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DIVISION
Cyanobacteria
CLASS
Cyanophyceae
ORDER
Chroococcales
FAMILY
Gomphosphaeriaceae
GENUS
Woronichinia
SPECIES
Woronichinia naegeliana, (Unger) Elenkin, 1933
IMAGES
Synonyms
  • Gomphosphaeria naegeliana: Unger, Lemmermann (1907)
  • Coelosphaerium naegelianum: Unger (1854)
Morphological Characteristics

Colonies microscopic, spherical, ellipsoid, kidney-shaped or spherical-irregular (lobate), sometimes composed of subcolonies, with more or less densely and radially arranged cells in the peripheral monolayer, attached at the ends of gelatinous tubular stalks, which are of the same width as the cells; stalk system forms typical radial lamellation in the colonial center, diffluent in old colonies; mucilaginous envelope around the colony colourless or slightly yellowish, sometimes distinctly delimited, radially lamelate and extending beyond the cello layer; cells surrounded sometimes with individual, narrow gelatinous envelopes. Cells obovoid or ellipsoid, blue-green with numerous aerotopes.

Morphological Data
Distinctive morphometric characters
  • Cell Length: from 5 to 7 µm
  • Cell Width: from 2.5 to 3.5 µm
  • Diameter of colony: up to 180 µm
Distribution
Commonly planktonic in eutrophic lakes and ponds, sometimes forming water blooms; temperate zones.
 
Distribution:  as Coelosphaerium naegelianum Unger

Europe: Spain (Alvarez-Cobelas & Gallardo 1988), Sweden (Skuja 1948). North America: Arkansas (Smith 2010), Minnesota (Hill 1972). South-west Asia: Iran (Afsharzadeh et al. 2003). Asia: China (Hu & Wei 2006). Australia and New Zealand: New South Wales (Day et al. 1995), Victoria (Day et al. 1995).

as Gomphosphaeria naegeliana (Unger) Lemmermann

Europe: Romania (Caraus 2002).

as Woronichinia naegeliana (Unger) Elenkin

Europe: Baltic Sea (Hällfors 2004), Britain (Whitton et al. 2003), Czech Republic (Rajaniemi-Wacklin et al. 2006), Germany (Täuscher 2011, Täuscher 2014), Lithuania (Vitenaite 2001), Luxembourg (Willame et al 2006), Romania (Caraus 2012). North America: Arkansas (Smith 2010). South America: Brazil (Werner 2010). Asia: Korea (Park 2012). South-east Asia: Singapore (Pham et al. 2011).

 

Notes

Toxicity:

Possibly toxic.

Resistence Stages:

Possibly toxic.

References

Manual on Harmful Marine Microalgae. Oceanographic Methodology series, UNESCO Publishing, 2nd revised edition, Hallegraeff G.M., Anderson D.M., Cembella A.D., 2003,

Checklist of Baltic Sea Phytoplankton Species. Baltic Sea Environment Proceedings No. 95, Helsinki Commission Baltic Marine Environment Protection Commission, Hällfors G., 2004,

Süßwasserflora von Mitteleuropa / Freshwater Flora of Central Europe. 19/1. Cyanoprokaryota. 1. Teil/Part 1: Chroococcales., Spektrum Akademischer Verlag., Komarek J., Anagnostidis K., 2008, 548

Biovolumes and size-classes of phytoplankton in the Baltic Sea, HELCOM Balt.Sea Environ. Proc. No. 106, 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, 1-144

SHAPE
Shape Type
simple
Shape Unit
Colony
Cod:
2 - Prolate Spheroid
Surface Area
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