Chrysochromulina birgeri Hällfors et Niemi 1974

A-C = Living cells and one collapsed (A,I arrow=nuclei) (A,B DIC, C PC); D = Cell with four flagella, Lugol. (PC); E = Chloroplasts in epifluorescence; F = Large scales with two horns (PC); G-J = Lugol fixed cells, notice haptonema in H. (DIC)


Life-form: Solitary

Size: length = 13-24 (31) µm, width = 8-11 µm

Resting spore: -

Note: Most often in or below ice

Distinctive features: Cells with two or four flagella, Two distinct size groups of almost identically constructed scales

Similar species:

Distribution: Southern coast of Finland, Swedish West coast, Japan (Takahashi, E. 1981 in Hällfors 1989)

Hällfors, G. & Niemi, Å. 1974. A Chrysochromulina (Haptophyceae) bloom under the ice in the Tvärminne Archipelago, southern coast of Finland. Memoranda Soc. Fauna Flora Fennica. 50: 89-104.

Hällfors, G. 1989. Chrysochromulina birgeri G. Hällfors et Niemi (Prymnesiophyceae). Baltic Sea Phytoplankton Identification Sheet No. 2. Ann Bot. Fennici. 26: 91-92.

Hällfors, G. & Thomsen, A. 1979. Further observations on Chrysochromulina birgeri (Prymnesiophyceae) from the Tvärminne archipelago, SW coast of Finland. Acta Bot. Fennica. 110: 41-46.

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Last modified on 15 September, 2006

Swedish Meteorological and Hydrological Institute

Department of Marine Ecology, Göteborg University, Sweden