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Heterotrichea: Heterotrichida: Stentoridae

Stentor polymorphus
(Müller 1773) Ehrenberg, 1830

Genus: When extended, trumpet-shaped or cylindrical; highly contractile; some with mucilaginous lorica; conspicuous peristomal field frontal; contractile vacuole anterior-left; fresh water (Kudo, 1966).
Species: Colorless; with symbiotic Chlorella; 1-2 mm long when extended; macronucleus beaded; anterior end expanded (Kudo, 1966). Elongate, may attain 1-2 mm; peristome wide; macronucleus moniliform; no somatic bristles; colourless but zoochlorellae may be present (Carey, 1992).
Cell body slenderly trumpet shaped, up to 2 mm long when fully extended; macronucleus moniliform (more than 10 connected beads); cortical granules colourless; with symbiotic green algae (Foissner and Wölfl, 1994).
->> Description at WPRNO Google Image Search
With algal endosymbioints; macronucleus moniliform
Stentor
S. polymorphus
410 x 100 μm
Shiba river
Owada Park
Saitama, 2005
Stentor polymorphus
S. polymorphus
380 x 50 μm
Banpaku memorial p.
Tsukuba
Ibaraki, 2006
Stentor
S. polymorphus ?
500 x 160 μm
Kabuto-yama
Nishi-no-miya
Hyogo, 2004
Stentor
S. polymorphus
or S. muelleri ?
1120 x 160 μm
Aizu Recreation p.
Aizuwakamatsu
Fukushima, 2005
Stentor polymorphus
S. polymorphus
or S. muelleri ?
μm
Miyatoko m.5
Minami-Aizu
Fukushima, 2008
S. polymorphus
or S. muelleri ?
μm
Japan, 1998
S. polymorphus
or S. muelleri ?
μm
Japan, 1998
S. polymorphus
or S. muelleri ?
μm
Japan, 1998

Similar species ->> Stentor pyriformis; Stentor polymorphus;


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Stentor polymorphus
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