Standardized CPUE for Chub mackerel (Scomber japonicus) caught by Russian pelagic trawl fishery in 2015-2021

Standardization of chub mackerel (Scomber japonicus) trawl catches in Russian Federation waters has been conducted based on 2015-2021 fisheries statistics. Production and natural factors were used as predictors. To analyze the influence, generalized additive models (GAM) were used. The choice of the best model was made using the AIC and BIG information criteria. The selected model includes coordinates, day of the year, vessel length, engine power, number of fishing vessels and SST. Interpretation for the influence of considered factors on catch per effort is given.