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These cells, all from the same sample, found themselves stuck to the glass - so here are Tintinnids trying to get away!
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These cells, all from the same sample, found themselves stuck to the glass - so here are Tintinnids trying to get away!
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[taxonomy:genus=Vorticella]
Date:
23 Aug 2011
Location:
Small lake in Kent Ridge Park. Water margin with vegetation, brown sediment with organic detritus. Tadpoles resting nearby.
Microscope:
Bright-field with closed condenser aperture.
Camera:
Nikon D7000
Collector:
Brandon Seah
Scale:
20830 pixels/mm = 20.8 pixels/µm
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[taxonomy:binomial=Euplotes woodruffi]
Large hypotrich ciliate.
Date:
7 Sep 2011, originally collected 6 Sep 2011
Location:
Freshwater stream flowing out of MacRitchie Reservoir, close to Venus Drive entrance. On field trip with NUS freshwater biology class. Stream was brown with sandy bottom, water mostly clear.
Microscope:
Bright-field with closed condenser aperture.
Camera:
Nikon D7000
Collector:
Brandon Seah
Scale:
20830 pixels/mm = 20.8 pixels/µm (40x)
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[taxonomy:binomial=Euplotes woodruffi]
Date:
7 Sep 2011, originally collected 6 Sep 2011
Location:
Freshwater stream flowing out of MacRitchie Reservoir, close to Venus Drive entrance. On field trip with NUS freshwater biology class. Stream was brown with sandy bottom, water mostly clear.
Microscope:
Bright-field with closed condenser aperture.
Camera:
Nikon D7000
Collector:
Brandon Seah
Scale:
20830 pixels/mm = 20.8 pixels/µm (40x)
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[taxonomy:genus=Mesodinium]
Date:
9 Sep 2011, originally collected mid-Aug
Location:
Freshwater fish pond in concrete tank, outside Life Science Lab 7. Walls were covered in filamentous cyanobacteria, and the bottom with fish waste. Water was mostly clear.
Pipetted sample from floc at bottom of tube which has settled after > two weeks
Microscope:
Bright-field with closed condenser aperture.
Camera:
Nikon D7000
Collector:
Brandon Seah
Scale:
20830 pixels/mm = 20.8 pixels/µm (40x)
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[taxonomy:genus=Aspidisca]
Aspidisca is a hypotrich ciliate that uses its cirri (compound ciliated structures) to "walk" like a tiny insect across the surface it is exploring.
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[taxonomy:genus=Disematostoma]
Date:
7 Sep 2011, originally collected 6 Sep 2011
Location:
Freshwater stream flowing out of MacRitchie Reservoir, close to Venus Drive entrance. On field trip with NUS freshwater biology class. Stream was brown with sandy bottom, water mostly clear.
Microscope:
Bright-field with closed condenser aperture.
Camera:
Nikon D7000
Collector:
Brandon Seah
Scale:
20830 pixels/mm = 20.8 pixels/µm (40x)
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[taxonomy:genus=Halteria]
Halteria is a ciliate with a 'crown' of membranelles (an adoral zone of membranelles, AZM) on one end of the cell, and spine-like structures radiating from the equatorial region of the cell. In this video, a Halteria cell has oriented itself head-on upon the slide or coverslip surface and so its rotational motion is evident. At one point, it orients obliquely, and because it is anchored by something to the surface, it spins around in a circle.
From a sample that has been kept for >1 week. Originally collected from pond, NUS botany garden.
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[taxonomy:genus=Halteria]
Darting behavior of Halteria, an oligotrich ciliate. The darting characterizes this genus.
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[taxonomy:genus=Stylonychia]
Date:
9 Sep 2011, originally collected mid-Aug
Location:
Freshwater fish pond in concrete tank, outside Life Science Lab 7. Walls were covered in filamentous cyanobacteria, and the bottom with fish waste. Water was mostly clear.
