Structural changes and imperfect competition in the supply chain of Japanese fisheries product markets
Structural changes and imperfect competition in the supply chain of Japanese fisheries product markets
复制标题
日本水产品市场供应链结构变化与不完全竞争
DOI：
10.1007/s12562-014-0788-9
复制
发表时间：
2014
影响因子：
1.9
通讯作者：
and Nobuyuki Yagi
中科院分区：
文献类型：
--
作者：
Nakajima;Toru;Takahiro Matsui;Yutaro Sakai;and Nobuyuki Yagi
本研究分析了1976 - 2009年日本渔业产品供应链中不完全竞争的存在，以及不完全竞争存在的时间。利用非平稳时间序列鲁棒结构模型对不完全竞争进行实证分析，发现1993年前消费区域批发市场的马鲛鱼、日本飞鱼和沙丁鱼在上游市场上具有市场支配力。下游市场中，马鲛鱼和沙丁鱼的市场支配力在1993年以前和1992年以后都有所增加，太平洋刀鱼和红鲷鱼的市场支配力在1993年以前也有所增加。然而，在一些时期，发现的不完全竞争大多低于上游市场。这项研究的结果与之前的一项研究一致，该研究指出，批发市场的卖家失去了谈判能力，因为大型零售商的出现，如超市，他们直接从生产商、贸易公司、生产现场的批发商等处购买，特别是在1992年之后。与前人研究的比较表明，市场支配力与价格不对称传导密切相关。
This study analyzed the existence of imperfect competition, and the time period for which it existed in the supply chain of fisheries products in Japan from 1976 to 2009. An empirical analysis of the imperfect competition using a structural model robust to nonstationary time series revealed that sellers of horse mackerel, Japanese flying squid, and sardines in wholesale markets located in consumption areas had market power before 1993 in upstream markets. In downstream markets, retailers of horse mackerel and sardines had market power not only before 1993 but also after 1992, and retailers of Pacific saury and red seabream had market power before 1993. However, there were a number of periods when the detected imperfect competition was mostly less than that in upstream markets. The findings of this study are consistent with those of a previous study, which pointed out that sellers in wholesale markets lost negotiation power due to the emergence of large retailers, such as supermarkets, who buy directly from producers, trading companies, wholesalers at production sites, etc., especially after 1992. A comparison with another previous study indicates that market power and asymmetric price transmission are closely related.