Thalassiosira rotula Meunier 1910

A = Chain at two focal planes; B = Two living cells in valve view and girdle view (arrow=special band); C = Cleaned valve (DIC)

Valve SEM


Life-form: Cells united in chains

Size: 8-55 µm

Resting spore:

Note: T. gravida and T. rotula may be the same species (Syvertsen 1977)

Distinctive features: Structure of valve face and band next to valvocopula

Similar species:

Distribution: Widely

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.

Syvertsen, E. E. 1977. Thalassiosira rotula and T. gravida : Ecology and morphology. Beih. zur Nova Hedwigia. 54: 99-112.

  Copyright © 1996-2006, Mats Kuylenstierna & Bengt Karlson All rights reserved.
Last modified on 15 September, 2006

Swedish Meteorological and Hydrological Institute

Department of Marine Ecology, Göteborg University, Sweden