Journal article
Embryonic and larval development of Pinctada margaritifera (Linnaeus, 1758)
Molluscan Research, Vol.23(2), pp.101-107
2003
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. © Malacological Society of Australia 2013.
Details
- Title
- Embryonic and larval development of Pinctada margaritifera (Linnaeus, 1758)
- Authors
- M S Doroudi (Author) - James Cook UniversityPaul C Southgate (Author) - James Cook University
- Publication details
- Molluscan Research, Vol.23(2), pp.101-107
- Publisher
- Taylor & Francis Ltd.
- Date published
- 2003
- DOI
- 10.1071/MR02015
- ISSN
- 1323-5818
- Organisation Unit
- School of Science and Engineering - Legacy; Australian Centre for Pacific Islands Research; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 99450080602621
- Output Type
- Journal article
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