Testate Amoebae –
Amoebozoa (Part), Stramenopiles (Part), Rhizaria (Part)

Observations on Pseudonebela africana

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Taxonomic tree according to Lahr et al., 2019 (https://doi.org/10.1016/j.cub.2019.01.078)
and González-Miguéns et al., 2022 (https://doi.org/10.1016/j.ympev.2022.107557)

Amorphea Adl et al., 2012
Amoebozoa Lühe, 1913, renewed definition Cavalier-Smith, 1998
● Tubulinea Smirnov et al., 2005
●● Elardia, Kang et al., 2017
●●● Order Arcellinida Kent, 1880

Pseudonebela africana Gauthier-Lièvre, 1953

Most likely ID: n.a.

Basionym: n.a.

Add’l Synonyms: n.a.

Sampling date 06/2024. Scale bars indicate 25 µm, (1), 100 µm (2), 50 µm (3).

Three images, two of them in a slide changer.

First and second:	Difflugia rubescens feeding on Micrasterias denticulata. Near the aperture (pseudostome) of the amoeba, several excreted fecal pellets are visible, one of which can be seen at the entrance to the pseudostome.
Third:	Overview image showing both organisms.

Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!

Place name: Wetland Lauchseemoor, Fieberbrunn (Tyrol, Austria)
Latitude: 47.46954439 Longitude: 12.53826499

Microscope Zeiss Universal, camera Olympus OM-D M5 MKII. DOF images.

Sampling date 06/2024.

Pseudonebela africana has a very special way of feeding:
These amoebae are capable of piercing the cellulose walls of desmids and ingesting their cell contents. Their aperture is serrated; for details, see https://arcella.nl/pseudonebela-africana/.
The side-view images of the test above provide a glimpse of these teeth (arrows).

Two images in a slide changer.

Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!

Place name: Wetland Lauchseemoor, Fieberbrunn (Tyrol, Austria)
Latitude: 47.46954439 Longitude: 12.53826499

Microscope Zeiss Universal, camera Olympus OM-D M5 MKII. DOF images.

© Wolfgang Bettighofer,
images under Creative Commons License V 3.0 (CC BY-NC-SA).
For permission to use of (high resolution) images please contact postmaster@protisten.de.

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Observations on Pseudonebela africana

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