Zooplankton of the open Baltic: Extended Atlas - IOW

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Plate 4.3.3
Ciliophora, Pleurostomatida. Cytostome slit-like along edge of laterally
compressed body with circumoral ciliature showing left/right differentiation.
1, Litonotus cygnus, with long and thin neck region, body length 230 μm; 2,
Litonotus cygnus, posterior end of the cell, two macronuclear nodules
(arrows) and single contractile vacuole; 3, 4, Litonotus alpestris, small ciliate
(body length 25 μm) with slit-like oral aperture, equipped with distinct brush
of cilia, single contractile vacuole in the posterior end; 5, Litonotus alpestris,
distinct single macronucleus (arrow); 6, 7, Litonotus varsaviensis, with two
contractile vacuoles, body length 37 μm; 8, 9, Litonotus lamella, with single,
thorn-shaped rib (8, arrow), body length 90 μm; 10, Litonotus lamella,
anterior end with many conspicuous extrusomes and two macronuclear
nodules (arrow) (photos E. Mironova).
Photos 1, 2: live, BF; 3-10: live, DIC.
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