Zooplankton of the open Baltic: Extended Atlas - IOW

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Plate 4.3.10
Ciliophora, Hymenostomata. 1, Cristigera setosa, scuticociliate with very
large undulating membrane (arrow), ciliation is typically sparse in mid-body,
posteriorly it is reduced to a few long rigid cilia, body length 25 μm; 2, 3,
Cyclidium citrullus, scuticociliate with small bumps at either end of the body,
the posterior end is slightly notched (3, arrow), body length 18 μm; 4, 5,
Cyclidium citrullus, with single caudal cilium, contractile vacuole is located
posteriorly, buccal area extends to two-thirds of the body length (5, arrow); 6,
7, 8, 9, Cyclidium glaucoma, barrel-shaped scuticociliate with single caudal
cilium, contractile vacuole in posterior end (6, arrow) and buccal apparatus
which extends only half-way down the body (8, arrow), body length 15 μm;
10, 11, Cyclidium candens, elongated scuticociliate with domed anterior (10,
arrow), longitudinal ridges in the pellicle and a single long caudal cilium,
body length 20 μm; 12, Cyclidium candens, sail-like undulating membrane is
conspicuous (arrow) (photos E. Mironova).
Photos 1-5: live, PHC; 6-12: live, DIC.
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