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Eukaryotic microbial life at abyssal depths remains "uncharted territory" in eukaryotic microbiology. No phylogenetic surveys have focused on the largest benthic environment on this planet, the abyssal plains. Moreover, knowledge of the spatial patterns of deep-sea community structure is scanty, and what little is known originates primarily from(More)
Due to the significant lack of information on the community structure of deep-sea nanoflagellates and other nanofauna components as a potentially important component of deepsea matter fluxes, the aim of the present study was to check whether there is a specific deep-sea nanofauna (<20 μm) community. Studies were carried out in the deep oligotrophic basins(More)
Spumochlamys perforata n. sp. and Spumochlamys bryora n. sp. were isolated and described from dry epiphytic moss. The morphology and ultrastructure of both species clearly demonstrate that they belong to the genus Spumochlamys (family Microchlamyiidae). They differ from its only described member, Spumochlamys iliensis (as well as from species of(More)
Knowledge of the spatial scales of diversity is necessary to evaluate the mechanisms driving biodiversity and biogeography in the vast but poorly understood deep sea. The community structure of kinetoplastids, an important group of microbial eukaryotes belonging to the Euglenozoa, from all abyssal plains of the South Atlantic and two areas of the eastern(More)
Many of the flagellates inhabiting the hindgut of lower termites are associated with ectobiotic, rod-like bacteria or spirochetes. Different types of attachment sites are present. Electron dense material underlies, e.g., the plasma membrane ofJoenia annectens at the contact site, whereas other attachment sites do not show any visible specializations. The(More)
Phagocytosis and digestion in Climacostomum virens were investigated using the flagellate Chlorogonium elongatum as food. The flagellates are pushed through the buccal tube to be enclosed in food vacuoles in the cytopharyngeal region at the base of the buccal tube. Cytopharyngeal vesicles contribute membrane to the forming food vacuoles. Within 3–5 min(More)
Die aufgelisteten Manuskripte/Publikationen sind im Zuge der Dissertation entstanden. Anteile an der Erstellung sind vermerkt. Manuskript 1 Beckers P, J von Döhren & T Bartolomaeus (zur Publikation angenommen) Reproduction in Lineus viridis (Heteronemertea) indicates pheromone mediated mating behaviour. Marine Biology Anteile an der Arbeit: Manuskript 3(More)
The gulper Pseudomicrothorax dubius ingests a large volume of filamentous blue-green algae within 1–2 min. Immediately after this rapid phagocytosis, the food is enclosed in a single, extremely large food vacuole, which fills up the ciliate almost entirely. During the following hour this giant food vacuole vesiculates. Finally numerous small vacuoles are(More)
Spumochlamys iliensis n. g., n. sp. was isolated from a mineral pond in an arid, semi-desert region in Kazakhstan (Central Asia). This amoeba is covered with a plate-shaped, flexible organic spongious test. The thin membranous margin of this test extends ventrally to surround a flexible ventral aperture. In its morphological features and behaviour this(More)