Chaetoceros constrictus Gran, 1897

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Chaetoceros constrictus

Two resting spores (DIC).

Photographer/artist Mats Kuylenstierna

Additional image information

Title
Chaetoceros constrictus
Photographer/artist
Mats Kuylenstierna
Copyright holder
Maria Kuylenstierna
Copyright stamp
Maria Kuylenstierna
Institute
Dept. of Marine botany, University of Gothenburg
Contributor
Bengt Karlson
Caption
Two resting spores (DIC).
Geographic area
Skagerrak - Swedish coast
License
Creative Commons Attribution-NoDerivs 3.0 Unported
Technique
Light microscopy
Preservation
No preservation
Contrast enhancement
DIC/Nomarski
Stain
No stain
Image galleries
Kuylenstierna, Skagerrak-Kattegat, Diatom resting stages

Description

IDs in other systems
Tropic type
A
Morphology
Conspicuous constriction between valve mantle and girdle, two chloroplasts, apertures lanceolate, resting spores uniequally vaulted and with spines
Other remarks

Distribution: Northern hemisphere
Life form
Cells united in chains
Size
Diameter = 12-40 µm
Resting spore
+
Literature
Cupp, E. E. 1943. Marine Plankton Diatoms of the West Coast of North America. Bulletin of the Scripps Inst. Oceanogr. of the University of California. 5: 1-237.
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.
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.

Biovolumes

Species Chaetoceros constrictus
Author Gran 1897
Division CHRYSOPHYTA (HETEROKONTOPHYTA)
Class Diatomophyceae (Bacillariophyceae)
Order EUPODISCALES (BIDDULPHIALES, CENTRALES)
Trophy AU
Geometric shape oval cylinder
Formula p/4*d1*d2*h
Size class 1 2 3 4 5
Unit cell cell cell cell cell
Size range 14-15x15 16x16 19x19 30x30 10-14x8
Height(h), µm 15.0 16.0 19.0 30.0 8.0
Diameter(d1), µm 15.0 16.0 19.0 30.0 12.0
Diameter(d2), µm 14.0 16.0 14.0 15.0 10.0
No. of cells/counting unit 1 1 1 1 1
Calculated volume, µm3 2 473 3 215 3 967 10 598 754
Calculated Carbon pg/counting unit 163 201 239 529 62

Source

Olenina, I., Hajdu, S., Edler, L., Andersson, A., Wasmund, N., Busch, S., Göbel, J., Gromisz, S., Huseby, S., Huttunen, M., Jaanus, A., Kokkonen, P., Ledaine, I. and Niemkiewicz, E. 2006 Biovolumes and size-classes of phytoplankton in the Baltic Sea HELCOM Balt.Sea Environ. Proc. No. 106, 144pp. (PDF),
PEG_BVOL.zip

Change History

  • 2011-12-05 15:47:38 Malin Mohlin - Updated media metadata for Chaetoceros constrictus_3.jpg
  • 2011-12-05 15:46:07 Malin Mohlin - Added media: Chaetoceros constrictus_3.jpg
  • 2011-09-26 14:07:56 Bengt Karlson - Updated media metadata for Chaetoceros constrictus_2.gif
  • 2011-09-26 12:45:43 Bengt Karlson - Updated media metadata for Chaetoceros constrictus_2.gif
  • 2011-09-20 20:24:21 Bengt Karlson - Updated media metadata for Chaetoceros constrictus_2.gif
  • 2011-09-20 20:22:44 Bengt Karlson - Added media: Chaetoceros constrictus_2.gif