SUMMARY TO COVER PAGE Taxonomic studies using morphology, anatomy,
and shell characteristics have revealed clearly that the taxonomic
position of Pinctada fucata Gould is in the family Pteriidae. The
distribution is mainly in the coralline patches of the coasts and
the two Oceanic Islands of India. Gross productivity was correlated
with the season and salinity. Seasonal and depth wise pattern and
shade also had an effect on the settlement of barnacles and
mortality of pearl oysters .The treatment mixed algae with raw rice
flour given maturing oysters 62 percentage in lab conditions on day
29 itself . Matured stage III 43 percentage pearl oysters fed with
mixed algae and without feeding changed to stage V. The larval life
cycle was 20 to 25 days in Phase I. In the Phase II 23 to 60 day
old spat, Phase III 60 to 2 years, and the growth rates were
observed as 120 um and 64 um per day. The graft tissue deposited
nacreous coating on the nucleus within 18 days on a 4 mm wax
nucleus .The nacreous pearl sac formed on the shell bead nucleus
which had produced good and lustrous pearls. The inner epithelial
cells with mucous cells produced abnormal sac and D quality pearl
."
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