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Supply and Demand Analysis for Mussels in the Eu Market

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  • This study analyzes supply and demand system for the mussels in the EU markets. The results show that farmed and wild quantity of two main species of mussels, Mytilus edulis and Mytilus galloprovincialis, have declined in recent years due to limits of seed and space. However, a demand system analysis proves that the decrease will raise price of the products in the EU market. Inverse Almost Ideal Demand System (IAIDS) is applied for farmed and wild mussels show the two products are inelastic and less competitive. Own quantity flexibilities of farmed and wild mussels are -0.98 and -0.83, while scale flexibilities are -1.1 and -0.86, respectively. Wild mussels have low quality and are usually sold in frozen forms, while farmed mussels has higher quality and are supplied mainly in fresh forms. The quality difference explains why cross-quantity flexibilities of farmed and wild products are marginal at -0.13 and -0.023, respectively. The demand system with month-dummy variables satisfies all restrictions of adding-up, homogeneity, symmetry, and explains for 89% the variance (R2). Method of maximum likelihood estimation also shows that non-linear form is more appropriate for time series data in the study than a linear equation.
  • Keywords: Fisheries Economics, Price Determination, Markets and Trade
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  • Nguyen, Thong Tien. 2010. Supply and Demand Analysis for Mussels in the Eu Market. In: Proceedings of the Fifteenth Biennial Conference of the International Institute of Fisheries Economics & Trade, July 13-16, 2010, Montpellier, France: Economics of Fish Resources and Aquatic Ecosystems: Balancing Uses, Balancing Costs. Compiled by Ann L. Shriver. International Institute of Fisheries Economics & Trade, Corvallis, Oregon, USA, 2010.
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  • US National Oceanic and Atmospheric Administration (NOAA) Fisheries Division, Agence Française de Développement, Ministère de l’Enseignement Supérieur et de la Recherche, Ministère de L’Alimentation de L’Agriculture et de la Pêche, Ministère de l’Énergie, du Développement Durable et de la Mer, La Région Languedoc Rouslilon, Département Hérault, Montpellier Agglomèration, The Department of Fisheries and Oceans, Canada, and AquaFish Collaborative Research Support Program (CRSP).
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