| Vorticella chlorostigma, a peritrich species with symbiotic zoochlorellae (1) |
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| Vorticella chlorostigma; focus plane on the cortex. |
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| Vorticella chlorostigma: specimen from (2) |
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| Vorticella chlorostigma: specimen from (2); detail of the cortex |
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| Location: Glörtalsperre, En-Kreis (1); NSG Heiliges Meer, NRW, Germany, "Seerosenteich" (2) |
| Habitat: Plankton (1); between algae (2) |
| Date: 26.6.2009 (1); 27.04.2019 (2) |
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