Resumen del producto

Totoaba, is a fish endemic to the upper Gulf of California, protected since 1975. Juveniles are incidentally caught by shrimp boats, but the gillnet fishery and poaching also capture solder specimens. Therefore, the goal of this paper is to determine the current status of the totoaba stock after 45 years of prohibition of its capture. The analysis of the age structure from catch data and simulation of potential biomass reconstructing the current population carried-out. Current stock biomass is estimated in >41,000 t, as compared to 16,000 t estimated for 1933, and <2,000 t in 1945-1974, when the stock was collapsed. The number of adults estimated for 2015 exceeds 637,000 and the total stock size is >2.4 Million fish. Results suggest a population recovery, but the illegal exploitation induced by high demand, may result in booming illegal trade. Reopening the fishery is suggested to avoid an uncontrolled illegal exploitation and the risk of new collapse of the totoaba. A catch quota of 1,000 adults the first year is recommended.

Palabras clave: endangered species; Fisheries Management; Gulf of California; simulation; Stock assessment; Totoaba

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