Choanocystis sp.
Genus: Free-living; skeleton with or without coat; cuirass made of scales and of the basal part
of the spicules; coat indistinguishable (Illustrated Guide, 1985).
Siliceous scales arranged tangentially and radiating siliceous spines with pointed or
bifurcated ends; (Kudo, 1966).
Species: Tangential scales stut and pointed; spines curved and nail-headed; a single contractile
vacuole; diameter 35-40 μm;
spines about 1/3 the body diameter (Kudo, 1966).
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Choanocystis Penard ?,
cell body μm long, μm wide, L/W=,
x 640, No. 2, Oyumi-ike (a pond), Chuo-ku, Chiba City, Chiba Pref., Japan, December 24, 2007 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Images of collecting locality:
No. 2, Oyumi-ike (a pond), Chuo-ku, Chiba City, Chiba Pref., Japan, December 24, 2007 by Y. Tsukii
Please click on images for viewing enlarged.
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