Thalassiosira punctigera (Castracane) Hasle 1983

A = Two living cells united with a thin connecting thread (=arrowhead) (BF); B = Cell in valve view; C = Frustule in girdle view (arrow=Occluded process)

Pictures of details

Synonym(s): Ethmodiscus punctiger Castracane 1886 , Thalassiosira angstii (Gran) Makarova 1970

Life-form: Solitary or chain-forming

Size: Diameter = 40-186 µm

Resting spore:

Note: Occluded processes may be missing

Distinctive features: Occluded processes, strutted processes and ribbed valve margin

Similar species: Thalassiosira licea, T. lundiana

Distribution: Widely

Hasle, G. R. 1983a. Thalassiosira punctigera (Castr.) comb. nov., a widely distributed marine planktonic diatom. Nordic Journal of Botany. 3: 593-608.

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.

Takano, H. 1990. Diatoms. In "Red tide organisms in Japan-An illustrated taxonomic guide". (Y. Fukuyo, H. Takano, M. Chihara & K. Matsuoka eds) . Uchida Rokakuho, Tokyo, p. 162-331.

  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