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Zooplankton of the open Baltic: Extended Atlas - IOW

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Plate 4.3.12<br />

Ciliophora, Heterotrichida. 1, 2, Sphaerophrya stentori, a parasitic<br />

suctorian ciliate (arrows) leaving it’s host Stentor sp.; 3, Sphaerophrya<br />

stentori, ciliated swarmer with four tentacles and conspicuous ovoid<br />

macronucleus, body length 15 μm; 4, Stentor roeselii, in mucous lorica, with<br />

distinct vermiform macronucleus (arrow), body length 800 μm; 5, Stentor<br />

roeselii, contracted; 6, Stentor roeselii, without mucous lorica, feeding on<br />

cyanobacteria colony; 7, 8, Stentor niger, brownish, with single ellipsoid<br />

macronucleus (8, arrow), body length 200 μm; 9, Stentor muelleri, colourless,<br />

with moniliform macronucleus (arrow), body length 600 μm (photos E.<br />

Mironova).<br />

Photos 1, 2, 4-9: live, BF; 3: live, PHC.<br />

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