Donax cuneatus   Linnaeus,  1758 (Clam)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Mollusca
Class: Bivalvia
Order:Veneroida
Family:Donacidae

Description
Size: Maximum shell length 4 cm, commonly to 2.5 cm.

Color: Outside of shell variable, white, cream, brown, grey, or purple, often with darker radiating bands. Interior whitish, with variable orange or purple bands or blotches, sometimes dark purple overall.

Shell is thick, laterally compressed and variable in shape, wedge-shaped to trigonal-ovate in outline, very inequilateral. It has a curved keel extending from the umbo to the postero-ventral corner; there are sharp concentric and finer radiating ones which are conspicuous in the anterior and posterior regions only. Umbones are small, situated well behind the midline. The anterior end of the shell is broad and rounded while the posterior end is narrow and rounded; the pallial sinus is deep. The shell is white suffused with pale violet especially towards umbo and the posterior region where the colour is darker. The inner surface of the valves is of deep violet colour. Posterodorsal margin is markedly shorter and more slanting than anterodorsal margin, meeting the somewhat truncate posterior margin at an obtuse angle. Posterior slope set off from lateral face of valve by a blunt umbono-ventral angle. Outer surface of lateral face rather smooth in appearance, with only fine concentric grooves and very closely-spaced, tenuous radial lines. Sculpture of posterior slope with quite strong, rugose concentric grooves crossed by finer radiating threads and often, at the anterior limit with lateral face, 1 or more radiating threads that are not affected by the sinuous concentric sculpturing. Periostracum is thin, and glossy. Hinge with 1 anterior and 2 posterior lateral teeth in right valve, against 1 anterior and 1 posterior laterals in left valve. Pallial sinus is deep and broad, extending nearly half way into the shell. Internal margins smooth.


Synonym (s)
Donax bicolor Lamarck, 1818
(Junior synonym)
Donax granosus Lamarck, 1818
(Junior synonym)
Donax obscurus Deshayes, 1831
(Junior synonym)
Donax radiatus Humphrey, 1797
(Junior synonym)
Latona cuneata (Linnaeus, 1758)
(Senior synonym)
Latona variabilis (Schumacher, 1817)
(Junior synonym)

Common Name (s)
• Cuneate Donax
• Vazhi Matti (Tamil)
• Mural (Tamil)
Economic Importance and Threats
Importance:  Commercial
(Local artisanal exploitation)

Ecology
Habitat:  Demersal, Sandy, Coastal

Biogeography


• Gujarat, Gulf of Kachchh (Lat: 22.6) (Long: 69.5) INDIA
• Tamil Nadu, Parangipettai Coast (Lat: 11.48) (Long: 79.77) INDIA
• East Coast INDIA
• Tamil Nadu, Thondi INDIA (Record: 06/2005-05/2006)
• Tamil Nadu, Chennai Coast INDIA
• Palk Bay INDIA
• Maharashtra, Mirya Bay INDIA
• Maharashtra INDIA
• West Coast INDIA
• Tamil Nadu, Dhanushkodi INDIA
• Tamil Nadu, Arukkattuthurai (Lat: 10.39) (Long: 79.86) INDIA (Record: 09/2007-08/2008)
• Tamil Nadu, Kodikkarai (Lat: 10.3) (Long: 79.85) INDIA (Record: 09/2007-08/2008)
• Tamil Nadu, Mallipattinam (Lat: 10.27) (Long: 79.32) INDIA (Record: 09/2007-08/2008)
• Tamil Nadu, Manalmelkudi (Lat: 10.42) (Long: 79.31) INDIA (Record: 09/2007-08/2008)
• Tamil Nadu, Adirampattinam (Lat: 9.95) (Long: 79.18) INDIA (Record: 09/2007-08/2008)
• Tamil Nadu, Thondi INDIA (Record: 07/2005-06/2006)
• Palk bay INDIA
• Kerala, Kochi INDIA
• Tamil Nadu, Vedalai INDIA
• Andaman and Nicobar Islands INDIA
• Gujarat, Saurashtra INDIA
• Tamil Nadu, Gulf of Mannar (Lat: 78.13) (Long: 8.58) INDIA (Record: 01/1994-12/1995)
• Tamil Nadu, Gulf of Mannar (Lat: 79.5) (Long: 9.33) INDIA (Record: 01/1994-12/1995)

