Zooplankton of the open Baltic: Extended Atlas - IOW

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Plate 4.3.9
Ciliophora, Hymenostomata. 1, 2, 3, Cinetochilum margaritaceum, small
scuticociliate (body length 20 μm) with few long caudal cilia at posterior end,
subequatorial oral apparatus (1, arrow) and a contractile vacuole opposed to it
(2, arrow); 4, Ctedoctema acanthocryptum, slender-ellipsoid scuticociliate
with distinct extrusomes in pellicle, contractile vacuole located posteriorly,
blister in posterior end (arrow) is usual for dying ciliates; 5, 6, Ctedoctema
acanthocryptum, large undulating membrane is conspicuous (5, arrow), body
length 30 μm; 7, 8, Ctedoctema acanthocryptum, cell division; 9, 10,
Uronema marinum, scuticociliate, with small indentation in anterior third of
the cell, single caudal cilium is present (10, arrow), contractile vacuole
located posteriorly; 11, Uronema marinum, undulating membrane is small,
inconspicuous (arrow), body length 20 μm (photos E. Mironova).
Photos 1-4, 6-11: live, DIC; 5: live, PHC.
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