Current stage and problems of bluefin tuna cultivation management

Abstract

The bluefin tuna cultivation had the characteristic of high-risk high-return. However, the price is in the downward trend with the characteristic of high risk left in recent years. In this paper, the difficulty and the correspondence that the cultivation management has are examined from the aspect of risk management.

The difficulty for which now, especially correspondence is necessary is a natural disaster and a price fluctuation. When the natural disaster is first described, it has the character like a pure risk and natural risk. Moreover, the amount of damage is very large. Therefore, the imputation by the insurance is preferable. However, it is not an object of the mutual aid now. In addition, the insurance premium of a private insurance company is large amount of money, and new acquisition of membership is difficult. Therefore, it is necessary to correspond in management.

Next, the character and the correspondence of the price fluctuation are described. The price fluctuation is a speculative risk, and it is necessary to do the challenge by the overall policy. A lot of cultivation management has selected the trade with the discount house now. The purpose of it is to remove the risk of rapid decrease of the price. This is passive possession of the risk, and the retaining is valued a constant price and the shipment.

In the cultivation management, the following correspondences of two points are requested. First, minimize a pure risk to which an especially artificial character is related by a technical approach. The second is a polarity of achieving the maximization of the profit obtained according to the speculative risk.