Title Agenda Sub-Group Document Number Authors File Update stock assessment based on ASAP (age-structured assessment program) for Chub mackerel in the North Pacific Ocean NPFC-2021-TWG CMSA04-WP01 Qiuyun Ma, Kai Cai, Siquan Tian, Libin Dai CHINA NPFC-2021-TWG CMSA04-WP01 Updated ASAP stock assessment_China.pdf Re-analysis of Virtual Population Analysis and State-Space Assessment Model for Operating Models of Chub Mackerel Stock Assessment in NPFC NPFC-2021-TWG CMSA04-WP08 Shota Nishijima, Ryuji Yukami, Kazuhiro Oshima, and Momoko Ichinokawa JAPAN NPFC-2021-TWG CMSA04-WP08 VPA and SAM stock assessments_Japan.pdf Preliminary chub mackerel stock assessment using KAFKA model NPFC-2021-TWG CMSA04-WP09 RUSSIA NPFC-2021-TWG CMSA04-WP09 KAFKA stock assessments_Russia.pdf