A study of distribution of fresh and frozen sashimi tuna from South East Asia

在渔业科学中，“无主财产”和“共有财产”这两个术语通常被用作同一含义。然而，这些概念应在资源管理系统方面加以区分。可以说，从历史上看，资源管理的内容已经从沿海国和深海捕鱼国之间的无主财产分割问题，转变为区域渔业管理组织下的共同财产管理问题。另一方面，环境经济学不仅试图定量评估商业价值，而且还试图定量评估非商业经济价值。不仅可以评估金枪鱼的商业价值，还可以评估副渔获物的经济价值，这些副渔获物通常因其非商业价值而被丢弃。现在，我们需要认识到一个事实，即非商业性的经济价值已经影响了政策制定，渔民保护海洋环境和资源是需要付出代价的。然而，这些保护行动从来没有在市场上定价，使行动者处于不利地位。因此，有必要建立一个制度，使行动者不会处于不利地位，甚至保护可以成为渔民的经济激励。因此，保护环境和资源的渔民的产品将通过分销区别于其他产品，并被消费者选择。

In fisheries sciences, the terms "un-owned property" and "common property" were often used as the same meaning. However, these concepts should be distinguished in terms of resource management system. We could say that, historically, the context of resource management has been changed from the issue of partitioning of un-owed property among coastal nations and deep-sea fishing nations to the issue of management of common property under regional fisheries management organizations.On the other hand, environmental economics has tried to evaluate not only the commercial value but also non-commercial economic value quantitatively. It is possible to evaluate not only the commercial vale of tuna also the economic value of by-catch species, which are usually discarded for its non-commercial value. Now, we need to recognize the fact that the non-commercial economic values have influenced the policymaking.It costs for fishermen to conserve of the marine environments and resources. However these actions for the conservation have never priced in the market so that action takers have been disadvantaged. Therefore, it is necessary to build a system that action takers would not be disadvantaged, or even conservation can be economical incentives for fishermen. So the products from fishermen who conserve environments and resources will be distinguished from other products trough the distribution and chosen by consumers.