| Vorticella convallaria; (1) |
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| Vorticella convallaria; swarmers(1) |
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| Vorticella convallaria; (1) |
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| Vorticella convallaria; focus plane on the J-shaped macronucleus (arrowheads) (1) |
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| Location: Hattingen Felderbachtal Haselbecke pond |
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Habitat: Neuston (click image to enlarge >>>) |
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| Date: 26.04.2020 |
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