Vai al contenuto

Species details



Home » Species details

DIVISION
CLASS
ORDER
Oscillatoriales
FAMILY
Phormidiaceae
GENUS
SPECIES
Planktothrix , Anagnostidis, Komárek, 1988
IMAGES
Morphological Characteristics

The trichomes are solitary, rarely in small irregular and easy disintegrating fascicles (groups), more or less straight or slightly waved, isopolar, free living; usually growing without sheath. Trichomes with cylindrical cells, slightly constricted at the crosswalls, towards ends not attenuated, or attenuated, and in this case often calyptrate or capitate. Cells slightly shorter than wide to isodiametric, rarely slightly longer than wide, with aerotopes through the whole cell volume. 

 
 

 

Morphological Data
Distinctive morphometric characters
  • Cell Length: from 1.5 to 10 µm
  • Width of trichome: from 2 to 12 µm
  • Length of filaments: up to 4000 µm
Distribution
Freshwater, planktonic in lakes and ponds, mainly in mesotrophic to eutrophic; often forming water blooms. Two species have cosmopolitan distribution, other ones are geographically limited.
 
 
Notes

Harmful, can form blooms.

Toxicity:

Toxic.

Resistence Stages:

Toxic.

References

Taxonomic review of the cyanoprokaryotic genera Planktothrix and Planktothricoides, Czech Phycology, Olomouc, 4, Jirí Komárek, Jaroslava Komárková, 2004, 1-18

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. 19/2. Cyanoprokaryota. 2. Teil/Part 2: Oscillatoriales., Spektrum Akademischer Verlag., Komarek J., Anagnostidis K., 2005, 1-760

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
Filament of 100 µm
Cod:
3 - Cylinder
Surface Area
Calculate Formula
formula image
Volume
Calculate Formula
formula image
shape image