The COVID-19 pandemic has spread around the world, disrupting economies, societies and daily life. Early research anticipated significant negative impacts for the globalized seafood supply network. Here, we explore the impact of the COVID-19 pandemic on wholesale prices from five major seafood markets around the world. An anomalies analysis was used to establish a 5-year baseline price for each commodity. Daily price data from 2020 were compared to the baseline to identify collapses (>1.96 SE from baseline) and analyse collapse characteristics (timing, duration and magnitude). Non-uniform price collapses were observed across, and within, the markets analysed. Toyosu (Tokyo) Market experienced price collapses to 51% of commodities, Rungis (Paris) 36%, Mercamadrid (Madrid) 19%, Mercado La Nueva Viga (Mexico City) 35% and the Portland Fish Exchange (Portland, Maine) 32%. Collapse magnitude varied from 11% to 79% of the 5-year average price. Average collapse duration ranged from 13 to 24 weeks with some commodities (4%–22%) remaining collapsed at the end of 2020. For markets where volume data were available, collapses were also noted (59% of commodities in Toyosu, 10% in Mercamadrid and 19% in Portland Fish Exchange); in these cases, the volume collapse was more severe than the related price collapse. To better detect, anticipate and respond to future shocks, we recommend that relevant government agencies conduct comprehensive economic reviews of the COVID-19 pandemic throughout the seafood supply chain, including the outcomes of emergency measures, short- and long-term implications of market volatility and identify areas of supply and labour vulnerabilities.

中文翻译：

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COVID-19 期间海鲜批发价格的崩溃和恢复


COVID-19 大流行已在世界各地蔓延，扰乱了经济、社会和日常生活。早期研究预计会对全球化海鲜供应网络产生重大负面影响。在这里，我们探讨了 COVID-19 大流行对全球五个主要海鲜市场批发价格的影响。异常分析用于为每种商品建立 5 年基准价格。将 2020 年的每日价格数据与基准进行比较，以识别崩盘（相对于基准的>1.96 SE ）并分析崩盘特征（时间、持续时间和幅度）。在所分析的市场中和内部都观察到了非均匀的价格暴跌。丰洲（东京）市场的商品价格暴跌至 51%，Rungis（巴黎）暴跌 36%，Mercamadrid（马德里）暴跌 19%，Mercado La Nueva Viga（墨西哥城）暴跌 35%，波特兰鱼类交易所（缅因州波特兰）暴跌 32% 。崩盘幅度为 5 年平均价格的 11% 至 79%。平均崩盘持续时间为 13 至 24 周，部分商品 (4%–22%) 到 2020 年底仍处于崩盘状态。对于可获得成交量数据的市场，也注意到崩盘（丰洲市有 59% 的商品，日本有 10%）。 Mercamadrid 和波特兰鱼类交易所 19%）；在这些情况下，成交量暴跌比相关价格暴跌更为严重。为了更好地发现、预测和应对未来的冲击，我们建议相关政府机构对整个海鲜供应链中的COVID-19大流行进行全面的经济审查，包括紧急措施的结果、市场波动的短期和长期影响并确定供应和劳动力薄弱环节。