Análisis bioeconómico del cultivo de dorada en Canarias y en el Mediterráneo

Eucario Gasca-Leyva, Carmelo León, Juan María Hernández, José Manuel Vergara

Abstract

Aquaculture is an expanding industry, which represents an altemative to the limited fishing resources. This paper develops a bioeconomic model for the production of gilthead seabream, a species with large market potential. The model is based on a biological growth submodel, where fish growth is related to fish weight, ration size, and temperature. Random factors are introduced through the functions for temperatura and market price. A dynamic system methodology is utilised for analysing the temporal evolution of the biological and economic relationships. Since plant localisation is determined by environmental factors, and therefore has an influence on firm retums, the model is utilised for evaluating the impact of two altemative scenarios: the Mediterranean and the Canary Islands. As a main conclusion, it is obtained that competitiveness in the Canaries depends on the production of 750g. extralarge size, which is not profitable in the Mediterranean sea due to large costs. The results also show increasing retums to scale, and the efficient plant capacity for the representative firm.


Keywords

Aquaculture; bioeconomics; dynamic systems; gilthead seabream; localisation

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 Universitat Politècnica de València

e-ISSN: 2174-7350   ISSN: 1578-0732   https://doi.org/10.4995/earn