Microcystis aeruginosa   (Kutzing) Kutzing,  1846 (Cyanobacteria formerly Blue Green Algae)
Organism information awaits expert curation
Class: Cyanophyceae

Image copyrights: Plankton net

Plantmass free floating especially on the surface of an expanse of water. Colonies of various shapes, spherical or elongate with irregularly lobed margins, solid when young but soon becoming clathrate or saccate until the whole becomes a coarsely latticed sack or clumsy net of irregularly lobes forms. Sheath hyaline, diffluent, and widely variable sometimes reaching a thickness of 130 μm or more according to the age of the plant and quality of water. Cells spherical, 3-4 μm in diameter. Cell contents granular, blue-green, granules exhibiting "Brownian" movement under high power of the microscope, pseudovacuoles present.

Synonym (s)
Micraloa aeruginosa Kutzing, 1833
(Homotypic synonym)
Diplocystis aeruginosa (Kutzing) Trevisan, 1848
(Homotypic synonym)
Clathrocystis aeruginosa (Kutzing) Henfrey, 1856
(Homotypic synonym)
Polycystis aeruginosa (Kutzing) Kutzing, 1846
Microcystis aeruginosa f. flos-aquae (Wittrock) Elenkin, 1938

Common Name (s)
Economic Importance and Threats
Importance:  Dangers
(Forms blooms. Produce toxins (microcystins) that have been reported to result in health problems to animals that drink the water, and minor skin irritation and gastrointestinal discomfort in humans that come in contact with toxic blooms.)

Habitat:  Estuarine, Coastal


• Kerala, Paravur-Kappil Backwater INDIA (Record: 02/2001-01/2002)
• Kerala, Balathuruthu INDIA
• Andhra Pradesh, Vishakhapatnam Harbour INDIA (Record: 1984-1986)

Literature Source(s)
  • Santhosh, S; Sobha, V; Girijakumari, S and Thara, JC (2007) Phytoplankton abundance of Paravur-Kappil backwaters of Kerala Seaweed Research and Utilisation Seaweed Research and Utilisation Association, Tamil Nadu, India 29(1 & 2) 155-163 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • (2006) Algaebase Available at - http://www.algaebase.org/
  • Plankton*Net Data Provider at the Alfred Wegener Insitute for Polar and Marine Research Available at - http://dx.doi.org/10013/de.awi.planktonnet
  • Harmful algal blooms in Maryland Available at - http://www.dnr.state.md.us/bay/hab/microcystis2.html
  • Biswas, K (1948) Common fresh & brackish water algal flora of India & Burma Records of the Botanical Survey of India Periodical Expert Book Agency, Delhi, India 15(1) 125 pp Available at - NIO, Goa
  • Sanilkumar, M G; Dr.Joseph, K J; Dr. Saramma, A V (2009) Planktonic Microalgae Microalgae in the Southwest Coast of India 34-114 Available at - http://dyuthi.cusat.ac.in/xmlui/purl/1922
  • Subrahmanyam, MNV and Bhavanarayana, PV (1989) Distribution and abundance of phytoplankton in Visakhapatnam harbour Indian Journal of Marine Sciences Scientific Publishers 18(4) 251-258 Available at - NIO, Goa

Page last updated on:2011-06-30

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