Faculty of Economics and Business Administration, University of Santiago de Compostela, Av. Burgo Nacións s/n, 15782, Santiago de Compostela, A Coruña, Spain,
Ambio. 2013 Dec;42(8):937-50. doi: 10.1007/s13280-013-0449-8.
Through a comparative analysis of prices in capture fisheries and aquaculture sectors, the objectives of this paper are a) to investigate three the trends in prices of forage catches to feed the aquaculture species, b) to analyze the amount of fish species need to feed aquaculture species in order to assess the level of efficiency in resource use, and c) to examine the degree of economic concentration either in wild-catch industry and aquaculture sectors. The results show that prices of cultivated species are higher than prices of the same species when harvested from the sea. We explain this fact by the interplay of three forces. First, the amount of wild fish to feed aquaculture species continues to improve over time. Second, the pressure of fishing activities has not been reduced since catches of most forage fishes are declining, which induce higher prices of capture species that feed aquaculture production. Third, the level of seafood market concentration is significantly higher in aquaculture than in wild catches, which generates higher prices in aquaculture.
通过对捕捞渔业和水产养殖业部门价格的比较分析,本文的目的是:(a) 研究饲料鱼类的价格趋势,以了解水产养殖物种的情况;(b) 分析养殖物种所需的鱼类物种数量,以评估资源利用效率;(c) 检验野生捕捞业和水产养殖业部门的经济集中程度。结果表明,养殖物种的价格高于从海中收获的同种物种的价格。我们通过三种力量的相互作用来解释这一事实。首先,用于喂养水产养殖物种的野生鱼类的数量随着时间的推移不断增加。其次,由于大多数饲料鱼类的捕捞量正在减少,捕捞活动的压力并没有减轻,这导致了用于水产养殖生产的捕捞物种的价格更高。第三,海鲜市场的集中程度在水产养殖中明显高于野生捕捞,这导致了水产养殖中的高价格。