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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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Rumoroso, Cantabria, Espaa
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Gravalos, La Rioja, Spain
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Rumoroso, Cantabria, Spain
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Urocentrum (your-owe-sent-rum) is a peniculine ciliate related to Paramecium. It is rather barrel shaped, with cilia forming a band around the centre of the cell. With a small mouth located about half way along the cell, and with a caudal tuft of cilia. Like Paramecium it has trichocysts and a contractile vacuole with radiating collecting canals. Phase contrast.
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Dorsal infraciliature of Urocentrum turbo (MUELLER, 1786) NITZSCH, 1827. Stained by the silver carbonate technique (Foissner,W. Europ. J. Protistol.27:313-330;1991).Brightfield.
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in vivo left ventrolateral view of Urocentrum turbo (MUELLER, 1786) NITZSCH, 1827.The red arrowhead indicates the oral aperture.The yellow arrowhead indicates the caudal cirrus. The green arrowhead indicates one of the numerous fusiform extrusomes.The anterior ciliary girdle (ACG) and the macronucleus (MN) are visible here.DIC.
