PINCTADA VULGARIS (PEARL OYSTER)​

CLASSIFICATION OF PINCTADA VULGARIS (PEARL OYSTER)​

KINGDOM :- ANIMALIA (Multicellular eukaryotic organisms)

PHYLUM :- MOLLUSCA (Unsegmented bilaterally symmetrical and provided with visceral mass, foot and mantle.)

CLASS :- PELECYPODA OR BIVALVIA (Bivalve shell.)

ORDER :- OSTREIDA  (Gills form vertical folds.)

FAMILY :- MARGARITIDAE

GENUS :- Pinctada

SPECIES :- vulgaris

GEOGRAPHICAL DISTRIBUTION

  • It has wide distribution except in cold zones. It is very common in the Gulf of Kutch. Tropical and temperate seas, Pacific and Atlantic coast.

HABIT AND HABITAT

  • Pinctada lives in the Gulf of California and in West Indian sea water.

PINCTADA VULGARIS (PEARL OYSTER)​

GENERAL CHARACTERSTICS OF PINCTADA VULGARIS (PEARL OYSTER)​

  • Commonly called as Indian pearl oyster
  • Shell valves are unequal and the hinge line is straight, produced at each end into a short ear or wing like process. 
  • Left shell is large, convex and permanently attached to rocks by a strong cable of byssal threads. 
  • Right shell is smaller and thinner and covers viscera. 
  • Surface of the shell is coarse, irregular and ruffled and bears radiating bands terminating at the margins into finger like projections, which may disappear in order specimens. 
  • Like Pecten, there is a single adductor muscle. 
  • Right and left mantle lobes are quite free.
  • Pearl oysters feed in the same manner as clams.
PINCTADA VULGARIS (PEARL OYSTER)​

ECONOMIC IMPORTANCE

  • Oyster’s shell secretes pearls whenever any insect enters the shell and causes irritation. They are cultivated in pearl oyster industry. Most of our germ pearls are obtained from pearl oyster.

IDENTIFICATION

  • The animal contains ear like processes and all above features, hence it is Pinctada vulgaris.

PINCTADA VULGARIS (PEARL OYSTER)​
PINCTADA VULGARIS (PEARL OYSTER)​
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