Ley de pesca chilena, rendimiento máximo sostenible y relación stock-recluta

Rodrigo Wiff, Juan C. Quiroz, Sergio Neira, Santiago Gacitúa, Mauricio A. Barrientos

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

13 Citas (Scopus)

Resumen

During 2013, the Chilean fishing law was amended to incorporate, among other change, the maximum sustainable yield (MSY) as target reference point for managing fishery resources. This mandate triggered the estimation of MSY-based reference points (RPs) in each fishery subject to catch limits in Chile. Recent investigations indicate that production models provide MSY-based RPs, which are predicted only by using the steepness of the stock-recruitment relationship (h). In this paper, we compare predicted MSY-based RPs using production models with estimates from an age-structured per-recruit model for eleven demersal stocks harvested in Chile. The MSY-based RPs assessed were: 1) The ratio between the biomass leading to MSY to the unfished biomass (Formula presented) the ratio between the fishing mortality that gives the MSY and natural mortality (Formula presented) the ratio of spawning biomass per recruit (SR) when the population is fished at Fmsy to the spawning biomass per recruit of an unfished population (Formula presented). The production model provides (Formula presented) and SPRmsy that well predicted estimates from the age-structured models in most of the species analyzed. However, (Formula presented) was overestimated by the production model in most of the stocks. We discuss the dependence of h with the MSY-based RPs in light of the Chilean fishing law. This paper reveals the complexity of implementing the Chilean Fishing Law into real situations and the uncertainty surrounding the estimation of h and, by extension, MSY and MSY-based RPs.

Título traducido de la contribuciónChilean fishing law, maximum sustainable yield, and the stock-recruitment relationship
Idioma originalEspañol
Páginas (desde-hasta)380-391
Número de páginas12
PublicaciónLatin American Journal of Aquatic Research
Volumen44
N.º2
DOI
EstadoPublicada - may. 2016
Publicado de forma externa

Palabras clave

  • Chilean fisheries
  • Demersal fish stocks
  • Fisheries management
  • MSY
  • Steepness
  • Stock-recruitment function

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