PRELIMINARY OBSERVATION ON ROUND PEARL PRODUCTION FROM PEARL OYSTER PTERIA PENGUIN(RDING)

During round pearl production with Pteria penguin,the cone cages and plastic cages were used in the preoperative weakening process of adults Pteria penguin,and the left pearl-sac and right pearl-sac of a host pearl oyster was implanted a round nucleus and a piece of mantle tissue to produce round pearl.The survival rate of the adults was 93.67% and 85.67% after preoperative weakening process in cone cages and plastic cages for 13-15 days.And after 2 months rehabilitation,the mortality and retention rate of the producing shells that was implanted into a nucleus and a piece of mantle tissue in left pearl-sac was 41.85-42.76% and 10.34-12.96%,respectively;and those in right pearl-sac were 39.0-40.0% and 19.67%-20.00%,respectively.The result showed that the proper preoperative weakening process of adults Pteria penguin should be cultured in cone cages,and the nucleus should be implanted in right pearl-sac.