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Heterotrichea: Heterotrichida: Spirostomatidae

 Spirostomum sp.

Spirostomum teres Genus: Body blunt at rear; kineties spiralled when body contracts (Illustrated Guide, 1985).@
Species:

Spirostomum sp., cell body 275 μm long, 31 μm wide, with two spherical macronuclei, x 400, x 640, Ushiku city, Ibaraki Pref., Japan, April 2002 by Y. Tsukii
Two spherical macronuclei, 15 μm in diam.
scale 50 μm scale 100 μm scale 150 μm; x 400
Spirostomum Spirostomum
scale 31 μm scale 63 μm scale 94 μm; x 640
Spirostomum Spirostomum Spirostomum
Peristome about 90 μm long (1/3 of the body length)
scale 50 μm scale 100 μm scale 150 μm; x 400
Spirostomum Spirostomum Spirostomum
scale 31 μm scale 63 μm scale 94 μm; x 640
Spirostomum Spirostomum Spirostomum
A flattened cell, x 400, x 640
Spirostomum Spirostomum

Two ellipsoidal macronuclei, 25 μm long, 10 μm wide, x 400, x 640
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Spirostomum Spirostomum Spirostomum Spirostomum
Spirostomum Spirostomum

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