image_list image_listE

Heterotrichea: Heterotrichida: Spirostomatidae

 Spirostomum filum
(Ehrenberg, 1838) Claparède and Lachmann, 1858
Syn. Uroleptus filum Ehrenberg, 1838

Spirostomum filum Genus: Body blunt at rear; kineties spiralled when body contracts (Illustrated Guide, 1985).
Species: 200-300 up to 700 μm long; peristome 1/4 the body length; macronucleus oval; posterior end drawn out (Kudo, 1966). 700 μm long; tail region attenuated; peristome less than 1/4 the body length; macronucleus single and ovoid (Carey, 1992).

Spirostomum filum (Ehrenberg) Claparède and Lachmann, cell body 330 μm long, 18 μm wide, L/W=18.3, x 200, x 400, No.1, Karakemi marsh, Yasaka, Omachi city (formerly Yasaka village), Nagano Pref., Japan, June 4, 2007 by Y. Tsukii
scale 200 μm scale400 μm scale600 μm; x 100
Spirostomum filum Spirostomum filum Spirostomum filum Spirostomum filum

Images of collecting locality: No.1, Karakemi marsh, Yasaka, Omachi city (formerly Yasaka village), Nagano Pref., Japan, June 4, 2007 by Y. Tsukii

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