Chaetoceros wighamii Brightwell, 1856

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Chaetoceros whighamii

Photographer/artist Regina Hansen

Additional image information

Title
Chaetoceros whighamii
Photographer/artist
Regina Hansen
Contributing organisation
HELCOM-PEG
Contributor
Regina Hansen
License
Creative Commons Attribution-NoDerivs 3.0 Unported
Image galleries
HELCOM-PEG

Description

IDs in other systems
Tropic type
A
Morphology
Cells rectangular with drawn up poles and sometimes with a characteristic process in the middle of the valve (Jensen & Moestrup 1998)
Other remarks
Strong morphological variability. Solitary forms could be confused with C. ceratosporus Ostenfeld. Jensen & Moestrup (1998) put Chaetoceros fallax as synonymous of C. wighamii. Compare Rines & Hargraves (1988) and Castillo et al. (1992), which had a different definition of this species. Probably restricted to brackish water (Hasle & Syvertsen 1996)
Life form
Solitary cells or united in chains
Size
Diameter = 4-25 µm
Resting spore
+
Literature
Castillo, P. M. S., León, M. A. U. & Round, F. E. 1992. Estudio de Chaetoceros wighamii Brightwell: Un taxon mal interpretado. Diatom Research. 7: 127-136.
Jensen, K. G. & Moestrup, Ø. 1998. The genus Chaetoceros (Bacillariophyceae) in inner Danish coastal waters. Opera Botanica. 133: 1-68.
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.
Tangen, K. 1974. Fytoplankton og planktoniske ciliater i en forurenset terskelfjord, Nordåsvatnet i Hordaland (inkludert observasjoner av noen abiotiske faktorer). Institutt for marinbiologi og limnologi, Avd. marin botanikk. In Norwegian. 449 pp.

Biovolumes

Species Chaetoceros wighamii
Author Brightwell 1856
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 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Unit cell cell cell cell cell cell cell cell cell cell cell cell cell cell cell cell cell cell cell cell cell
Size range 5x5 6x6 7x7 8x8 9x9 10x10 11-12x11-12 13-14x13-14 15-16x15-16 17-18x17-18 19-20x19-20 10-11x6-8 12x5 13x6-8 13x8-10 15-17x8-10 15-17x11-13 18-20x11-13 21-22x14-16 21-22x6-10 16-20x3-5
Height(h), µm 5.0 6.0 7.0 8.0 9.0 10.0 11.5 13.5 15.5 17.5 19.5 7.0 5.0 7.0 9.0 8.0 12.0 12.0 15.0 8.0 4.0
Diameter(d1), µm 5.0 6.0 7.0 8.0 9.0 10.0 11.5 13.5 15.5 17.5 19.5 10.5 12.0 13.0 13.0 16.0 16.0 19.0 21.5 21.5 18.0
Diameter(d2), µm 4.3 5.1 6.0 6.8 7.7 8.5 9.2 10.8 12.4 14.0 15.6 7.4 8.4 9.1 9.1 9.6 9.6 11.4 12.9 12.9 10.8
No. of cells/counting unit 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Calculated volume, µm3 83 144 229 342 486 667 955 1 545 2 339 3 366 4 657 424 396 650 836 965 1 447 2 040 3 266 1 742 610
Comment HD fac.=0.85 HD fac.=0.85 HD fac.=0.85 HD fac.=0.85 HD fac.=0.85 HD fac.=0.85 HD fac.=0.8 HD fac.=0.8 HD fac.=0.8 HD fac.=0.8 HD fac.=0.8 HD fac.=0.7 HD fac.=0.7 HD fac.=0.7 HD fac.=0.7 HD fac.=0.6 HD fac.=0.6 HD fac.=0.6 HD fac.=0.6 HD fac.=0.6 HD fac.=0.6
Calculated Carbon pg/counting unit 10 16 24 33 44 56 75 111 155 209 272 39 37 55 67 76 105 139 204 122 52

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

  • 2014-03-26 09:29:32 Susanne Busch - Updated media metadata for Chaetoceros wighamii_5.jpg
  • 2014-03-26 09:28:50 Susanne Busch - Added media: Chaetoceros wighamii_5.jpg
  • 2014-03-26 09:26:59 Susanne Busch - Updated media metadata for Chaetoceros wighamii_4.jpg
  • 2014-03-26 09:26:08 Susanne Busch - Added media: Chaetoceros wighamii_4.jpg
  • 2013-05-14 07:18:06 Regina Hansen - Updated media metadata for Chaetoceros wighamii_3.jpg
  • 2013-05-14 07:17:33 Regina Hansen - Added media: Chaetoceros wighamii_3.jpg
  • 2012-10-03 07:56:37 Ann-Turi Skjevik - Updated media metadata for Chaetoceros wighamii_2.jpg
  • 2012-10-03 07:55:45 Ann-Turi Skjevik - Added media: Chaetoceros wighamii_2.jpg
  • 2012-09-17 08:06:55 Ann-Turi Skjevik - Deleted media: Chaetoceros wighamii_2.JPG
  • 2012-02-21 15:10:30 Ann-Turi Skjevik - Updated media metadata for Chaetoceros wighamii_2.JPG
  • 2012-02-21 15:09:40 Ann-Turi Skjevik - Added media: Chaetoceros wighamii_2.JPG