Resumen del producto

The stock assessment of the Temperate stock of Pacific sardine (Sardinops sagax) of the western coast of Baja California peninsula for the period from 1989 to 2018 is presented. From data of catches by age, fishing effort and independent indicators of the fishery (Egg index and biomass estimated by hydroacoustics), a statistical analysis of age capture (ACE) was applied, allowing to estimate the size of the population biomass by age groups and generate some biological reference points for its management. For the period analyzed, the total estimated biomass presented a great interannual variability ranging between 723,571 and 1,470,813 t, and an average of 983,254 t; for the year 2018, total biomass was estimated at 872,745 t and a 95% confidence interval between 758,269 t and 1,063,846 t. The spawning biomass presented a similar interannual trend, with a minimum of 396,870 t and a maximum of 866,987 t, for 2018 it was estimated at 623,360 t and a 95% confidence interval between 508,884 t and 814,462 t. The annual exploitation rate (E) ranged from 0.089 to 0.226 year-1, with an average of 0.163 year-1. The fishing mortality and the exploitation rate in the maximum sustainable yield (FMSY = 0.276 and EMSY = 0.241), which were above the values of each one of the years throughout the analyzed period. When applying the Control Rule established in the Fisheries Management Plan, under the consideration that BMIN = 52,935 t, it was found that the Temperate Stock of Pacific sardine has been exploited below the Control Rule (Biologically Acceptable Catch). Therefore, it is inferred that the Temperate Stock of S. sagax has been exploit sustainably throughout the period analyzed (1989-2018)

Palabras clave: Pacific sardine; abundance; active management; Control Rule

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