Anabaena Bory de Saint-Vincent ex Bornet & Flahault 1886

Anabaena (ann-a-bean-a) a filamentous blue green algae, with differentiated cells within the filament. The central cell is a heterocyst, the site of nitrogen fixation. Differential interference microscopy. data on this strain.

Anabaena (ann-a-bean-a) filamentous blue-green alga (cyanobacterium), some cells are different to others. They are referred to as heterocysts, and seem to be specialised to carry out nitrogen fixation. Differential interference contrast.

Anabaena. Cell observed in freshwater sediments in the vicinity of Broome, Western Australia in September 2003. This image was taken using differential interference contrast optics.   This work was supported by the Australian Biological Resources Study.

A gliding filamernt of Anabaena, a couple of heterocysts are visible within the filament.

Filaments of Anabaena. The species may form heterocysts (thick walled cell, lower filament last complete cell on the right) and also resistant cells such as the long cylindrical cell. Phase contrast microscopy.

Several filaments of a blue green alga that does not form heterocysts. This image taken after most of the water had dried out and illustrates how microbes may survive in very very thin films of water (in this case only a few microns thick). Differential intereference contrast optics.

Sampling date 06/2011. Scale bar indicates 25 µm.Place name: Wetland at the Pillersee (Tyrol, Austria).Latitude: 47.531785     Longitude: 12.573095Microscope Zeiss Universal, camera Canon EOS 600D. 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 09/2010. Scale bar indicates 50 µm.Place name: Bog Hegne Moor near Lake Constance (Germany).Latitude: 47.718106     Longitude: 9.093974Microscope Zeiss Universal, camera Olympus C7070. 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