Incorporating production and price risk into the model reduced the expected NPV of the mabé pearl farm to $297,507. The MIRR and benefit-cost ratio of the modelled mabé pearl farm were 22.64% and 7.24, respectively, with a payback period of 3 years. Annual production of 5400 mabé pearls generated an NPV of $491,864. The West African mangrove oyster, Crassostrea tulipa (Lamarck, 1819), has. penguin oysters with an estimated capital cost of $7319. tulipa spat were observed on undersides of collectors deployed horizontally. The downstream mabé pearl farm modelled in this study comprised two 100-m longlines supporting 2000 implanted Pt. The MIRR generated was 12.24%, with a benefit-cost ratio was 1.52, and a payback period of 4 years. These reports may also contain advice and recommendations for producers with respect to spat collection activities. margaritifera pearl oysters (sold to round pearl culture operations) with estimated NPV of $10,439. Oyster spatfall prediction updates are released on a regular basis during the recruitment season. The spat collection operation produced 2332 saleable P. Forms of Oyster Catcher optimized for spat collection can be used in hatcheries or appropriate natural environments as a biodegradable oyster shell. The spat collection farm modelled in this study comprised four 100-m longlines supporting 1240 commercial spat collectors, with an estimated capital cost of $1245 (all figures in USD). margaritifera spat collection operations, for mabé pearl production. community-based pearl oyster spat collection and mab pearl production in the western Pacific. This study determined the potential profitability of (1) community-based pearl oyster spat collection operations targeting Pinctada margaritifera, and the subsequent sale of pearl oysters to round pearl farms and (2) the use of Pteria penguin, collected incidentally from P. Cultured pearl production, and associated activities, are of crucial social and economic importance to remote coastal communities in Polynesia and the western Pacific.

Oyster spat collection