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| Didinium nasutum Müller, 1773 Stein, 1859 |
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| Didinium nasutum: in contrast to Monodinium balbiani (which has a single ciliary girdle) this species has two ciliary girdles : anterior and posterior (arrowheads). The small triangles mark the extrusomes in the probiscis. Ma: macronucleus; KV: contractile vacuole. Specimen from (2) |
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| Didinium nasutum: focus plane on the dorsal brush (DB) . Specimen from (3) |
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| Didinium nasutum: same specimen; focus plane on the macronucleus (ma). |
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| Didinium nasutum: macronucleus. |
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| Nasentierchen (Didinium nasutum): specimen from (1) |
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Location (3): Kemnader See near Oveney, Bochum, NRW, Germany, billabong; |
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| Habitat(3): border between plankton/psammon |
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| Date (3): 11.02.2020 |
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