Coscinodiscus asteromphalus   Ehrenberg,  1844 (Diatom)
Organism information awaits expert curation
Taxonomy
Kingdom:Chromista
Phylum:Ochrophyta
Class: Bacillariophyceae
Order:Coscinodiscales
Family:Coscinodiscaceae

Image copyrights: Plankton net

Girdle view

Description
Size: Frustule 180-300 µm in diameter.

Color: Yellow brown.

Frustule disc-shaped and subconcave in the center. Cells are discoid in girdle view with slightly convex valves and a relatively long pervalvar axis. The central area of the valves is somewhat depressed. The coarse structure of polygonal areolae shows a primary radial and a secondary spiral pattern with a large rosette in the centre. Surface membrane with a circle of fine puncta. Areolae are nearly of the same size (3-5 in 10 µm), only those closest to the valve margin are smaller. The ring of labiate processes is visible in light microscope and is situated close to the margin; the two larger labiate processes can be found at an angle of about 120-135° apart. The cells contain numerous plate-like chloroplasts.

Reproduction is general for group: both sexual and asexual.


Synonym (s)
Coscinodiscus radiatus var. asteromphalus (Ehrenberg) Ehrenberg, 1854
Coscinodiscus asteromphalus var. conspicua Grunow, 1883
Coscinodiscus asteromphalus var. genuina Grunow, 1884

Common Name (s)
Economic Importance and Threats
Importance:  Dangers
(Causes algal blooms)

Ecology
Habitat:  Pelagic, Open Sea, Coastal
Predator:  Acetes (shrimp)

Biogeography


• West Bengal, Chandanpiri INDIA
• Pondicherry, Karaikal, Arasalar Estuary (Lat: 10.91) (Long: 79.86) INDIA
• Tamil Nadu, Off Tuticorin (Lat: 8.71) (Long: 78.2) INDIA (Record: 1987-1989)
• Bay of Bengal INDIA (Record: 06/07/2001-02/08/2001)
• Kerala, Kochi Backwaters INDIA (Record: 1970-1972)
• Kerala, Off Kochi (Lat: 10) (Long: 75.53) INDIA (Record: 19/08/2008)
• Kerala, Punnapra INDIA
• Kerala, Azheekode INDIA
• Kerala, Balathuruthu INDIA
• Kerala, Mahe INDIA
• West Coast INDIA
• Tamil Nadu, Mandapam INDIA (Record: 07/2008-12/2008)
• Tamil Nadu, Keelakarai INDIA (Record: 07/2008-12/2008)
• Kerala, Chombala (Lat: 11.71) (Long: 75.55) INDIA (Record: 10/2001-09/2003) (Depth: 8 mts)
• 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)
  • Sournia, A (1971) Diatomees planctoniques du canal de Mozambique et de Lile Maurice International Indian Ocean Expedition collected reprints-7 UNESCO 7 521-657 Available at - NIO RC, Kochi
  • Hussain, SM Brief report on biodiversity in the coastal areas of Pakistan p 113
  • Santra, SC; Pal, UC and Choudhury, A (1991) Marine phytoplankton of the mangrove delta region of West Bengal, India Journal of the Marine Biological Association of India Marine Biological Association of India 33(1-2) 292-307 Available at - NIO, RC, Kochi
  • 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
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Natanamurugaraj, G; Ramalingam, R; Senthilkumar, T; Muruganandam, A; Muthukumar, S and Jeyachandran, S (2008) Studies on the ecology and biodiversity of planktonic diatoms in Araslar estuary (Karaikal), southeast Tamilnadu Proceedings of the national symposium on marine and coastal ecosystems Seaweed Research and Utilisation Seaweed Research and Utilisation Association, Marine Fisheries- 623 520, Tamil Nadu, India 30 Available at - NIO, Goa
  • Zhong, Z (1989) Marine planktology Springer-Verlag Berlin Heidelberg New York Tokyo 454 pp Available at - NIO, Goa
  • Subramanian, SK and Krishnamurthi, MS (1997) Studies on the species composition of neritic diatoms in the aquatic realm off Tuticorin Coast in the Gulf of Mannar-Bay of Bengal Seaweed Research and Utilisation Seaweed Research and Utilisation Association 19(1-2) 1-11 Available at - NIO, Goa
  • (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
  • Paul, JT; Ramaiah, N; Gauns, M and Fernandes, V (2007) Preponderance of a few diatom species among the highly diverse microphytoplankton assemblages in the Bay of Bengal. Marine Biology springerlink 152(1) 63-75 Available at - http://drs.nio.org/drs/bitstream/2264/637/4/Mar_Biol_152_63.pdf
  • 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/
  • Padmakumar, KB; SreeRenjima, G; Fanimol, CL; Menon, RN and Sanjeevan, VN (2010) Preponderance of heterotrophic Noctiluca scintillans during a multi-species diatom bloom along the southwest coast of India International Journal of Oceans and Oceanography Research India Publications 4(1) 55-63 Available at - http://moeseprints.incois.gov.in/197/1/Preponderance_of_heterotrophic_Noctiluca_scintillans_during_a_multi_species_diatom_bloom_along_the_southwest_coast_of_India.pdf
  • 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
  • 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
  • Anantharaman, P; Thirumaran, G; Arumugam, R; Kannan, RR; Hemalatha, A; Kannathasan, A; Sampathkumar, P and Balasubramanian, T (2010) Monitoring of Noctiluca bloom in Mandapam and Keelakarai coastal waters, southeast coast of India Recent Research in Science and Technology 2(10) 51-58 Available at - http://recent-science.com/article/viewFile/4386/2174
  • Jugnu, R and Kripa, V (2008) Prevalence of non toxic and harmful algal blooms along Kerala coast Marine Fisheries Information Service Technical and Extension Series CMFRI 195 3-5 Available at - http://210.212.232.212/cdhome/Marine_Fisheries_Information_Service/Number_195_2008/MFIS-195-Jan-Mar-2008-Eng.pdf

Page last updated on:2012-03-12

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