Coscinodiscus granii   Gough,  1905 (Diatom)
Organism information awaits expert curation
Taxonomy
Kingdom:Chromista
Phylum:Ochrophyta
Class: Bacillariophyceae
Order:Coscinodiscales
Family:Coscinodiscaceae

Image copyrights: University of Caen Basse-Normandie, France

Valve (right) and girdle (left) views, specific girdle view

Description
Size: Diameter 40-200 μm.

Girdle view: Cells asymmetric, one side much higher than the other. Valvocopula wedge-shaped, widest opposite to the opening. Greatest convexity of the valve not in the center of the valve but nearest the widest part of the valvocopula. Chloroplasts discoid and smooth in outline.
Valve view: Central rosette of larger areolae. Radial areolation, incomplete striae, and decussating arcs in the central part of the valve. Cribra barely discernible with LM. One ring of marginal processes including two larger processes ca. 135˚ apart, readily seen with LM; the larger processes seen as deep indentations of the valve mantle. Hyaline lines from the marginal processes toward the valve center more or less distinct.


Synonym (s)

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Estuarine, Coastal

Biogeography


• Karnataka, Netravati Estuary INDIA (Record: 02/1993-05/1994)
• Kerala, Kochi Backwaters INDIA (Record: 1970-1972)
• Kerala, Azheekode INDIA
• Kerala, Balathuruthu INDIA
• Kerala, Mahe INDIA
• Tamil Nadu, Kaduviyar estuary INDIA (Record: 10/2005-09/2006)
• West Coast INDIA
• West Bengal, Hugli Matla Estuary INDIA
• Orissa, Rushikulya Estuary (Lat: 19.37) (Long: 85.05) INDIA (Record: 11/01/1989-12/01/1989)
• East Coast (Lat: 10) (Long: 79) INDIA (Record: 01/1999-08/2002)
• East Coast (Lat: 21) (Long: 94) INDIA (Record: 01/1999-08/2002)

Literature Source(s)
  • Gowda, G; Gupta, TRC; Rajesh, KM; Gowda, H; Lingadhal, C and Ramesh, AM (2001) Seasonal distribution of phytoplankton in Nethravathi estuary, Mangalore Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin 43(1&2) 31-40 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
  • Plankton*Net Data Provider at the Alfred Wegener Insitute for Polar and Marine Research Available at - http://dx.doi.org/10013/de.awi.planktonnet
  • Hasle, GR and Syvertsen, EE (1997) Marine diatoms Identifying marine phytoplankton Academic Press, San Diego, USA 5-385 Available at - NIO, Goa
  • Gopinathan, CP (1972) Seasonal abundance of phytoplankton in the Cochin backwaters Journal of the Marine Biological Association of India Marine Biological Association of India,Cochin 14(2) 568-577 Available at - http://eprints.cmfri.org.in/1566/
  • 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
  • Perumal, NV; Rajkumar, M; Perumal, P and Rajasekar, KT (2009) Seasonal variations of plankton diversity in the Kaduviyar estuary, Nagapattinam, southeast coast of India Journal of Environmental Biology Academy of Environmental Biology 30(6) 1035-1046 Available at - www.jeb.co.in/journal_issues/200911_nov09/paper_19.pdf
  • Subrahmanyan, R and Sarma, AHV (1960) Studies on the phytoplankton of the west coast of India Part III. Seasonal variation of the phytoplankters and environmental factors Indian Journal of Fisheries Indian Journal of fisheries for the Indian council of Agricultural research, Cochin, India 7 (2) 307-336 Available at - http://eprints.cmfri.org.in/1899/1/Article_04.pdf
  • Gopalakrishnan, V (1971) The biology of the Hooghly-Matlah estuarine system (West Bengal, India) with special reference to its fisheries Journal of marine biological association of india Marine biological association of india 13(2) 182-194 Available at - NIO, Goa
  • Shetty, HPC; Saha, SB and Ghosh, BB (1963) Observations on the distribution and fluctuations of plankton in the Hooghly-Matlah estuarine system, with notes on their relation to commercial fish landings Indian Journal of Fisheries Indian Council of Agricultural Research 8 (2) 326-363 Available at - NIO, Goa
  • Gouda, R and Panigrahy, RC (1989) Diurnal variation of phytoplankton in Rushikulya estuary, east coast of India Indian Journal of Marine Sciences Scientific Publishers 18(4) 246-250 Available at - NIO, Goa
  • Madhav, GV and Kondalarao, B (2004) Distribution of phytoplankton in the coastal waters of east coast of India Indian Journal of Marine Sciences CSIR, New Delhi 33(3) 262-268 Available at - http://nopr.niscair.res.in/bitstream/123456789/1678/1/IJMS%2033%283%29%20262-268.pdf

Page last updated on:2012-03-12

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