A = Vegative cell with two chloroplasts (BF); B = Vegetative cells in chain (PC); C = Resting spores (BF). A-C=Living cells
Life-form: Cells united in short chains or solitary.
Size: Diameter = 5 - 17 µm, Pervalvar axis = 11-15 µm, Transapical axis = 7 µm
Resting spore: +
Note: Solitary specimens can be confused with solitary living species as e.g. Chaetoceros tenuissimus Meunier.
Distinctive features: Apertures narrow and divided in two parts. Mostly two chloroplasts.
Similar species: Chaetoceros tenuissimus
Distribution: Northern Atlantic and Northern Pacific.
Literature:
Cleve, P. T. 1896b. Redogörelse för de svenska
hydrografiska undersökningarne februari 1896. V.
Planktonundersökningar: Vegetabilskt plankton. Bih. Kongl.
Svensk. Vet.-Akad. Handl. 22(III, 5): 1-33.
Rines, J. E. B. & Hargraves, P. E. 1988. The Chaetoceros Ehrenberg (Bacillariophyceae) flora of Narragansett Bay, Rhode Island, USA. Bibliotheca Phycologica 79: 1-196.
Sundström, B. 1973. Chaetoceros arter i Öresund. MSc. Thesis Univ. of Lund. 77 pp.