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Ecofriendly onshore marine pearl culture - an overview

CMFRI Repository

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Relation http://eprints.cmfri.org.in/2384/
 
Title Ecofriendly onshore marine pearl culture - an overview
 
Creator Rao, G Syda
 
Subject Mariculture
Pearl oyster
 
Description The onshore marine pearl culture technology developed by
CMFRI at Visakhapatnam has been taken up on a commercial scale in the
vicinity of Visakhapatnam. Hatcheries for the pearl oyster
Pinctada fucata have been established. The pearl oysters were
grown in cement tanks of 75t capacity from 5 mm to 50 mm DVM. The growth
rates of pearl oysters fed with different species of diet
Chaetoceros, Nanochloropsis and Isochrysis at different cell
concentration showed wide variations. The growth rate of oysters
reared at a density of 100 nos. /sq. m is better compared to that at higher
densities. The depth of seawater and rate of water exchange per day have
been standardized. Raw seawater filtered through a specially designed
slow sand filter is being used in hatchery and culture tanks. The
filtered seawater is directly used for all purposes without any treatment
with chemicals or antibiotics. Usage of chemicals is undesirable even for
cleaning purposes. The algal cell concentration up to 1.2 million/ml
was achieved on a sustained basis in outdoor mass culture tanks. Use
of only live feed and avoiding chemicals make this technology
ecofriendly. Severalfactors related to growth and maintenance of hygiene
of pearl oysters in onshore culture tanks are discussed.
 
Publisher The Marine Biological Association of India
 
Contributor Menon, N G
Pillai, P P
 
Date 2001
 
Type Book Section
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/2384/1/Article_23.pdf
Rao, G Syda (2001) Ecofriendly onshore marine pearl culture - an overview. In: Perspectives in Mariculture. The Marine Biological Association of India, Cochin, pp. 259-264.