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Economics of Ocean Culture of Giant Clams: Internal Rate of Return Analysis for Tridacna gigas

Author

Listed:
  • Tisdell, Clem
  • Tacconi, L.
  • Barker, J.R.
  • Lucas, J.S.

Abstract

Estimates the internal rate of return on costs of investment in a ‘standard’ giant clam farm involved in the ocean phase of giant clam mariculture as a function of the period of ocean growout of Tridacna gigas using Australian data obtained from trials at Orpheus Island Marine Research Station. The standard ocean 'farm is assumed each year to place 100,000 seed clams of approximately one year of age. The optimal length of time to hold them is estimated to be 10 years when they are sold for their meat at $5 per kg at the farm gate. This yields an estimated internal rate of return of 19.5% and maximises the net present value or capitalised value of the farm. The method used to estimate the optimal rotation or harvest cycle for giant clams is similar to that used in the forestry economics literature for determining forest rotation cycles.

Suggested Citation

  • Tisdell, Clem & Tacconi, L. & Barker, J.R. & Lucas, J.S., 1991. "Economics of Ocean Culture of Giant Clams: Internal Rate of Return Analysis for Tridacna gigas," Research Reports and Papers in Economics of Giant Clam Mariculture 154860, University of Queensland, School of Economics.
    • Handle: RePEc:ags:uqsegc:154860
    DOI: 10.22004/ag.econ.154860
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    1. Tacconi, Luca & Tisdell, Clem, 1992. "Economics of Giant Clam Production in the South Pacific - Fiji, Tonga and Western Samoa," Research Reports and Papers in Economics of Giant Clam Mariculture 206554, University of Queensland, School of Economics.
    2. Tisdell, Clem, 1989. "Aquaculture as a use of the Coastal Zone: Environmental and Economic Aspects, Giant Clam Farming as a Development," Research Reports and Papers in Economics of Giant Clam Mariculture 206399, University of Queensland, School of Economics.
    3. Firdausy, Carunia & Tisdell, Clem, 1991. "Economic Returns from Farming Different types of Seaweed (Eucheuma) and for Farms of Different Sizes in Nusa Penida, Bali, Indonesia," Research Reports and Papers in Economics of Giant Clam Mariculture 206548, University of Queensland, School of Economics.
    4. Firdausy, Carunia & Tisdell, Clem, 1989. "Seafarming as a Part of Indonesia's Economic Development Strategy - Seaweed and Giant Clam Mariculture as Cases," Research Reports and Papers in Economics of Giant Clam Mariculture 206397, University of Queensland, School of Economics.
    5. Tacconi, Luca & Tisdell, Clement A., 1991. "Aid for Village-Based Rural Projects in LDCs: Experiences, Project Appraisal and Selection, ACIAR and Giant Clam Culture as a Case," 1991 Conference (35th), February 11-14, 1991, Armidale, Australia 146403, Australian Agricultural and Resource Economics Society.
    6. Tisdell, Clem & Tacconi, Luca & Barker, J.R. & Lucas, J.S., 1991. "Economics of Ocean Culture of Giant Clams: Internal Rate of Return Analysis for Tridacna gigas," Research Reports and Papers in Economics of Giant Clam Mariculture 206543, University of Queensland, School of Economics.
    7. Vuki, Veikila & Tisdell, Clem & Tacconi, Luca, 1991. "Subsistence Economic Activities and Prospects for Clam Farming in Ono-i-Lau, Fiji: Socio-economic Factors," Research Reports and Papers in Economics of Giant Clam Mariculture 206545, University of Queensland, School of Economics.
    8. Tacconi, Luca & Tisdell, Clem, 1992. "Exports and Export Markets for Giant Clam Products in the South Pacific: Fiji, Tonga and Western Samoa," Research Reports and Papers in Economics of Giant Clam Mariculture 206555, University of Queensland, School of Economics.
    9. Tisdell, Clem, 1991. "A Report on the Test Marketing of Giant Clams as Aquarium Specimens in Brisbane, Australia," Research Reports and Papers in Economics of Giant Clam Mariculture 206547, University of Queensland, School of Economics.
    10. Tisdell, Clem, 1990. "Exploring the Demands for Farmed Giant Clams and their Components: Approaches and Problems," Research Reports and Papers in Economics of Giant Clam Mariculture 206476, University of Queensland, School of Economics.
    11. Tisdell, Clem, 1989. "Pacific Giant Clams and their Products: An Overview of Demand and Supply Factors," Research Reports and Papers in Economics of Giant Clam Mariculture 206474, University of Queensland, School of Economics.
    12. Firdausy, Carunia & Tisdell, Clem, 1990. "The Potential Demand for Giant Clams in Indonesia and their Status: A Report on a Survey of Four Coastal Villages in Bali and Java," Research Reports and Papers in Economics of Giant Clam Mariculture 206485, University of Queensland, School of Economics.
    13. Tisdell, Clem, 1992. "Interest of Asian Restaurants in Queensland in Using Giant Clam Meat in their Cuisine and their Knowledge of it," Research Reports and Papers in Economics of Giant Clam Mariculture 206559, University of Queensland, School of Economics.
    14. Tisdell, Clem, 1989. "Market for Giant Clam Shells: Report on a Survey of Retailers and Wholesalers in Southeast Queensland, Australia," Research Reports and Papers in Economics of Giant Clam Mariculture 206396, University of Queensland, School of Economics.
    15. Tisdell, Clem & Wittenberg, Rene, 1989. "Market for Giant Clams as Aquarium Specimens: Report on a Survey of Retailers of Supplies for Saltwater Aquariums, Southeast Queensland, Australia," Research Reports and Papers in Economics of Giant Clam Mariculture 206398, University of Queensland, School of Economics.
    16. Tacconi, Luca & Tisdell, Clem, 1992. "Institutional Factors and Giant Clam Culture and Conservation in the South Pacific: Observations from Fiji, Tonga and Western Samoa," Research Reports and Papers in Economics of Giant Clam Mariculture 206556, University of Queensland, School of Economics.
    17. Tisdell, Clem & Lucas, J.S. & Thomas, W.R., 1990. "An Analysis of the Cost of Producing Giant Clam (Tridacna Gigas) Seed in Australia," Research Reports and Papers in Economics of Giant Clam Mariculture 206480, University of Queensland, School of Economics.
    18. Vuki, Veikila & Tisdell, Clem & Tacconi, Luca, 1991. "Socio-economic Aspects of Giant Clams in the Lau Group, Fiji and Farming Prospects: Results of Field Research," Research Reports and Papers in Economics of Giant Clam Mariculture 206544, University of Queensland, School of Economics.
    19. Firdausy, Carunia & Tisdell, Clem, 1990. "Assessing Species for Mariculture in Developing Countries: A Review of Economic Considerations," Research Reports and Papers in Economics of Giant Clam Mariculture 206479, University of Queensland, School of Economics.
    20. Tacconi, Luca & Tisdell, Clem, 1992. "Domestic Markets and Demand for Giant Clam Meat in the South Pacific Islands - Fiji, Tonga and Western Samoa," Research Reports and Papers in Economics of Giant Clam Mariculture 206553, University of Queensland, School of Economics.
    21. Pollock, Nancy J., 1992. "Giant Clams in Wallis: Prospects for Development," Research Reports and Papers in Economics of Giant Clam Mariculture 206557, University of Queensland, School of Economics.
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    More about this item

    Keywords

    Production Economics;

    JEL classification:

    • Q57 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Ecological Economics
    • Q21 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Demand and Supply; Prices
    • Q22 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Fishery

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