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

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Figure 5. The two basic types ofcollector compared in the Friedman andBell (1996) study. Twenty of each typewere deployed, half in protective meshbags and half open. The plastic sheetingwas more effective than the shade meshand the bags proved to have noprotective effect.4.3 Seasonal pattern of spatfallFrom June 1997 to October 2003, ten spat collectors were deployed at three sites closeto Gizo and four sites in Noro for two month immersion times, every two months. Onharvesting the collectors the spat were counted and measured. The same collectortype was used throughout, and the same staff were responsible for all practical aspectsof the collection; this makes this an excellent dataset from which to extract seasonalpatterns of settlement.To examine the seasonal pattern of spat settlement we first normalised for theconsistent differences between sites by dividing the catch for each period at each siteby the overall median catch for that site. The normalised catch from all of the sevensites were combined and plotted against month as a single plot (Figure 6). A timecatchrelationship was then determined by least-squares regression analysis. The bestfit to the data was obtained with a sine function;Catch = 1.8 + 1.34·sin(2·π· (Month)/12+7.9)…………..(equation 1)8
3025Normalised catch201510500 2 4 6 8 10 12MonthFigure 6. Seasonal pattern of spat collection during the 1997-2003 period. Each dotrepresents a single site, with the dot plotted in the middle of the two monthdeployment period. The curve is fitted by least-squared linear regression.Figure 6 and equation 1 point to a cyclical pattern of recruitment to spat collectors,with a minimum in winter and a maximum in collectors deployed from Octoberthrough to February. There was no period of the year in which no spat recruited,suggesting a prolonged breeding season. In the limited experience of Solomon Islandhatcheries, operating at ambient temperature, the life of blacklip pearl oyster larvaeprior to metamorphosis is around 25-30 days, suggesting a wild spawning peak inSeptember-December.31.531.05 m15 m30 mTemperature ( o C)30.530.029.529.028.5Feb Mar Apr May Jun Jul AugFigure 7. Water temperature at three depths in the Nusa Tupe lagoon for the first halfof 2007. Boxcar smoothing has been applied, using the running 3.5 h mean(individual records are at 30 minute intervals.9
Page 1 and 2: Stimulating investment in pearlfarm
Page 3 and 4: Appendix IAppendix IIAppendix IIIAp
Page 5 and 6: various project elements to describ
Page 7 and 8: PNGSolomon IsPNGCook IsVanuatuFijiF
Page 9 and 10: Figure 2. Typical coastal habitat f
Page 11 and 12: to work alongside WorldFish science
Page 13 and 14: least two weeks before the main sur
Page 15 and 16: duration of the dive, maximum botto
Page 17 and 18: 3.7 Natural disastersEnvironmental
Page 19 and 20: • Legislative review is underway
Page 21 and 22: − Manning Strait islands− Suava
Page 23 and 24: incentive treatment that fits the l
Page 25 and 26: continuing to enter the market. Thi
Page 27 and 28: Provisions for further aquaculture
Page 29 and 30: • licences will relate to a parti
Page 31 and 32: species in Australia are 5 - 10 tim
Page 33 and 34: 6.3 Investor’s recommendations fo
Page 35 and 36: Report on an EU project grant to th
Page 37 and 38: Summary• Historically, the blackl
Page 39 and 40: 1. IntroductionBlacklip pearl oyste
Page 41 and 42: 3. Nationwide surveysIn May-June 20
Page 43 and 44: 10 spat collectors were attached at
Page 45: On a local scale, it was found that
Page 49 and 50: 30Spat collector -125201510a. NoroL
Page 51 and 52: Figure 10. The number of Cymatium,
Page 53 and 54: Figure 11. Intermediate culture tra
Page 55 and 56: % survival10090HatcheryWild80706050
Page 57 and 58: Thus, under the regime developed in
Page 59 and 60: 7.3 Retention and mortality after s
Page 61 and 62: 7.5 Seeding of hatchery-produced sp
Page 63 and 64: have used average values of $25, $3
Page 65 and 66: 9. ReferencesBraley, R.D. 1997. Fin
Page 67 and 68: depend mainly on the quality of the
Page 69 and 70: Report to:World Fish CenterSuitabil
Page 71 and 72: Suitability of Habitats for Growth
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Suitability of Habitats for Growth
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Water Temperature and Cyclone Frequ
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Report on an EU project grant to th
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1. Governance and political stabili
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Despite its present weaknesses, eff
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payments, but the authorities have
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to recede and presumably vanish und
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outcome is far from certain. There
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existing links, at locations within
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6. Forms of co-investment6.1 Partne
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8. Taxation and incentives8.1 Direc
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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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