image_list image_listE

Heterotrichea: Heterotrichida: Spirostomatidae

 Spirostomum teres
Claparède & Lachmann, 1859

Spirostomum teres Genus: Body blunt at rear; kineties spiralled when body contracts (Illustrated Guide, 1985).
Species: 300 μm long; no expansion or attenuation of the body (?); peristome 1/2 body length; simple ovoid macronucleus; (Carey, 1992). 150-400 μm long; with one, oval macronucleus (How to know the protozoa, 1979).

Spirostomum teres, cell body 194 μm long, 27 μm wide, peristome 78 μm long (2/5 of the body length), ovoid (or ellipsoid) macronucleus, a single macronucleus elongated ellipsoidal, 45 μm long, 11 μm wide, x 400, x 640, Mishima, Shizuoka Pref., Japan, July 2001 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Spirostomum teres Spirostomum teres
scale 31 μm scale 63 μm scale 94 μm; x 640
Spirostomum teres Spirostomum teres Spirostomum teres Spirostomum teres
Spirostomum teres Spirostomum teres Spirostomum teres Spirostomum teres

Please click on images for viewing enlarged.
Copyright Protist Information Server