Pipetted sample from floc at bottom of tube which has settled after > two weeks
Microscope:
Bright-field with closed condenser aperture.
Camera:
Nikon D7000
Collector:
Brandon Seah
Scale:
20830 pixels/mm = 20.8 pixels/µm (40x)
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[taxonomy:genus=Cinetochilum]
A scuticociliate with ventral ciliature and a flattened-oval body. It swims around and also uses its cilia to "walk" on substrates, as this video shows. Three long "tail" (caudal) cilia.
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[taxonomy:genus=Thuricola]
This is a ciliate living inside a vase-shaped "lorica", or shell, that comes with its own lid that shuts behind the cell when it retracts into its den. Unfortunately, my attempt to "tap on the glass" and have it retract were not successful. Note the streaming of particles in the water due to the feeding current set up by the cilia of the creature.
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[taxonomy:genus=Coleps]
[taxonomy:genus=Anthophysa]
Date:
23 Aug 2011
Location:
Small lake in Kent Ridge Park. Water margin with vegetation, brown sediment with organic detritus. Tadpoles resting nearby.
Microscope:
Bright-field with closed condenser aperture.
Camera:
Nikon D7000
Collector:
Brandon Seah
Scale:
20830 pixels/mm = 20.8 pixels/µm
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[taxonomy:genus=Urocentrum]
Date:
7 Sep 2011, originally collected 6 Sep 2011
Location:
Freshwater stream flowing out of MacRitchie Reservoir, close to Venus Drive entrance. On field trip with NUS freshwater biology class. Stream was brown with sandy bottom, water mostly clear.
Microscope:
Bright-field with closed condenser aperture.
Camera:
Nikon D7000
Collector:
Brandon Seah
Scale:
20830 pixels/mm = 20.8 pixels/µm (40x)
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[taxonomy:genus=Urocentrum]
Date:
7 Sep 2011, originally collected 6 Sep 2011
Location:
Freshwater stream flowing out of MacRitchie Reservoir, close to Venus Drive entrance. On field trip with NUS freshwater biology class. Stream was brown with sandy bottom, water mostly clear.
Microscope:
Bright-field with closed condenser aperture.
Camera:
Nikon D7000
Collector:
Brandon Seah
Scale:
20830 pixels/mm = 20.8 pixels/µm (40x)
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[taxonomy:genus=Cyclidium]
Date:
12 Aug 2011
Location:
Permanently wet longkang beside NUS Enterprise Incubator, under shade of large banyan tree. Drain full of leaf litter and shed banyan roots. Water clear, not green, grey-brown floc when bottom and litter stirred.
Microscope:
Bright-field with closed condenser aperture.
Camera:
Nikon D7000
Collector:
Brandon Seah
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[taxonomy:genus=Cyclidium]
Date:
12 Aug 2011
Location:
Permanently wet longkang beside NUS Enterprise Incubator, under shade of large banyan tree. Drain full of leaf litter and shed banyan roots. Water clear, not green, grey-brown floc when bottom and litter stirred.
Microscope:
Bright-field with closed condenser aperture.
Camera:
Nikon D7000
Collector:
Brandon Seah
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Description: English: Vorticella campanula. From a garden pond in Munich, Germany. 10x objective, image width: 350 µm. See
here for imaging details Deutsch: Glockentierchen (Vorticella campanula) aus einem süddeutschen Gartenteich. 10x Objektiv, Bildbreite: 350 µm. Siehe
hier für Bildgenerierungsdetails. Date: 20. April 2008 (recording immediately after collection). Source: Own work. Author:
Dietzel65.
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Description: English: Paramecium caudatum in conjugation. Date: 16 February 2013, 13:28:12. Source: Own work. Author:
Deuterostome.
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Description: English: Paramecium bursaria, a species of Paramecium with symbiotic algae. Date: 16 February 2013, 12:55:35. Source: Own work. Author:
Deuterostome.