This paper analyses the regional evolution of the market structure in the Spanish turbot industry, which is the leading turbot producer in Europe, using different concentration rates. The analysis is performed considering several factors that have influenced the evolution of the sector, the most important being the application of technology, business strategies and the institutional framework. The results confirm a process of concentration. Starting from an initial phase in which the sector was composed of a considerable number of small companies, this industry has evolved towards a situation in which only two large firms dominate the market.

中文翻译：

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西班牙大菱鲆养殖业的市场集中度：区域分析

本文使用不同的集中率分析了西班牙大菱鲆行业市场结构的区域演变，西班牙大菱鲆是欧洲领先的大菱鲆生产商。进行分析时考虑了影响该行业发展的几个因素，最重要的是技术的应用、业务战略和制度框架。结果证实了一个集中过程。从该行业由大量小公司组成的初始阶段开始，该行业已经发展到只有两家大公司主导市场的局面。