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

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.

[img]
Preview
PDF
Article_04.pdf

Download (631kB)
Related URLs:

    Abstract

    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.

    Item Type: Article
    Uncontrolled Keywords: fouling and boring organisms; mortality; pearl oysters; Veppalodai Gulf of Mannar
    Subjects: Molluscan Fisheries > Pearl oyster
    Divisions: CMFRI-Kochi > Marine Capture > Molluscan Fisheries
    Subject Area > CMFRI Brochures > CMFRI-Kochi > Marine Capture > Molluscan Fisheries
    CMFRI-Kochi > Marine Capture > Molluscan Fisheries
    Depositing User: Dr. V Mohan
    Date Deposited: 09 Jun 2010 08:32
    Last Modified: 09 Sep 2015 15:09
    URI: http://eprints.cmfri.org.in/id/eprint/935

    Actions (login required)

    View Item View Item