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Zooplankton of the open Baltic: Extended Atlas - IOW

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Plate 4.3.1<br />

Ciliophora, Prostomatida. Apical cytopharynx is supported by welldeveloped<br />

nematodesmata. 1, 2, Placus luciae, with pellicle furrowed spirally<br />

and distinct dorsal brush which terminates in <strong>the</strong> small depression (2, arrow);<br />

3, Placus luciae, with single ovoid macronucleus (arrow), body length 80 μm;<br />

4, Coleps hirtus, barrel-shaped ciliate with fenestrated armour plates, body<br />

length 45 μm; 5, Coleps elongatus, cylindrical, a few spines are present in <strong>the</strong><br />

caudal area, body length 55 μm; 6, 7, 8, Coleps elongatus, carnivorous ciliates<br />

gobbling up Urocentrum turbo; 9, 10, Urotricha armata, small ciliate, 35 μm<br />

in size, with characteristic single caudal cilium (9, arrow), ovoid<br />

macronucleus and conspicuous layer <strong>of</strong> trichocysts underneath pellicle<br />

(photos E. Mironova).<br />

Photos 1-3, 9, 10: live, differential interference contrast (DIC); 4: live, phasecontrast<br />

(PHC); 5-8: live, bright-field (BF).<br />

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