Alagarswami, K and Dharmaraj, S and Chellam, A and Velayudhan, T
S (1989) Larval and juvenile rearing of black-lip pearl oyster,
Pinctada margaritifera (Linnaeus). Aquaculture, 76 (1-2). pp.
43-56. Full text not available from this repository. The black-
lip pearl oyster, Pinctada margaritifera (Linnaeus), has been
cultured in the experimental shellfish hatchery at Tuticorin,
India. The flagellates Isochrysis galbana and Pavlova lutheri
were used independently as larval food at a concentration of 5
cells/μl up to day 5 and the ration was doubled thereafter until
spat setting. The initial larval density was 1/ml. Straighthinge
veliger stage (75×60 μm) was reached in 20 h, umbo stage
(140×130 μm) on day 12, pediveliger (220×210 μm) on day 20 and
plantigrade (260×240 μm) on day 23, and spat of 350×300 μm
appeared on day 28. I. galbana promoted faster growth and early
spat setting as compared to P. lutheri. The modal component of
the larval population showed an average growth of 10.98 μm/day.
A total of 6.3% of th