image_list image_listE

Euglenophyceae: Euglenales
Euglenida:

Astasia sp.

Genus: Only 1 flagellum emergent from canal, colourless; eyespot absent; cell body fusiform or elongated, plastic, with pronounced euglenoid movement; many species, mostly freshwater (Illustrated Guide, 1985).
Species:

Astasia sp. or similar species, cell body 23 μm long, 5 μm wide, x 640, drainage ditch, Uruido, Hasuda city, Saitama Pref., Feburary 6, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Astasia Astasia

Astasia longa Pringsheim, 1936: Cell body spindle in shape, posterior end slightly pointed, 55-60 μm long, 8 μm wide (fixed sample); a locomotive flagellum 1/3 0 1/2 of the cell body in length; paramylon bodies bar-shaped or ellipsoidal, small (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000). Cell body 70-96 μm long, 10-14 μm wide, two large paramylon bodies ring-shaped (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000). Outline shape similar to that of Euglena gracilis (How to know the protozoa, 1979).

Astasia lagenula Schewiakoff: Cell body cylindroid with posterior end rounded, 45 μm long, 10 μm wide; a flagellum more or less longer than the body length; ovoidal paramylum granules (WPRNO).

Astasia klebsi :

Astasia dangeardi : Outline shape similar to that of Euglena rostrata (How to know the protozoa, 1979).

Astasia captiva :

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