Standardization of CPUE data of Pacific saury (Cololabis saira) caught by the Chinese stick-held dip net fishery

China’s Pacific saury fishery began in 2003. Most of the Pacific saury catch is harvested by the stick-held dip net fishery. In this paper, we standardized catch per unit fishing effort (CPUE) using Generalized linear model (GLM) and generalized additive model (GAM). Four groups of independent variables were considered in the standardization: spatial variables (latitude and longitude), temporal variables (year and month), vessel length and environmental variables (SST, SSTG, SSH, and Lunar day). Log-CPUE was treated as the dependent variable and its error distribution was assumed to follow normal distribution in each model. The model selections of GLM and GAM were based on the Akaike Information Criteria (AIC). The standardized CPUEs by GAM were lower than nominal CPUEs throughout the time period. The standardized CPUEs by GLM were lower than nominal CPUEs during 2003-2004 and 2010-2016.