Abstract

Despite recent dramatic growth in seafood consumption worldwide, knowledge about seafood demand is limited relative to other protein sources. We model demand across three major protein categories (i.e., terrestrial meat, seafood, and plant-based protein) in South Korea to fill the research gap. This study models a quadratic almost ideal demand system (QUAIDS) by utilizing household panel data. The study takes this one step further by modeling demand within four seafood categories (i.e., fish, cephalopods, shellfish, and crustaceans). Sociodemographic variables, including health-related factors, are incorporated into the demand models. Results indicate that seafood is in a complementary relationship with terrestrial meat while it is a substitute for plant-based protein. All four seafood categories are a substitute for each other. The results reveal that people who take their health seriously tend to consume more seafood, particularly fish. The results have economic and marketing implications for which strategies could be adopted to influence seafood consumption.

摘要

尽管最近全球海产品消费量急剧增长，但相对于其他蛋白质来源，对海产品需求的了解仍然有限。我们对韩国三大蛋白质类别（即陆生肉类、海鲜和植物性蛋白质）的需求进行建模，以填补研究空白​​。本研究利用家庭面板数据对二次近似理想需求系统 (QUAIDS) 进行建模。该研究通过对四种海产品类别（即鱼类、头足类、贝类和甲壳类）的需求进行建模，进一步推进了这一步骤。社会人口变量，包括与健康相关的因素，被纳入需求模型。结果表明，海鲜与陆生肉类具有互补关系，同时它是植物性蛋白质的替代品。所有四种海鲜类别都可以相互替代。结果显示，认真对待自己健康的人往往会吃更多的海鲜，尤其是鱼。结果具有经济和营销意义，可以采用哪些策略来影响海鲜消费。