Stimulating investment in pearl farming in ... - World Fish Center

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Abundance, Size Structure and Quality of Silver-lip Pearl Oysters in the Solomon Islands Final, June 2008and individuals found on soft sediments are thought to have been displaced to thesehabitats after detachment of their byssus (Gervis and Sims 1992) or to be attached to brokenshells, coral fragments or pebbles embedded in the sediment (Hynd 1957 in Colgan 1993).The largest area of good habitat appears to be through Hamilton Channel at Waghina and itis this that probably makes it the best potential site from silver-lip, even though it currentlyhas a low population density. However, the economic production of pearls is dependent onthe availability of suitable culture sites, reliable sources of oysters, funding to establish andoperate the farm, grafting technicians and a market for the pearls. The layman’s manual onbasic methods of pearl farming indicates that it is not profitable to hire a grafting technicianunless there are at least 3,000 pearl oysters of the right size and condition in which toimplant nuclei (Haws 2002). As the three major fishing grounds surveyed in the SolomonIslands were estimated to contain between 1,392 and 8,638 silver-lip pearl oysters of anappropriate size, it would appear that there are insufficient stocks at present to support aviable pearl production industry based on the harvest of wild shell and that it isinappropriate at this stage to make any quota available for commercial operations.The Ecology Lab Pty Ltd – Marine and Freshwater Studies Page 14
Abundance, Size Structure and Quality of Silver-lip Pearl Oysters in the Solomon Islands Final, June 20085.0 CONCLUSIONSThe interviews with coastal communities provided information on the location of historicaland present day fishing grounds for silver-lip pearl oysters and some areas of SolomonIslands where silver-lip oysters have recently been observed. The underwater visualcensuses undertaken at the eight historical fishing grounds indicated that the density ofsilver-lip pearl oysters was generally low and that most animals were larger than the sizeconsidered suitable for pearl farming. The sub-samples that were examined had highquality shell with white nacre in the middle of the interior and gold, white, or off-whitemargins. Kia, Mboli Passage and Waghina, the three major fishing grounds surveyed, wereestimated to contain between 1,392 and 8,638 silver-lip pearl oysters of an appropriate sizefor pearl farming. The paucity of the stocks examined and unfavourable size of the majorityof oysters suggest that commercial exploitation of wild silver-lip pearl oysters for pearlculture is not an ecologically or economically viable option at present.The Ecology Lab Pty Ltd – Marine and Freshwater Studies Page 15
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Stimulating investment in pearlfarm
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Appendix IAppendix IIAppendix IIIAp
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various project elements to describ
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PNGSolomon IsPNGCook IsVanuatuFijiF
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Figure 2. Typical coastal habitat f
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to work alongside WorldFish science
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least two weeks before the main sur
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duration of the dive, maximum botto
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3.7 Natural disastersEnvironmental
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• Legislative review is underway
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− Manning Strait islands− Suava
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incentive treatment that fits the l
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continuing to enter the market. Thi
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Provisions for further aquaculture
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• licences will relate to a parti
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species in Australia are 5 - 10 tim
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6.3 Investor’s recommendations fo
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Report on an EU project grant to th
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Summary• Historically, the blackl
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1. IntroductionBlacklip pearl oyste
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3. Nationwide surveysIn May-June 20
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10 spat collectors were attached at
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On a local scale, it was found that
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3025Normalised catch201510500 2 4 6
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30Spat collector -125201510a. NoroL
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Figure 10. The number of Cymatium,
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Figure 11. Intermediate culture tra
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% survival10090HatcheryWild80706050
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Thus, under the regime developed in
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7.3 Retention and mortality after s
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7.5 Seeding of hatchery-produced sp
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have used average values of $25, $3
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9. ReferencesBraley, R.D. 1997. Fin
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depend mainly on the quality of the
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Report to:World Fish CenterSuitabil
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Suitability of Habitats for Growth
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Report to:World Fish CenterWater Te
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Water Temperature and Cyclone Frequ
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Page 140 and 141: Water Temperature and Cyclone Frequ
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Page 224 and 225: 1. Governance and political stabili
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Page 228 and 229: payments, but the authorities have
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10. Labour laws10.1 Foreign workers
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GILLETT, PRESTON AND ASSOCIATES INC
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Page 21. EXECUTIVE SUMMARYPearl far
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Page 42. BACKGROUNDPast research su
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Page 6million; in 2002, it exported
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Page 8the bead in an even, uniform
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Page 10alternative products. Most m
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Page 12fisheries-related activities
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Page 144.3. PolicyThe current gover
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5.2. Stocking densityPage 16Mature
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Page 18or harmful fouling organisms
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Page 20In addition to licensing und
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Page 22Much of this work will have
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Page 24provide them with technical
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Page 26management, disease control,
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Page 28Ministry of Development Plan
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Page 30‘seeding’ means the impl
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Page 326. Provision of statistical
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Page 3414. Aggrieved person may app
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Page 36Division V. Importation, mov
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Page 38(2) Separate fees are payabl
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Page 40Other forms of government su
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Page 42Solomon IslandsPEARL FARMING
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