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Is aquaculture really an option?


  • Esther Regnier

    () (CES - Centre d'économie de la Sorbonne - CNRS - Centre National de la Recherche Scientifique - UP1 - Université Panthéon-Sorbonne, PSE - Paris School of Economics)

  • Katheline Schubert

    () (CES - Centre d'économie de la Sorbonne - CNRS - Centre National de la Recherche Scientifique - UP1 - Université Panthéon-Sorbonne, PSE - Paris School of Economics)


This article analyzes the impact of the introduction of aquaculture on wild fish stocks and consumer utility, taking into account three key components: (1) the dependence of aquaculture on reduction fisheries for the feeding of the farmed species; (2) biological interactions between the wild edible species –the predator– and the wild feed species –the prey–; (3) consumer preferences for wild and farmed fish. Fisheries are in open access while the aquaculture sector is competitive. We show that when biological interactions are moderate, the introduction of aquaculture is beneficial in the long run; it improves consumer utility and alleviates the pressure on the edible fish stock. Results are deeply modified when biological interactions are strong: the stock of edible wild fish is reduced and the introduction of aquaculture may even cause a decrease in consumer utility. Finally, we explore the consequences of an improvement in aquaculture efficiency and of a sensitivity of consumer preferences to the farmed fish diet, in the case where biological interaction are absent.

Suggested Citation

  • Esther Regnier & Katheline Schubert, 2013. "Is aquaculture really an option?," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00786112, HAL.
  • Handle: RePEc:hal:cesptp:halshs-00786112
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    References listed on IDEAS

    1. Martin F. Quaas & Till Requate, 2013. "Sushi or Fish Fingers? Seafood Diversity, Collapsing Fish Stocks, and Multispecies Fishery Management," Scandinavian Journal of Economics, Wiley Blackwell, vol. 115(2), pages 381-422, April.
    2. Kristofersson, Dadi & Anderson, James L., 2006. "Is there a relationship between fisheries and farming? Interdependence of fisheries, animal production and aquaculture," Marine Policy, Elsevier, vol. 30(6), pages 721-725, November.
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    More about this item


    biological interactions; consumer preferences; food security; aquaculture; Fisheries; interactions biologiques; sécurité alimentaire; préférences des consommateurs; Pêcheries;

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