Shell organic matrices in some pearl oysters and other bivalves

Vance, Barry James (1994) Shell organic matrices in some pearl oysters and other bivalves. PhD thesis, James Cook University of North Queensland.

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Abstract

Pearl Oysters of twenty species belonging to four genera of the superfamily Pteriacea, and thirty eight other species of bivalves of thirty-one genera belonging to sixteen superfamilies have been examined to investigate the relationship between particular shell structures and the tissues which secrete the precursors of their organic matrices.

A strictly descriptive nomenclature to adequately describe the parts of the mantles, mantle margins, and shells of pearl oysters is suggested based on morphology and histology.

Inadequacy of taxonomy of the Australian pearl oysters has been revealed by this study. Shell ultrastructure and histology of the mantle and mantle margins are used to increase the number of species of the genus Pinctada.

A large number of the tissues and glands thought to be involved in the secretion of the precursors of the organic matrices of the different shell layers in the animals studied are described, and where known, the roles of their secretions discussed. In particular a detailed light and electron microcopic study of some pearl oysters from Australian waters is presented and forming organic matrices of their nacreous and prismatic layers are described and illustrated. The possible roles played by the pallial blood sinus and the rami of the circum-pallial nerve in pearl oyster shell production are discussed.

Item ID: 33796
Item Type: Thesis (PhD)
Keywords: pearl oyster tissue; pearl oysters; pearl shells; Pteriacea; shell structure; taxonomy
Date Deposited: 21 Jul 2015 05:37
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070202 Animal Growth and Development @ 80%
06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060301 Animal Systematics and Taxonomy @ 20%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8305 Primary Animal Products > 830504 Pearls @ 20%
83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830104 Aquaculture Oysters @ 80%
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