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Pouvoir de marché dans la filière cacao : l'hypothèse de Prébish et Singer revisitée

Author

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  • Catherine Araujo Bonjean

    (CERDI - Centre d'Études et de Recherches sur le Développement International - UdA - Université d'Auvergne - Clermont-Ferrand I - CNRS - Centre National de la Recherche Scientifique)

  • Jean-François Brun

    (CERDI - Centre d'Études et de Recherches sur le Développement International - UdA - Université d'Auvergne - Clermont-Ferrand I - CNRS - Centre National de la Recherche Scientifique)

Abstract

Ce travail s'inscrit dans le prolongement des travaux de Prebisch et Singer sur la dégradation des termes de l'échange des pays en développement. Un modèle de théorie des jeux visant à expliquer la détérioration du prix de la fève de cacao par rapport à celui de la tablette de chocolat observée sur le marché français, est proposé. Une implication du modèle est que les prix de la matière première et du produit fini dépendent du pouvoir de marché respectif du principal producteur mondial, la Côte d'Ivoire, et des industriels du cacao. Il en découle un système d'équations permettant de tester le pouvoir de marché de la Côte et des industriels. Les résultats économétriques amènent à distinguer deux régimes de formation des prix. Dans la période 1960 – 1985, la Côte d'Ivoire joue un rôle dominant. Elle perd ensuite progressivement son pouvoir de marché au profit des transformateurs.

Suggested Citation

  • Catherine Araujo Bonjean & Jean-François Brun, 2008. "Pouvoir de marché dans la filière cacao : l'hypothèse de Prébish et Singer revisitée," Post-Print hal-00360164, HAL.
    • Handle: RePEc:hal:journl:hal-00360164
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    Cited by:

    1. Coulibaly, Adama & Dembele, Ardjouma & Biego, Henri Marius Godi & Silue, Nahoule & Toure, A. Abba, 2012. "Evolution of the Merchantability and the Level of Ochratoxin A of Ivorian Cocoa Beans from Production Areas during the Harvest Season," Sustainable Agriculture Research, Canadian Center of Science and Education, vol. 1(2).
    2. Catherine Araujo Bonjean & Jean-François Brun, 2014. "Chocolate price fluctuations may cause depression: an analysis of price pass-through in the cocoa chain," CERDI Working papers halshs-01074157, HAL.

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