Trial application of JABBA to Pacific saury stock assessment

JABBA (Just Another Bayesian Biomass Assessment) is an open-source software to conduct stock assessment based on Bayesian state-space surplus production model (BSSPM). This software is easy to share among the NPFC members owing to its openness and to modify its code to meet stock assessment model specification. We tried to mimic the latest stock assessment results of Pacific saury (PS) completed by the Technical Working Group on Pacific Saury Stock Assessment (TWG-PSSA) using the JABBA variant where the model specifications of the PS stock assessment were incorporated. The JABBA variant showed similar stock assessment results of the latest stock assessment. JABBA can be one of the candidates of shared stock assessment model on PS in the SSC-PS.