Heterocapsa triquetra (Ehrenberg) Stein, 1883

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Heterocapsa triquetra

epifluorescence microscopy (WU) - blue excitation light obtained with a combination of BP330-385 excitation filter, DM400 dichroic mirror and BA420 barrier filter; this combination with Calco Fluor White M2R fluorescent brighter elicited a blue fluorescence of cellulose theca

Photographer/artist Janina Kownacka

Additional image information

Title
Heterocapsa triquetra
Photographer/artist
Janina Kownacka
Copyright holder
Janina Kownacka
Institute
National Marine Fisheries Research Institute
Contributing organisation
HELCOM-PEG
Contributor
Janina Kownacka
Caption
epifluorescence microscopy (WU) - blue excitation light obtained with a combination of BP330-385 excitation filter, DM400 dichroic mirror and BA420 barrier filter; this combination with Calco Fluor White M2R fluorescent brighter elicited a blue fluorescence of cellulose theca
Sampling date
August 2008
Geographic area
Baltic Sea - The Gulf of Gdansk
License
Creative Commons Attribution-NoDerivs 3.0 Unported
Technique
Fluorescence microscopy
Preservation
No preservation
Stain
Calcofluor-Fluorescent brightener
Image galleries
HELCOM-PEG

Description

IDs in other systems
Tropic type
A
Morphology
A large pyrenoid and 2''''-plate often with a characteristic protrusion
Other remarks

Distribution: Worldwide
Life form
Solitary
Size
length c. 30 µm, width c. 20 µm
Culture collections
SCCAP
The Scandinavian Culture Collection of Algae and Protozoa at the University of Copenhagen
More info at http://www.sccap.dk.
Strains: K-0447, K-1131, K-1124, K-1125, K-0482, K-1127, K-1134, K-1129
Literature
Hansen, G. & Larsen, J. 1992. Dinoflagellater i danske farvande. In: Thomsen, H. A. (ed.) Plankton i de indre danske farvande. Havforskning fra Miljøstyrelsen, Copenhagen, p. 45-155.
Morrill, L. C. & Loeblich III, A. R. 1981. A survey for body scales in the dinoflagellates and a revision of Cachonina and Heterocapsa (Pyrrophyta). J. Plank. Res. 3: 53-65:
Pennick, N. C. & Clarke, K. J. 1977. ”˜The occurrence of scales in the peridinian dinoflagellate Heterocapsa triquetra (Ehrenb.) Stein’. Br. Phycol. J., 12: 63-66.
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.

Biovolumes

Species Heterocapsa triquetra
Author (Ehrenberg) Stein 1883
Division DINOPHYTA (PYRROPHYTA)
Class Dinophyceae
Order PERIDINIALES
Trophy MX
Geometric shape 2 cones
Formula p/12*d^2*h
Size class 1 2 3 4 5 6
Unit cell cell cell cell cell cell
Size range 15-17x8 17-19x11 19-21x14-15 22-24x15 25-28x17-21 32-34x21-23
Height(h), µm 16.0 18.0 20.0 23.0 27.0 33.0
Diameter(d1), µm 8.0 11.0 14.5 15.0 19.0 22.0
No. of cells/counting unit 1 1 1 1 1 1
Calculated volume, µm3 268 570 1 100 1 354 2 550 4 179
Calculated Carbon pg/counting unit 41 84 155 188 341 543

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

  • 2015-04-08 12:12:29 Susanne Busch - Updated media metadata for Heterocapsa triquetra_8.jpg
  • 2015-04-08 12:11:48 Susanne Busch - Added media: Heterocapsa triquetra_8.jpg
  • 2014-09-26 14:57:50 Janina Kownacka - Updated media metadata for Heterocapsa triquetra_7.jpg
  • 2014-09-26 14:55:13 Janina Kownacka - Added media: Heterocapsa triquetra_7.jpg
  • 2014-07-14 09:09:25 Regina Hansen - Updated media metadata for Heterocapsa triquetra_6.png
  • 2014-07-14 09:07:12 Regina Hansen - Added media: Heterocapsa triquetra_6.png
  • 2012-09-14 11:40:09 Ann-Turi Skjevik - Updated media metadata for Heterocapsa triquetra_5.jpg
  • 2012-09-14 11:40:02 Ann-Turi Skjevik - Added media: Heterocapsa triquetra_5.jpg
  • 2012-09-14 11:39:50 Ann-Turi Skjevik - Updated media metadata for Heterocapsa triquetra_4.jpg
  • 2012-09-14 11:39:46 Ann-Turi Skjevik - Added media: Heterocapsa triquetra_4.jpg
  • 2012-09-14 11:39:32 Ann-Turi Skjevik - Updated media metadata for Heterocapsa triquetra_3.jpg
  • 2012-09-14 11:39:21 Ann-Turi Skjevik - Added media: Heterocapsa triquetra_3.jpg
  • 2011-10-07 14:20:15 Bengt Karlson - Updated media metadata for Heterocapsa triquetra_2.jpg
  • 2011-10-07 14:19:51 Bengt Karlson - Added media: Heterocapsa triquetra_2.jpg
  • 2011-10-07 14:19:20 Bengt Karlson - Deleted media: Heterocapsa triquetra_2.jpg
  • 2011-10-07 14:19:07 Bengt Karlson - Updated media metadata for Heterocapsa triquetra_2.jpg
  • 2011-10-07 14:18:40 Bengt Karlson - Added media: Heterocapsa triquetra_2.jpg