Mactra violacea   Gmelin,  1791 (Clam)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Mollusca
Class: Bivalvia
Order:Veneroida
Family:Mactridae

Description
Size: 9.5 cm SHL

Color: Violet

The shell is fairly large. The umbo is fairly prominent, well elevated, and slightly inclined forwards. The shell is slightly inequilateral, the part anterior to the umbo being a little longer than that behind it. Both, the anterior and the posterior margins, are about equally broad and rounded. The surface is finely concentrically striated and growth lines are conspicuous, particularly towards the ventral margin. The umbonal area is almost perfectly smooth and glossy. The hinge teeth bear one cardinal and two thin transversely elongated lateral teeth in left valve. The pit for the ligamentary nodule is triangular. The pallial sinus is broad and moderately deep. The outer surface is violet throughout, the color deepening towards the umbo. The inner surface is also violet, but the color is much deeper within the area bounded by the pallial line.

Synonym (s)
Coelomactra violacea (Gmelin, 1791)
(Senior synonym)
Mactra subrostrata Reeve, 1854

Common Name (s)
• Violet Mactra
Economic Importance and Threats
Importance:  Commercial
(Fisheries)

Ecology
Habitat:  Reef Associated, Demersal, Coastal

Biogeography


• West Bengal, Digha Coast (Lat: 21.61) (Long: 87.53) INDIA
• Tamil Nadu, Parangipettai Coast (Lat: 11.48) (Long: 79.77) INDIA
• Karnataka, Netrani Island (Lat: 14.01) (Long: 74.33) INDIA (Record: 08/05/2006) (Depth: -12 mts)
• Tamil Nadu, Dhanushkodi INDIA
• Tamil Nadu, Tuticorin Fishing Harbour INDIA

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
  • Subba Rao, NV and Dey, A (2000) Catalogue of marine molluscs of Andaman and Nicobar Islands Occasional paper no 187 Records of the Zoological Survey of India ZSI 1-323 Available at - NCL, Pune
  • Shanmugam, A; Rajagopal, S and Nazeer, RA Common bivalves of Parangipettai coast Available at - NIO, Goa
  • Ramakrishna; Sarkar, J and Talukdar, S (2003) Marine invertebrates of Digha coast and some recomendations on their conservation Records of the Zoological Survey of India ZSI, Kolkata 101(3-4) 1 Available at - NCL, Pune
  • 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
  • Goswami, BCB (1992) Marine fauna of Digha coast of West Bengal, India Journal of Marine Biological Association of India The Marine Biological Association of India, Cochin 34 115-137 Available at - NIO, RC Kochi
  • Sealifebase Available at - http://www.sealifebase.org/
  • Zacharia, PU; Krishnakumar, PK; Dineshbabu, AP; Vijayakumaran, K; Rohit, P; Thomas, S; Sasikumar, G; Kaladharan, P; Durgekar, RN and Mohamed, KS (2008) Species assemblage in the coral reef ecosystem of Netrani Island off Karnataka along the southwest coast of India Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin, India 50(1) 87-97 Available at - NIO, Goa
  • www.seashellhub.com Available at - http://www.seashellhub.com/
  • 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
  • Kumar, RR; Edward, JKP and Jaikumar, M (2010) Macro benthic community structure on Tuticorin coastal waters, Gulf of Mannar,South East Coast of India World Journal of Fish and Marine Sciences IDOSI publications 2(1) 70-77 Available at - http://www.idosi.org/wjfms/wjfms2%281%2910/14.pdf

Page last updated on:2011-02-23

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