The economic impact of skeletal anomalies in aquaculture farming is a significant issue for the industry, as deformed fish are frequently discarded because of their low survival rate and a variety of other disadvantages, including increased costs, consumer distrust of aquaculture products, and ethical concerns. The goal of this article is to propose a method for calculating the direct costs of severe skeletal anomalies in typical Mediterranean seabream and seabass aquaculture hatcheries using a deterministic static model programmed in MATLAB that simulates their annual operation. Our findings suggest that larger hatcheries experience higher direct costs associated with severe skeletal anomalies but have better financial stability and significantly higher expected profits. Mean results indicate that the annual economic losses of severe skeletal anomalies for seabream and seabass Mediterranean aquaculture are 22.88 million euros per year for a scenario of low severe skeletal anomalies, 65.34 million euros per year for a scenario of medium severe skeletal anomalies, and 115.98 million euros per year for a scenario of high severe skeletal anomalies. Furthermore, some options for increasing the financial stability of the hatcheries are to increase the sale price of fingerlings, reduce the feed conversion ratio, and reduce the feed unit cost.

中文翻译：

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评估地中海鲷鱼和鲈鱼孵化场严重骨骼异常的经济影响

水产养殖中骨骼异常的经济影响是该行业的一个重大问题，因为畸形鱼因其成活率低和各种其他缺点而经常被丢弃，包括成本增加、消费者对水产养殖产品的不信任和道德问题。本文的目标是提出一种方法，使用在 MATLAB 中编程的确定性静态模型来模拟地中海鲷鱼和鲈鱼水产养殖孵化场的年度运行情况，计算严重骨骼异常的直接成本。我们的研究结果表明，较大的孵化场与严重骨骼异常相关的直接成本较高，但财务稳定性较好，预期利润也较高。平均结果表明，地中海养殖鲷鱼和鲈鱼的严重骨骼异常每年造成的经济损失为：低度严重骨骼异常情况下每年 2288 万欧元，中度严重骨骼异常情况下每年 6534 万欧元，中度严重骨骼异常情况下每年 11598 万欧元。每年欧元用于严重严重骨骼异常的情况。此外，提高孵化场财务稳定性的一些选择是提高鱼种的销售价格、降低饲料转化率和降低饲料单位成本。