Book chapter
Reproduction, Development and Growth
The Pearl Oyster, pp.131-186
Elsevier Science Ltd.
2008
Abstract
Pearl oysters are typical marine bivalves in many features of their reproductive biology, embryological and larval development, and growth. They are protandrous hermaphrodites with various sex reversals during their lifetime in response to complex interactions of endogenous and environmental factors. They develop first as males and retain this condition for one or several reproductive cycles until changing sex. Pearl oysters have diffuse gonadial tissue, which is composed of small granular bags, acini. The acini contain stem cells, which may develop into oocytes or spermatocytes, the gametogenic processes being largely supported by energy and metabolites from the digestive gland and adductor muscle. The overall pattern of reproduction in pearl oyster populations is synchronous, with male and females undergoing sequential processes that lead to a simultaneous breeding period. Pearl oyster populations may spawn once or multiple times during a year. Spawning in pearl oysters is usually triggered by a change in the environment or presence of water-borne gametes. Early development follows the typical marine bivalve pattern of trochophore, D-stage veliger, umbo stage, eye-spot stage, pediveliger, metamorphosis, and newly settled spat. It takes in the order of 3-4 weeks. Development rates are particularly influenced by food availability and stored lipid is probably the primary energy reserve used during metamorphosis. © 2008 Elsevier B.V. All rights reserved.
Details
- Title
- Reproduction, Development and Growth
- Authors
- P E Saucedo (Author) - James Cook UniversityPaul C Southgate (Author) - James Cook University
- Contributors
- Paul C Southgate (Editor)John Lucas (Editor)
- Publication details
- The Pearl Oyster, pp.131-186
- Publisher
- Elsevier Science Ltd.
- Date published
- 2008
- DOI
- 10.1016/B978-0-444-52976-3.00005-X
- 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
- 99449294102621
- Output Type
- Book chapter
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