Literature Source(s)
  • Tikadar, BK; Daniel, A and Subbarao, NV (1986) Sea shore animals of Andaman and Nicobar Islands The Director, ZSI, Kolkatta 188 Available at - ZSI, Pune
  • Apte,D (1998) The book of Indian shells Oxford University Press 115
  • Venkatraman, K; Srinivasan, M; Satyanarayana, CH and Prabhakar D (2002) Faunal diversity of Gulf of Mannar biosphere reserve Conservation area series 15 ZSI 77 pp; VIII pla Available at - NCL, Pune
  • Zoological Survey of India (Eds) (1991) Animal resources of India (Protozoa to Mammalia) ZSI 1-694 Available at - NCL, Pune
  • Shanmugam, A; Rajagopal, S and Nazeer, RA Common bivalves of Parangipettai coast Available at - NIO, Goa
  • Nagabhushanam, AK and Krishnan, S (1993) Observations on the distribution of some of the marine organism inhabiting the inter-tidal zone along the western continental shelf of the Bay of Bengal, with particular reference to the Tamil Nadu coastal strip Records of the Zoological Survey of India 93(3-4) 449-490 Available at - ZSI, Pune
  • Subba Rao, NV and Sastry, DRK (2005) Fauna of Marine National Park, Gulf of Kuchchh (Gujarat) ZSI 79 pp Available at - NCL, Pune
  • Tan, KS and Kastoro, WW (2004) A small collection of gastropods and bivalves from the Anambas and Natuna Islands, south China Sea The Raffles Bulletin of Zoology 11 47-54
  • Fernando, AS and Fernando, OJ (2002) A field guide to the common invertebrates of the east coast of India Centre of Advanced Study in Marine Biology 1-258 Available at - NIO, RC Kochi
  • Sealifebase Available at - http://www.sealifebase.org/
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Poutiers, JM (1998) Bivalves FAO species identification guide for fishery purposes. The living marine resources of the western central Pacific. Volume 1: Seaweeds, corals, bivalves and gastropods FAO, Rome 1 686 pp Available at - http://www.fao.org/docrep/009/w7191e/w7191e00.htm
  • Serebiah, JS; Stella, C and Kadhar, AA (2008) Assessment of benthos in the subtidal area of Thondi (Palk Bay), southeast Tamilnadu- GIS based explication Proceedings of the national symposium on marine and coastal ecosystems 27-29, August 2007 Seaweed Research and Utilisation Seaweed Research and Utilisation Association, Marine Fisheries- 623 520, Tamilnadu, India 30 279-296 Available at - NIO, Goa
  • dkimages.com Available at - www.dkimages.com
  • Mane, UH and Nagabhushanam, R (1987) Reproduction in edible bivalve shellfishes of Ratnagiri coast National seminar on shellfish resources and farming CMFRI 167-176 Available at - eprints.cmfri.org.in/2566/1/Article_41.pdf
  • Mane, UH and Nagabhushanam, R (1987) Reproduction in edible bivalve shellfishes of Ratnagiri coast National seminar on shellfish resources and farming CMFRI 167-176 Available at - eprints.cmfri.org.in/2566/1/Article_41.pdf
  • Alagarswami, K and Narasimham, KA (1973) Clam, cockle and oyster resources of the indian coasts Living resources of the seas around India CMFRI, Cochin 648-658 Available at - http://eprints.cmfri.org.in/2760/1/Article_49.pdf
  • Samuel, VD; Chacko, D and Edward, JKP (2005) Preliminary study on the molluscan diversity of “the lost world’’– Dhanushkodi, east coast of India Proceedings of the National Seminar on Reef Ecosystem Remediation SDMRI Special Research Publication No.9 54-58 Available at - http://www.sdmri.org/reports/proceedings%202005%20-%20sdmri.pdf
  • Varadharajan, D; Soundarapandian, P; Gunalan, B and Babu, R (2010) Seasonal abundance of macro benthic composition and diversity along the south east coast of India European Journal of Applied Sciences IDOSI Publications 2 (1) 1-5 Available at - www.idosi.org/ejas/2(1)10/1.pdf
  • Anbuchezhian, R; Ravichandran, S; Serebiah, JS and Nobi, EP (2010) Geographic information system based assessment of benthic macrofauna in Thondi coastal area, south east coast of India World Journal of Zoology International Digital Organization for Scientific Information 5 (3) 172-182 Available at - www.idosi.org/wjz/wjz5(3)10/6.pdf
  • Nayar, KN and Mahadevan, S (1974) Edible Bivalves; Clams and others The commercial molluscs of India Bulletin Of Central Marine Fisheries Research Institute CMFRI, Cochin 25 40-53 Available at - http://eprints.cmfri.org.in/643/1/Nagappan_and_Mahadeven1.pdf
  • Sundaram, KS; Sarvesan, R; Mohamed, KH and Shanbhogue, SL (1969) Catalogue of molluscs, prawns, stomatopods and marine algae in the reference collections of the central marine fisheries research institute Bulletin Of Central Marine Fisheries Research Institute CMFRI, Cochin 9 1-52 Available at - http://eprints.cmfri.org.in/570/1/Bulletin_9.pdf
  • Jones, S (1969) The molluscan fishery resources of India Proceedings of the Symposium on Mollusca CMFRI 906-918 Available at - http://eprints.cmfri.org.in/2371/1/Article_26.pdf
  • Das, AK and Roy, MKD (1989) A general account of the mangrove fauna of Andaman and Nicobar islands Fauna of conservation areas Zoological survey of India 1-152 Available at - NIO, Goa
  • Dholakia, AD (2004) Marine resources Fisheries and aquatic resources of India Daya publishing house 271-303 Available at - NIO, Goa
  • Jayabal, R and Kalyani, M (1989) Check list of estuarine and marine bivalves of Porto Novo waters Mahasagar NIO, Goa 22(3) 147-150 Available at - NIO,Goa
  • Hameed, PS and Somasundaram, SSN (1998) A survey of bivalve molluscs in Gulf of Mannar, India Indian Journal of Fisheries Indian journal of Fisheries for the Indian Council of Agricultural Research, Kochi, India 45(2) 177-181 Available at - http://epubs.icar.org.in/ejournal/index.php/IJF/article/download/8741/3650
  • www.idscaro.net Available at - http://www.idscaro.net/sci/index.htm

Page last updated on:2013-01-17

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