Home / Cyanobacteria / Filaments / Unbranched / Untapered / Heterocysts / No_visible_sheath / Anabaena / Images

Anabaena (Cyanophyceae)

Anabaena. spiroides from a lake in New Hampshire USA

 

Anabaena. spiroides from a lake in New Hampshire USA with some Microcystis/Woronichinia colonies

 

Anabaena. spiroides from a lake in New Hampshire USA

Anabaena. spiroides from a lake in New Hampshire USA.  "Polar plugs" that greatly reduce diffusion of oxygen from adjacent cells are clearly visible in the two heterocysts.

 

Anabaena. spiroides from a lake in New Hampshire USA

Anabaena. spiroides from a lake in New Hampshire USA, with attached ciliates

Anabaena. sp. from a lake in New Hampshire USA.  Open ring formation

 

Anabaena. sp. from a lake in New Hampshire USA.  Mainly akinetes (spores), some with attached heterocysts, from Willand Pond, Dover, NH USA

 

Anabaena. sp. from a lake in New Hampshire USA

 

Anabaena sp.  Nicely stained sheath brings into question whether unstained specimens lack a visible sheath.
Modified from image at nifty.com

 

Anabaena sp.  Illustrates polar plugs of heterocyst. Modified from image (0013L) at nies.go.jp

 

Anabaena sp. with a clear heterocyst and a granular akinete surrounded by watery (low viscosity) sheath, . Modified from image at nifty.com

 

Clear heterocyst, granular akinete and vegetative cells. Modified from image (0008L) at the National Institute of Environmental Science, Japan

 

Anabaena circinalis with cylindrical cells.
Modified from image (0006) at the National Institute of Environmental Science, Japan

 

Anabaena sp.  Cluster of akinetes in late autumn after lysis of vegetative cells, 9 Nov 2009
Goose Pond, New Hampshire USA

 

Anabaena sp. Cluster of akinetes in late autumn after lysis of vegetative cells 9 Nov 2009
Goose Pond, New Hampshire USA

 

Anabaena sp. Cluster of akinetes in late autumn after lysis of vegetative cells 9 Nov 2009
Goose Pond, New Hampshire USA

 

Cluster of akinetes in late autumn after lysis of vegetative cells
Goose Pond, NH, 9 Nov 2009

 

Anabaena sp. Cluster of akinetes in late autumn after lysis of vegetative cells 9 Nov 2009
Goose Pond, New Hampshire USA

 

Anabaena sp. with sheath (rare!) and intercalary heterocyst from Goose Pond, Shapleigh Maine USA 25 Oct 2014

 

Anabaena flos-aquae
Photograph and identification by Rogelio Zimbron, Green Mountain Antibodies, Burlington, VT USA

 

Anabaena cylincrica Lemm.
Modified from sketch by Thérézien, Y. and A. Couté (1977) from the collection of Manfred Bölter, University of Kiel, DE

Thérézien, Y. and A. Couté  1977.  Algues d’eau douce des Îles Kerguelen et Crozet. Comite Nation Franc Rech Antarct 43: 1-91

 

 

 

Home / Cyanobacteria / Filaments / Unbranched / Untapered / Heterocysts / No_visible_sheath / Anabaena / Images