Rational management is required for the profitability of the Japanese aquaculture industry and to promote investment in the industry. Although bioeconomic modeling could facilitate rational aquaculture management, it has not been applied in Japanese marine aquaculture. In the present study, we developed a bioeconomic model for oyster farming in Miyagi prefecture, Japan, and determined the optimal harvest schedules under labor constraints. Low, moderate, and high temperature scenarios were simulated to investigate the effects of changes in seawater temperature on farm productivity. Early initiation of harvest, particularly from late October or early November, achieved the maximum profit under the environmental and economic conditions in the present study. The moderate temperature scenario (current temperature conditions) had a high total profit (962,890 JPY) when harvest was initiated on October 29. The high temperature scenario had lower profits than the profits under current conditions, indicating that climate change could have adverse effects on oyster farming profitability in Miyagi prefecture.

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日本宫城县牡蛎养殖的生物经济模型

为了实现日本水产养殖业的盈利并促进对该产业的投资，需要进行合理的管理。尽管生物经济模型可以促进合理的水产养殖管理，但尚未在日本海洋水产养殖中应用。在本研究中，我们开发了日本宫城县牡蛎养殖的生物经济模型，并确定了劳动力限制下的最佳收获时间表。模拟了低，中和高温情景，以研究海水温度变化对农场生产力的影响。在本研究中，提早开始收获，特别是从10月下旬或11月初开始，在环境和经济条件下实现了最大的利润。