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On fouling and boring organisms and mortality Of pearl oysters in the farm at Veppalodai, Gulf of Mannar

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Relation http://eprints.cmfri.org.in/935/
 
Title On fouling and boring organisms and mortality
Of pearl oysters in the farm at Veppalodai,
Gulf of Mannar
 
Creator Alagarswami, K
Chellam, A
 
Subject Pearl oyster
 
Description Pearl oysters of the species Pinctada fucata were reared in the Gulf of
Mannar, off Veppalodai, by raft culture, for production of cultured pearls. Observations
revealed a heavy growth of fouling and boring organisms on the pearl
oysters, necessitating frequent shell-cleaning operations. Barnacles, bryozoans and
spats of molluscs, Avicula and Crassostrea, were the significant fouling organisms,
and a seasonal trend was observed in their dominance. The spionid polychaete
Polydora and the clionid sponge Cliona celata were the important boring organisms
causing considerable damage to the shells. Infection by polychaetes, as observed
from the blisters and tumour-like growths on the inner aspect of the shells, was
78.4% and by sponge 20.7% among the shells examined.
 
Publisher CMFRI/ICAR
 
Date 1976
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/935/1/Article_04.pdf
Alagarswami, K and Chellam, A (1976) On fouling and boring organisms and mortality Of pearl oysters in the farm at Veppalodai, Gulf of Mannar. Indian Journal of Fisheries, 23 (1&2). pp. 10-22.