Genus (Stein, 1863 or 1862?): Ovoid; an equatorial furrow marks conical anterior and spherical posterior parts;
in the furrow are inserted two (or more) rings of strong cilia; one directed anteriorly and the
other posteriorly; with tentacle-like retractile processes around the cytostome (Kudo, 1966).
Species: 20-31 μm long (Kudo, 1966). 20-38 μm long (How to know the protozoa, 1979). 20-30 μm long; anterior conical, posterior globose; nematodemata forked at the tip (Carey, 1992). |
50 μm
100 μm
150 μm; x 400
Mesodinium pulex,
cell body 25 μm long, 18 μm wide,
fed on Chlorogonium fusiforme,
x 400, Japan 1997 by Y. Tsukii
50 μm
100 μm
150 μm; x 400
A well fed cell, 34 μm long, 24 μm wide,
fed on Chlorogonium fusiforme,
x 400, Japan 1997 by Y. Tsukii
50 μm
100 μm
150 μm; x 400
M. acarus Stein: Oral tentacles with capitate tip; 10-16 μm long (Kudo, 1966).