Pinctada sugillata   (Reeve,  1857) (Oyster)
Organism information awaits expert curation
Class: Bivalvia

The hinge is very much shorter than the widest antero-posterior axis of shell. The antero-posterior measurement is almost equal to the dorso ventral measurement. The anterior ear in both valves is small and the byssal notch is a moderately wide slit. The anterior ears are slightly bent towards the right so that the hinge line when viewed from the top, is seen to be deflected anteriorly to the right side. The posterior border of the shell shows a small, not well-defined sinus which is correlated with the very poor development of the posterior ear. The convexity of the valves is not marked, particularly that of the right valve which is only moderately convex. The hinge teeth are present but inconspicuous in the adult specimens examined, the anterior one being roundish and small and the posterior one seen as a streak. The colouration of the valves for the most part from the hinge and extending over the body of the shell is dark gray with a tinge of brown. The lower and posterior regions of the valves are light yellow and gray. There are about six yellowish radial markings starting from the umbo and extending towards the margin. The nacreous region on the inner surface of both the valves is well developed. Posteriorly the nacreous border as it meets the hinge line presents a wavy course.

Synonym (s)
Pteria (Margaritifera) sugiliata Jameson, 1901
Meleagrina sugillata Hedley, 1910
Pinctada albina sugillata Hynd, 1955

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



• Gujarat, Gulf of Kachchh (Lat: 22.6) (Long: 69.5) INDIA
• Tamil Nadu, Tuticorin (Lat: 8.8) (Long: 78.15) INDIA
• Tamil Nadu, Chennai Harbour INDIA
• Tamil Nadu, Tuticorin INDIA
• Lakshadweep, Suheli INDIA (Record: 01/1987-03/1987)
• Lakshadweep, Kalpeni INDIA (Record: 01/1987-03/1987)
• Lakshadweep, Kavaratti INDIA (Record: 01/1987-03/1987)
• Lakshadweep, Andrott INDIA (Record: 01/1987-03/1987)
• Lakshadweep, Agatti INDIA (Record: 01/1987-03/1987)
• Lakshadweep, Bangaram INDIA (Record: 01/1987-03/1987)
• Lakshadweep, Kadamatt INDIA (Record: 01/1987-03/1987)
• Lakshadweep, Kiltan INDIA (Record: 01/1987-03/1987)
• Lakshadweep, Chettalatt INDIA (Record: 01/1987-03/1987)
• Lakshadweep, Bitra INDIA (Record: 01/1987-03/1987)

Literature Source(s)
  • (2002) Lakshadweep Islands biodiversity strategy and action plan (Version: 3)
  • 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
  • Subba Rao, NV and Sastry, DRK (2005) Fauna of Marine National Park, Gulf of Kuchchh (Gujarat) ZSI 79 pp Available at - NCL, Pune
  • 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
  • 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 -
  • 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 -
  • Appukuttan, KK; Chellam, A; Ramadoss, K; Victor, ACC and Meiyappan, MM (1989) Molluscan resources Bulletin Of Central Marine Fisheries Research Institute CMFRI, Cochin 43 77-92 Available at -
  • Pillai, PKM and Augustine, SK (2000) A code list of common marine living resources of the Indian seas CMFRI Special Publication No.12 CMFRI 1-115 Available at -

Page last updated on:2011-12-16

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