Pinctada chemnitzii   (Philippi,  1849) (Oyster)
Organism information awaits expert curation
Class: Bivalvia

Image copyrights: FAO

The posterior ear of the shell is better developed and the convexity of the valves is much less, The anterior ear is well developed and the byssal notch is slit-like The hinge line is almost as long as the longest antero-posterior measurement of the valves. Both the anterior and posterior hinge teeth are present, the former small and rounded and the latter large and well developed like a ridge starting a little in advance of the posterior region of the hinge ligament. Correlated with the greater development of the posterior ear, the posterior sinus is very conspicuous. The valves are externally reddish-brown with about four or more whitish or cream yellow radial markings from the umbo to the margin of the shell and the growth processes are rather broad. The nacreous lining is bright and lustrous and is developed to a far greater extent in the left valve than in the right valve and in the latter this border meets the hinge line obliquely outwards. The
non-nacreous border is brownish without any conspicuous blotches.

Synonym (s)
Avicula chemnitzii Philippi, 1849
Avicula pretexta Reeve, 1857
Avicula tegulata Reeve, 1857
Concha margaritifera laevis Chemnitz, 1785
Pteria chemnitzii Dunker, 1872
Pteria pretexta Jameson, 1901
Pteria tegulata Jameson, 1901
Avicula lentiginosa Reeve, 1857
Pinctada epitheca Iredale, 1939
Avicula (Meleagrina) chemnitzii Dunker, 1872
Pteria chemnitzii Gravely, 1941
Pinctada chemnitzii Rao, 1970

Common Name (s)
• Cape Pearl Oyster (English)
Economic Importance and Threats

Habitat:  Rocky, Sandy, Coastal


• Tamil Nadu, Tranquebar INDIA
• Tamil Nadu, Chennai (Lat: 13.08) (Long: 80.28) INDIA
• Tamil Nadu, Tuticorin (Lat: 8.8) (Long: 78.15) INDIA
• Tamil Nadu, Mandapam (Lat: 9.27) (Long: 79.2) INDIA
• Orissa, Balasore INDIA
• Palk Bay INDIA
• Maharashtra, Malvan INDIA
• Tamil Nadu, Tranquebar (Lat: 11.03) (Long: 79.85) INDIA
• Tamil Nadu, Chennai Harbour INDIA
• Tamil Nadu, Tuticorin (Lat: 8.78) (Long: 78.13) INDIA
• Tamil Nadu, Gulf of Mannar (Lat: 8.5) (Long: 79) INDIA
• Orissa, Off Balasore Coast INDIA
• Tamil Nadu, Tuticorin INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• Maharashtra, Malvan (Lat: 16.07) (Long: 73.47) INDIA

Literature Source(s)
  • Rao, VK (1968) Pearl oysters of the Indian region Proceedings of the symposium on Mollusca Part III, Symposium Series 3 Symposium on Mollusca Marine Biological Association of India, India 1017-1028 Available at - NIO RC, Kochi
  • Ray, HC (1977) Contribution to the knowledge of the molluscan fauna of Maungmagan, Lower Burma (with descriptions of one new genus and species of the Family Turridae (Gastropoda) 8) Contribution to the knowledge of the molluscan fauna of Maungmagan, Lower Burma (with descriptions of one new genus and species of the Family Turridae (Gastropoda) 8) Indian Museum, Calcutta 1-150 Available at - Zoological Records (Burma marine)
  • Ingole, BS and Parulekar, AH (1992) Resource potential and status of pearl oyster fishery in India Marine Archaeology 3 32 - 36 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • (1991) Pearl oyster farming and pearl culture Available at -
  • Rao, KV and Rao, KS (1974) Pearl Oysters The commercial molluscs of India Bulletin Of Central Marine Fisheries Research Institute CMFRI, Cochin 25 84-105 Available at -
  • Tike, MJ; Samant, JS; Mohite, SA (2009) Diversity status of minor fish and shellfish along Malvan coast, Maharshtra Indian Journal of Applied and Pure Biology Indian Journal of Applied and Pure Biology, India 24(2) 441-448 Available at -

Page last updated on:2012-02-03

Back to Search