Ventral view of the hypotrich ciliate, Aspidisca turrita (Ehrenberg, 1831) Claparède & Lachmann, 1858. The cytostome with adoral zone of membranelles is senn at viewer's lower right.The ventral ciiri are seen anteriorly and the transverse cirri posteriorly.Collected from a freshwater pond near Boise, Idaho. June 2005.DIC This image was taken by William Bourland. He now uses a Zeiss Axioskop 2 with Spot Insight and Spot Flex CCD cameras (Diagnostic Instruments). Image copyright: William Bourland, image used under license to MBL (micro*scope).
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From the collection
Freshwater and Terrestrial Microbes of Idaho (USA) and Elsewhere
|Description of Aspidisca turrita: Small and ovoid hypotich ciliate, but convex on the right, up to 30 microns long. The outline is smooth but the dorsal surface has a long backwardly curving thorn. These are seven frontoventral cirri in the 'lynceus' arrangement and there are five transverse. Two of these five are separated by a spike. The posterior adoral zone of membranelles is composed of 10-15 membranelles, and the anterior ciliary organelle has 3-4 cilia. |