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Heterotrichea: Heterotrichida: Stentoridae

Stentor pyriformis
Johnson 1893

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: Cell body broadly trumpet shaped, up to 700 μm long when fully extended; macronucleus consists of two (rarely one, three, four or five) isolated beads; cortical granules colourless; with symbiotic green algae (Foissner and Wölfl, 1994).
Tohoku ------------------------------------------------------------------------
Stentor
S. pyriformis
230 x 125 μm
Tashirodaira m.
Hakkoda mountain
Aomori, 2005
Stentor
S. pyriformis
280 x 190 μm
Tashirodaira m.
Hakkoda mountain
Aomori, 2006
Stentor pyriformis
S. pyriformis
220 x 120 μm
Kenashitai
Hakkoda mountain
Aomori, 2005
Stentor pyriformis
S. pyriformis
μm
Kuroyachi marsh
Hachimantai
Iwate, 2007
Stentor
S. pyriformis
340 x 170 μm
Sensho-ga-hara
Shizukuishi
Iwate, 2007
Stentor
S. pyriformis
300 x 160 μm
near Ningyo-ishi
Azuma mt.
Yamagata, 2007
Stentor pyriformis
S. pyriformis
492 x 240 μm
Jodo-daira 3
Azuma mountain
Fukushima, 2006
Stentor pyriformis
S. pyriformis
400 x 296 μm
Jodo-daira 2
Azuma mountain
Fukushima, 2006
Kanto ------------------------------------------------------------------------
Stentor
S. pyriformis
μm
Yokotashiro 2
Katashina
Gunma, 2007

S. pyriformis
Kinu-numa m.
Nikko
Tochigi, 2010

Stentor
S. fuliginosus ?
or S. pyriformis ?
μm
USA, 1999
Movies
Stentor
S. fuliginosus
or S. pyriformis ?
μm
Ko-numa
Tsukiyono
Gunma, 2003

Similar species ->> Stentor fuliginosus; Stentor polymorphus;


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Stentor pyriformis
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