A&B = Spirally twisted chain (PC&DIC); C = Production of auxospores (DIC); D = Frustules with conspicuous basal part of setae (PC); E = Valve view (observe setae) (BF)
Life-form: Cells united in chains
Size: Diameter = 10-40 µm
Resting spore: +
Note:
Distinctive features: Chains spirally twisted, basal part of setae distinct, setae extending outward from the spiral, resting spore
Similar species: Chaetoceros curvisetus
Distribution: Worldwide mainly in cold waters
Literature:
Cleve, P. T. 1894. II. Planktonundersökningar, Cilioflagellater
och Diatomacéer. Bih. Kongl. Svensk. Vet.-Akad. Handl. 20(III,
2): 1-16.
Drebes, G. 1974. Marines Phytoplankton, Eine Auswahl der Helgoländer Planktonalgen (Diatomeen, Peridineen). Georg Thieme Verlag, Stuttgart. 186 pp.
Hasle, G. R. & Syvertsen, E. E. 1996. Marine diatoms. In: Tomas, C. R. (ed.) Identifying marine diatoms and dinoflagellates. Academic Press, Inc., San Diego, p. 5-385.
Hendey, N. I. 1964. An introductory account of the smaller algae of British coastal waters. Part 5: Bacillariophyceae (Diatoms). HSMO, London. 317 pp.
Rines, J. E. B. & Hargraves, P. E. 1988. The Chaetoceros Ehrenberg (Bacillariophyceae) flora of Narragansett Bay, Rhode Island, USA. Bibliotheca Phycologica 79: 1-196