Shell boring polychaete (Polydora sp.) infestation in black lipped pearl oyster Pinctada margaritifera

Laxmilatha, P and Pattnaik, Phalguni and Rao, M Prasada and Rao, T Nageswara and Padmajarani, S (2013) Shell boring polychaete (Polydora sp.) infestation in black lipped pearl oyster Pinctada margaritifera. Marine Fisheries Information Service; Technical and Extension Series (215). pp. 25-26.

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Abstract

Black lipped pearl oyster Pinctada margaritifera of size ranging from 3 to 40 mm were collected from the rocky beach of Lawson’s Bay along Visakhapatnam coast and were reared in the marine hatchery of the Visakhapatnam Regional Centre of CMFRI. The oysters were reared in 1 t capacity fibre glass tanks in 32‰ filtered seawater, provided with continuous aeration and mixed microalgal diet comprising Isochrysis galbana and Cheatoceros calcitrans. During the course of domestication for a period of nearly 22 months, the oysters were regularly cleaned of fouling and boring organisms at monthly intervals. The growth was also recorded periodically. During this period,

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