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DIVISION
Chlorophyta
CLASS
Chlorophyceae
ORDER
Sphacelariales
FAMILY
Hydrodictyaceae
GENUS
Monactinus
SPECIES
Monactinus simplex, (Meyen) Corda , 1839
IMAGES
Synonyms
  • Pediastrum sturmii: Reinsch
  • Pediastrum simplex var. sturmii: Reinsch, Wolle
  • Pediastrum simplex var. radians: Lemmermann
  • Pediastrum simplex var. granulatum: Lemmermann (1897)
  • Pediastrum simplex var. duodenarium: Bailey, Rabenhorst (1862)
  • Pediastrum simplex: Meyen
  • Pediastrum enoplon: G.S West, West
Morphological Characteristics

Colony is flat, circular, not perforated, consisting of a single platelike layer of 8-32 cells. The outer cells have a triangular shape, while the inner ones are more or less spherical. Cell wall densely granulated.
 
 
 

 

Morphological Data
Distinctive morphometric characters
  • Diameter of coenobium: up to 246 µm
  • Length of marginal cells: from 16 to 57 µm
  • Length of inner cells: from 6 to 40 µm
  • Width of marginal cells: from 6 to 38 µm
  • Width of inner cells: from 6 to 36 µm
Distribution
Possibly cosmopolitan, planktonic in different eutrophic fresh and brackish waters.

Distribution: as Pediastrum simplex Meyen

Europe: Baltic Sea (Hällfors 2004), Black Sea (BSPC Editorial Board 2014), Britain (John & Tsarenko 2002, Whitton et al. 2003), Portugal (Cambra Sánchez, Álvarez Cobelas & Aboal Sanjurjo 1998), Romania (Caraus 2002, Caraus 2012), Spain (Alvárez Cobelas & Gallardo 1986, Aboal, Prefasi & Asencio 1996, Aboal 1996, Cambra Sánchez, Álvarez Cobelas & Aboal Sanjurjo 1998, Fanés Treviño, Comas González & Sánchez Castillo 2009). Atlantic Islands: Canary Islands (Cambra Sánchez, Álvarez Cobelas & Aboal Sanjurjo 1998). North America: Arkansas (Smith 2010). South-west Asia: Pakistan (Mehwish & Aliya 2005). Asia: China (Cao et al 2005, Hu & Wei 2006), Korea (Kim & Kim 2012), Taiwan (Anon. 2012). South-east Asia: Singapore (Pham et al. 2011). Australia and New Zealand: New South Wales (Day et al. 1995), New Zealand (Broady et al. 2012), Queensland (Day et al. 1995), Tasmania (Day et al. 1995).

as Monactinus simplex (Meyen) Corda

Europe: Germany (Täuscher 2014), Spain (Pérez, Maidana & Comas 2009, Pérez, Comas & Maidana 2010). South America: Brazil (Menezes 2010).

 

Notes

Toxicity:

Not reported.

Resistence Stages:

Not reported.

References

Växtplanktonflora, Naturvårdsverket, Solna, Sweden, Tikkanen T., Willen T., 1992,

Das Phytoplankton des Susswassers: Systematik und Biologie 7.T., Halfte. Chlorophyceae (Grunalgen), Ordnung: Chlorococcales / von J. Komarek, B. Fott., Stuttgart : E. Schweizerbart'sche Verlagsbuchhandlung, Huber-Pestalozzi G., 1983, 1044

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

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
Coenobium
Cod:
2 - Prolate Spheroid
Surface Area
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Volume
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