Navicula Bory de Saint-Vincent 1822

Navicula (na-vick-you-la), small to medium pennate diatom, common in sediments. With browny coloured plastid located around the edges of the cell. Refractile globules are lipid inclusions. The cell is located within a shell (frustule) made of silica (glass) and the patterns of pores and strengthening elements is used to distinguish different taxa. Differential interference contrast.

Two kinds of specialized membrane-bound organelles, the brown chloroplast and the stringy-looking mitochondria, are clearly visible inside this Navicula.

Collected from Cumloden Swamp on April 18, 2004.

A common planktonic pennate diatom.

Material from the Netherlands.

Sampling date 04/2011. Scale bar indicates 50 µm.Navicula spec. in mucilaginous sheath. The gelatinous tubes created by the diatoms in these images (also) serve as protection against grazing.Place name: North Sea around Heligoland Latitude: 54.186311     Longitude: 7.895034Microscope 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.For further information about the image, please click here: Link to protisten.de page

Sampling date 04/2011. Scale bar indicates 50 µm.Navicula spec. in mucilaginous sheath. Place name: North Sea around Heligoland Latitude: 54.186311     Longitude: 7.895034Microscope 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.For further information about the image, please click here: Link to protisten.de page

Sampling date 04/2010. Scale bars indicate 200 µm (1) and 100 µm (2).Two images.First:      Navicula spec. in mucilaginous sheath accompanied by the green alga Ulothrix carmichaelii.Second: Magnified view of the gelatinous tube of the diatoms.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: 7.895034Microscope 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.For further information about the image, please click here: Link to protisten.de page

Sampling date 04/2010. Scale bars indicate 200 µm (1) and 100 µm (2).Two images.First:      Navicula spec. in mucilaginous sheath accompanied by the green alga Ulothrix carmichaelii.Second: Magnified view of the gelatinous tube of the diatoms.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: 7.895034Microscope 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.For further information about the image, please click here: Link to protisten.de page

Sampling date 09/2009. Scale bar indicates 50 µm.Navicula oblonga cell in valvar view (above) and an optical cross-section in a cingular projection showing the nucleus, the two chloroplasts and two oil droplets.Place name: Lake Constance vicinity of Bodman (Germany) Latitude: 47.796494     Longitude: 9.047656Microscope 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.For further information about the image, please click here: Link to protisten.de page

Sampling date 2/2017. Scale bar indicates 25 µm.Place name: Lake Fuhlensee near Schilksee (Kiel, Germany) Latitude: 54.43136338     Longitude: 10.16243935Microscope Zeiss Axioplan, camera  Olympus OM-D M5 MKII. 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.For further information about the image, please click here: Link to protisten.de page