and was able to identify him 😇
That’s all for today folks!! 💜💜
Soundtrack magic was brought to you by the extraordinary @arithmetikmusiq thmetikmusiq ✨
Video taken with my iPhone mounted on my BA310E Motic microscope with an @ilabcam adapter 🔬 @moticamericas
References:
Fenchel, T. (2013). Ecology of Protozoa: The biology of free-living phagotropic protists. Springer-Verlag.
Foissner, W., & Berger, H. (1996). A user‐friendly guide to the ciliates (Protozoa, Ciliophora) commonly used by hydrobiologists as bioindicators in rivers, lakes, and waste waters, with notes on their ecology. Freshwater biology, 35(2), 375-482.
Nisbet, B. (2012). Nutrition and feeding strategies in protozoa. Springer Science & Business Media.
Patterson, D. J., & Hedley, S. (1996). Freeliving Freshwater Protozoa. CRC Press.
These crater structures are actually called contractile vacuoles and their role is to regulate the osmotic pressure inside the cell. Imagine you’re on a boat with holes in it and you tried to keep the water out by filling buckets! That’s pretty much the role of those contractile vacuoles, they’re the buckets of this tiny Trachelius ship 😄
Trachelius is a predator and carnivorous little boi and loves to feed on Peritrich ciliates like Vorticella but also likes a good Rotifer or even some algae! If you’ve seen my other videos of Dileptus, you may have noticed that Trachelius has the same elephant trunk structure near its mouth. This part of the cell is called the proboscis and is used to sense the environment and potential preys.
It has been observed before that when Trachelius is trapped under the cover slip (the small piece of glass we put on top of the sample) it tends to eject some body parts or cellular content. When I started following Trachelius around, it lost its proboscis and got me really confused with what this little buddy could be 😂 at last, I found others like him in the sample and was able to identify him 😇
That’s all for today folks!! 💜💜
Soundtrack magic was brought to you by the extraordinary @arithmetikmusiq thmetikmusiq ✨
Video taken with my iPhone mounted on my BA310E Motic microscope with an @ilabcam adapter 🔬 @moticamericas
References:
Fenchel, T. (2013). Ecology of Protozoa: The biology of free-living phagotropic protists. Springer-Verlag.
Foissner, W., & Berger, H. (1996). A user‐friendly guide to the ciliates (Protozoa, Ciliophora) commonly used by hydrobiologists as bioindicators in rivers, lakes, and waste waters, with notes on their ecology. Freshwater biology, 35(2), 375-482.
Nisbet, B. (2012). Nutrition and feeding strategies in protozoa. Springer Science & Business Media.
Patterson, D. J., & Hedley, S. (1996). Freeliving Freshwater Protozoa. CRC Press.
MBDA dotará del sistema a las fragatas Tipo 31 y CSC
Reino Unido y Canadá armarán sus futuras fragatas con el Sea Ceptor
Los militares han actuado en tareas de vigilancia fronteriza
El Jemad considera suficiente el despliegue en Ceuta y Melilla para afrontar una crisis migratoria
Dassault Aviation deberá fabricar 48 nuevas unidades
El caza francés Rafale suena para dotar a Indonesia y Croacia
La unidad MSN111 será la décima del Ejército del Aire español
Ya hay cien aviones A400M y suman 100.000 horas de vuelo
Volvox is a genus of multicellular freshwater green algae (Chlorophyta). It is largely used for developmental biology, and to study the transition from single celled to multicellular forms of life. Can you see how these spherical photosynthetic beauties are creating a water flow around them?
Volvox is composed of colonies of small biflagellate cells with smaller aflagellate colonies inside that forms smaller spheres. The flagellated cells are all interconnected by small cytoplasmic bridges. A Volvox colony is typically formed of two types of cells; germ and somatic. The larger sphere is composed of around 2000 somatic cells responsible for motility. These create this flow around the colony, but they cannot divide and are programmed to die within a few days. Germ cells are nonmotile, but can divide asexually and form new little colonies. These generative cells are basically responsible for Volvox’s growth and reproduction and are practically immortal!
When the mother colony breaks open, the young colonies can escape and start their life! The cycle can then start again ☺️
Soundtrack by beat wizard @arithmetikmusiq ✨
Video taken with my iPhone mounted on my BA310E Motic microscope with an @ilabcam adapter 🔬 @moticamericas
References:
David L. Kirk, Germ–Soma Differentiation in Volvox, Developmental Biology,
Volume 238, Issue 2 (2001)
Fenchel, T. (2013). Ecology of Protozoa: The biology of free-living phagotropic protists. Springer-Verlag.
Umen, J.G. Volvox and volvocine green algae. EvoDevo 11, 13 (2020)
Volvox is composed of colonies of small biflagellate cells with smaller aflagellate colonies inside that forms smaller spheres. The flagellated cells are all interconnected by small cytoplasmic bridges. A Volvox colony is typically formed of two types of cells; germ and somatic. The larger sphere is composed of around 2000 somatic cells responsible for motility. These create this flow around the colony, but they cannot divide and are programmed to die within a few days. Germ cells are nonmotile, but can divide asexually and form new little colonies. These generative cells are basically responsible for Volvox’s growth and reproduction and are practically immortal!
When the mother colony breaks open, the young colonies can escape and start their life! The cycle can then start again ☺️
Soundtrack by beat wizard @arithmetikmusiq ✨
Video taken with my iPhone mounted on my BA310E Motic microscope with an @ilabcam adapter 🔬 @moticamericas
References:
David L. Kirk, Germ–Soma Differentiation in Volvox, Developmental Biology,
Volume 238, Issue 2 (2001)
Fenchel, T. (2013). Ecology of Protozoa: The biology of free-living phagotropic protists. Springer-Verlag.
Umen, J.G. Volvox and volvocine green algae. EvoDevo 11, 13 (2020)
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La Caracola - Diario de Información del Mar
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