Pleodorina Pleodorina

Chlorophyceae: Volvocales: Volvocaceae
Volvocida: Volvocina: Volvocidae

Pleodorina californica
Shaw

Pleodorina Species: Colonies of 128 cells, of which 48-64 cells (anterior 1/3~1/2 of the cells in a colony) small, 8-15 μm in diam., others large, 30-35 μm in diam.; colonies spherical in shape, 150-200 μm in diam.; a cup-shaped chloroplast with a pyrenoid; (Illustrations of The Japanese Fresh-water Algae, 1977).
Similar genus -->> Eudorina;


Pleodorina japonica or P. californica ?, stock Ito-1, axenic culture with KCM and Hyponex (August 28 to October 04, 2002), about 1/4 of the cells in a colony small (somatic, 8 μm in diam.), reproductive cells 11 μm in diam., x 640, Otto-Numa (pond), Tsuchiura city, Ibaraki Pref., Japan, July 2002 by Y. Tsukii
Pleodorina Pleodorina
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Pleodorina Pleodorina Pleodorina Pleodorina
Mature cells 25 μm in diam. (reproductive) or 15 μm in diam. (non-reproductive)
Pleodorina Pleodorina
Pleodorina Pleodorina Pleodorina

Dividing cells, x 640
scale 31 μm scale 63 μm scale 94 μm; x 640
Pleodorina

Pleodorina californica Shaw: Colonies of 128 cells, of which 48-64 cells (anterior 1/3~1/2 of the cells in a colony) small, 8-15 μm in diam., others large, 30-35 μm in diam.; colonies spherical in shape, 150-200 μm in diam.; cells with a single cup-shaped pyrenoid; (Illustrations of The Japanese Fresh-water Algae, 1977).

* Pleodorina japonica Nozaki: Colonies of 128 or 64 cells arranged at the perphery of a gelatinous matrix(up to 300 μm long); anterior 1/5~1/4 of the cells in a colony small, obligately somatic, nearly spherical (up to 16 μm in diam.; remaining cells reproductive, large (up to 30 μm in diam.); both with two equal-length flagella, a stigma and many contractile vacuoles; reproductive cells with many pyrenoids, somatic cells with a single pyrenoid (Photomicrographs of the Freshwater Algae, vol. 10, 1989).

Pleodorina indica (Iyengar) Nozaki: Colonies of 128 or 64 or 32 cells arranged at the perphery of a gelatinous matrix(up to 300 μm long); anterior 1/5~1/3 of the cells in a colony small, obligately somatic, nearly spherical (up to 16 μm in diam.; remaining cells gradually increase in cell size from anterior to posterior pole (up to 25 μm in diam.); gelatinous matrix forming individual sheaths (Photomicrographs of the Freshwater Algae, vol. 10, 1989).


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