Saveh Doroudi, Mehdi S., and Southgate, Paul C. (2003) Embryonic and larval development of Pinctada margaritifera (Linnaeus, 1758). Molluscan Research, 23 (2). pp. 101-107.

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Abstract

We describe the developmental stages of the black-lip pearl oyster, Pinctada margaritifera (Linnaeus, 1758), larvae from fertilisation through embryonic development and larval growth in the laboratory at 28 ± 1°C. Larvae were anesthetised, fixed, critical-point dried and examined using a scanning electron microscope. We examined embryonic development (fertilisation, polar body, blastomeres, gastrula) and attributes of the larval shell (size, prodissoconch I/II, growth lines, provinculum, shell fracture) and larval velum. The first polar body formed 24 min after fertilisation and fertilised eggs had a mean diameter of 59.9 ± 1.4 μm. The earliest actively swimming trochophore appeared 8–12 h after fertilisation. The D stage was reached approximately 24 h after fertilisation and measured 79.7 ± 2.3 μm in shell length. Ten-day-old larvae had umbones that arose opposite each other above the hinge axis and 22-day-old larvae, with a mean shell length of 230.8 ± 4.9 μm, developed a pigment spot just before entering the pediveliger stage.

Item ID:	6931
Item Type:	Article (Research - C1)
ISSN:	1323-5818
Keywords:	hinge; morphology; pearl oyster; scanning electron microscope
Date Deposited:	23 Feb 2010 04:33
FoR Codes:	06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 100%
SEO Codes:	83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830199 Fisheries - Aquaculture not elsewhere classified @ 100%
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