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Spirotrichea: Hypotrichia: Euplotida: Euplotidae

Euplotes sp.
Ehrenberg, 1830 (1831?)

Euplotes Genus: Body ovoid, inflexible; ventral surface flattened, dorsal surface convex; peristome broadly triangular (Kudo, 1966). Cell body is ovoid, dorsoventrally flattened; dorsal surface may be equipped with some ornamentation; three groups of cirri (frontoventral, transverse & caudal); macronucleus C-shaped, "3"-shaped, or horsehoe-shaped (Carey, 1992).
Species:


Euplotes sp., cell body 75 μm long, 59 μm wide, peristome about 2/3 of the body length, 5 transverse cirri, ventrally ridged, x 400, x 640, Uruguay, November 1999, photo by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Euplotes Euplotes Euplotes Euplotes

Euplotes, 65 μm long, 45 μm wide, peristome about 2/3 of the body length, 5 transverse cirri, four dorsal ridges, x 400, x 640, Uruguay, November 1999, photo by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Euplotes Euplotes
Cyst formation
Euplotes Euplotes Euplotes Euplotes Euplotes Euplotes

E. aspheronicus Agamaliev, 1966: Cell body ellipsoid, not ornamented, 60 μm long; peristome 1/2 of the body length; 9 frontoventral, 5 transverse, 4 caudal cirri; macronucleus C-shaped (Carey, 1992).

E. zenkewitchi Burkovsky, 1970: Cell body elongate rather than ovoid, not ornamented, 80 μm long; peristome narrow, 1/2 of the body length; 9 frontoventral, 5 transverse, 3 or 4 caudal cirri; macronucleus C-shaped (Carey, 1992).

E. cristatus Kahl, 1930-5: Cell body small and ovoid, dorsally six prominent ridges, 60 μm long; peristome narrow, 1/2 of the body length; 10 frontoventral, 5 transverse, 4 caudal cirri; macronucleus C-shaped (Carey, 1992).


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