Karenia mikimotoi (Miyake & Kominami ex Oda) G. Hansen & Ø. Moestrup

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Karenia mikimotoi

Photographer/artist Malin Mohlin

Additional image information

Karenia mikimotoi
Malin Mohlin
Copyright holder
Malin Mohlin
Copyright stamp
Malin Mohlin
Swedish meterological and hydrological institute
Malin Mohlin
Geographic area
Skagerrak - Swedish coast
Creative Commons Attribution-NoDerivs 3.0 Unported
Light microscopy
No preservation
Contrast enhancement
No stain
Image galleries


IDs in other systems
Note on taxonomy
This is just a test to see what shows up in the change history.
The cells flattened dorso-ventrally, nucleus ellipsoidal and on the left side, chloroplasts with pyrenoids
Other remarks
Toxic and a red-tide causing organism. Often referred to Gyrodinium aureolum in european waters
Distribution: Worldwide
Harmfulness, IOC
This species is included in the IOC-UNESCO Taxonomic Reference List of Harmful Micro Algae.
Life form
Length 18-37 µm, width 14-35 µm
Culture collections
The Scandinavian Culture Collection of Algae and Protozoa at the University of Copenhagen
More info at http://www.sccap.dk.
Strains: K-0260
Partensky, F., Vaulot, D. Couté, A. & Sournia, A. 1988. Morphological and nuclear analysis of the bloom-forming dinoflagellates Gyrodinium cf. aureolum and Gymnodinium nagasakiense. J. Phycol. 24: 408-415.
Steidinger, K. A. & Tangen, K. 1996. Dinoflagellates. In: Tomas, C. R. (ed.) Identifying marine diatoms and dinoflagellates. Academic Press, Inc., San Diego, p. 387-584.
Takayama, H. 1990. Dinoflagellates. In “Red tide organisms in Japan-An illustrated taxonomic guide”. (Y. Fukuyo, H. Takano, M. Chihara & K. Matsuoka eds)Uchida Rokakuho, Tokyo. P. 48-49
Takayama, H. Matsuoka, K. & Fukuyo, Y. 1998. A taxonomic study on Gyrodinium aureolum Hulburt (Dinophyceae) from the morphological viewpoint based on materials collected in Japanese coastal waters. Bull. Plankton Soc. Japan. 45: 9-19.


Species Karenia mikimotoi
Author (Miyake et Kominami ex Oda) G. Hansen & Moestrup 2000
Class Dinophyceae
Trophy AU
Geometric shape flattened ellipsoid
Formula p/6*l*d1*d2
Size class 1 2
Unit cell cell
Size range 20-25 26-30
Length(l1), µm 23.0 28.0
Diameter(d1), µm 20.0 23.0
Diameter(d2), µm 15.0 19.0
No. of cells/counting unit 1 1
Calculated volume, µm3 3 611 6 404
Calculated Carbon pg/counting unit 473 810


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),

Change History

  • 2012-10-05 13:08:47 Ann-Turi Skjevik - Deleted media: Karenia mikimotoi_4.jpg
  • 2012-10-05 13:07:33 Ann-Turi Skjevik - Updated media metadata for Karenia mikimotoi_4.jpg
  • 2012-10-05 13:06:23 Ann-Turi Skjevik - Added media: Karenia mikimotoi_4.jpg
  • 2012-09-05 16:12:06 Malin Mohlin - Updated media metadata for Karenia mikimotoi_3.jpg
  • 2012-09-05 16:11:27 Malin Mohlin - Added media: Karenia mikimotoi_3.jpg
  • 2012-02-02 12:10:53 Malin Mohlin - Updated media metadata for Karenia mikimotoi_2.jpg
  • 2012-02-02 12:09:58 Malin Mohlin - Updated media metadata for Karenia mikimotoi_2.jpg
  • 2012-02-02 12:09:37 Malin Mohlin - Added media: Karenia mikimotoi_2.jpg
  • 2011-10-07 14:23:26 Bengt Karlson - Updated media metadata for Karenia mikimotoi_1.jpg
  • 2011-10-07 14:23:04 Bengt Karlson - Added media: Karenia mikimotoi_1.jpg
  • 2011-10-03 21:12:17 Bengt Karlson - Updated media metadata for Karenia mikimotoi_1193668908.gif
  • 2011-09-14 14:27:38 Bengt Karlson - Deleted media: Karenia mikimotoi_1194301287.mov