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Appears in Collections:eTheses from Stirling Management School legacy departments
Title: An appraisal of commercial oyster culture in the United Kingdom
Author(s): Hall, Steven
Issue Date: 1982
Publisher: University of Stirling
Abstract: This study presents a detailed technical and economic investigation of the culture of both the Native Flat Oyster (Ostrea edulis) and Pacific Cupped Oyster (Crassostrea gigas). The work is interdisciplinary in its approach. Criteria for the selection of ongrowing technique and site selection have been established. Information published on oyster performance in the sea has been employed to develop deterministic computer simulation models of oyster growth and mortality under different conditions. Models based on the von Bertalannfy growth equation and a multiple regression equation have been derived. The latter employs oyster size and seawater temperature as determinants of oyster growth rate. A comprehensive set of costs associated with oyster culture has been prepared. Together with the multiple regression model these costs have been used to perform investment appraisals by the Internal Rate of Return method on oyster cultivation projects. Production schedules together with market time predictions are presented for projects to cultivate each species of oyster. The effects of species, mortality rate and temperature regime on the commercial viability of oyster culture has been studied in detail. The appraisal demonstrates the value of sensitivity analysis in evaluating aquaculture projects. The present status of the market for oysters is discussed with emphasis on the sale of the Native Flat Oyster. A future marketing strategy for cultivated oysters is proposed.
Type: Thesis or Dissertation

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