Coscinodiscus concinnus   W. Smith,  1856 (Diatom)
Organism information awaits expert curation
Taxonomy
Kingdom:Chromista
Phylum:Ochrophyta
Class: Bacillariophyceae
Order:Coscinodiscales
Family:Coscinodiscaceae

Image copyrights: Mats Kuylenstierna & Bengt Karlson

Description
Size: Diameter 110-500 µm.

Color: Yellow brown.

Girdle view: Cells thin-walled; valves convex. Numerous small chloroplasts, fimbriate in outline, markedly H-shaped when dividing. Marginal processes discernible in water mounts.
Valve view: Central rosette large with a star-shaped hyaline area in the middle. The size of the hyaline area and the development of areola walls variable. Areola rows in bundles bordered by distinct hyaline lines running from marginal labiate processes toward valve center. Interstitial meshes, sometimes visible, probably identical with the pentagonal areola at the point of origin of each incomplete stria. The cribra barely seen with light microscopy. Two larger marginal processes, ca. 135 ˚apart, with raised parts as well as the smaller marginal processes, readily seen with light microscopy.

Reproduction is general for group: both sexual and asexual.


Synonym (s)

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Pelagic
Trophic Level:  Producer
Predator:  Marine microorganisms and animal larvae

Biogeography


• West Bengal, Chandanpiri INDIA
• Tamil Nadu, Pichavaram Mangrove INDIA (Record: 04/1980-03/1982)
• 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)
• Karnataka, Old Port of Mangalore (Lat: 12.86) (Long: 74.88) INDIA (Record: 28/12/2005 - 13/01/2006)
• Westcoast INDIA

Literature Source(s)
  • Desikachary, TV First list of diatoms of the Indian Ocean region University Botany Laboratory, Madras 600 005 1-139 Available at - NCL, Pune
  • 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
  • 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
  • Chandrasekaran, VS (2000) Relationship between plankton and finfish and shellfish juveniles in Pichavaram mangrove waterways, south east coast of India Seaweed Research and Utilisation Seaweed Research and Utilisation Association, Tamil Nadu 22 (1 & 2) 199-207 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
  • 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/
  • Harnstrom, k; Karunasagar, I and Godhe, A (2009) Phytoplankton species assemblages and their relationship to hydrographic factors-a study at the old port in Mangalore, coastal Arabian sea Indian journal of marine sciences NISCAIR 38(2) 224-234 Available at - http://nopr.niscair.res.in/handle/123456789/4673
  • 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

Page last updated on:2011-02-09

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