Ciliates – SAR-Alveolata (Ciliophora)

Observations on Ascobius simplex

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Ascobius simplex (Dons, 1917) Hadži 1951

Most likely ID: n.a.

Basionym: Semifolliculina simplex Dons, 1917

Add’l Synonyms: n.a.

Data on the basionym according to Hadži, Jovan (1951). Studien über Follikuliniden: Študije o folikulinidah. Slovenska akademija znanosti in umetnosti.

Sampling date 10/2018. Scale bars indicate 50 µm.

Four images. The specimen was grown on a filament of the red alga Polysiphonia fibrillosa.

First and second:	Optical cross section through the cell body and the lorica, synoptical representation of the two peristome lobes.
Third:	The arrow indicates the chitinous connecting plate between the base plate and the lorica neck. This connection is a relevant identification feature for the species.
Fourth:	This image shows further relevant identification feature for the species: The nucleus appears rounded and compact, the holdfast tapering. The holdfast is shown in lateral view. A series of images of 12 optical sections depicted below shows that it must be broad and spatulate in top view. Identification according to Fauré-Fremiet 1936, The Biological Bulletin, MBL Woods Hole, MA.

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: Hiddensee Bodden (Germany)
Latitude: 54.582633 Longitude: 13.115051

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

Holdfast detail, all images of the lorica stack. The sequence shows that the holdfast appears broad and spatulate in top view.

Place name: Hiddensee Bodden (Germany)
Latitude: 54.582633 Longitude: 13.115051

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 Ascobius simplex

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