Diatoms – SAR-Stramenopiles (Bacillariophyta)

Observations on Porosira glacialis

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Porosira glacialis (Grunow) Jørgensen 1905

Most likely ID: n.a.

Basionym: Podosira hormoides var. glacialis Grunow 1884

Add’l Synonyms: Podosira glacialis (Grunow) Cleve 1896
                       Lauderia glacialis (Grunow) Gran 1900
                       Melosira glacialis (Grunow) A.Cleve 1951
                       Porosira antarctica O.G.Kozlova 1962

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Sampling date 04/2011. Scale bars indicate 100 µm (1), 50 µm (2, 3).

Three images.

First:	Long chain of Porosira glacialis. Note that the delicate spines of the Thalassiosirales are chitinous.
Second:	Close-up. Focus on frustule surface.
Third:	Focus on cell center showing cytoplasmic accumulation around the nucleus.

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: North Sea around Heligoland
Latitude: 54.186311 Longitude: 7.895034

Microscope Zeiss Universal, camera Olympus C7070WZ. DOF images.

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Scale bars indicate 50 µm.

Two images.

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: North Sea around Heligoland
Latitude: 54.186311 Longitude: 7.895034

Microscope Zeiss Universal, camera Olympus C7070WZ. DOF images.

Scale bar indicates 50 µm.

Place name: North Sea around Heligoland
Latitude: 54.186311 Longitude: 7.895034

Microscope Zeiss Universal, camera Olympus C7070WZ. DOF image.

© 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 Porosira glacialis

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