1. Meetings
  2. Scientific Committee (SC) Meetings
  3. Technical Working Group on Chub Mackerel Stock Assessment (TWG CMSA)
  4. 4th Meeting of the Technical Working Group on Chub Mackerel Stock Assessment

4th Meeting of the Technical Working Group on Chub Mackerel Stock Assessment

    Location
    Virtual
    Short Name
    TWG CMSA04
    Date
    -
    Registration Due
    Meeting Papers Due
    Meeting Information File
    NPFC-2021-TWG CMSA04-MIP01 Meeting Information.pdf247.65 KB
    Meeting Report File for Public
    TWG CMSA04 report.pdf507.6 KB
    1 Opening of the Meeting
    2 Adoption of Agenda
    3 Overview of the recommendations and outcomes of previous NPFC meetings relevant to chub mackerel
     
    3.1 3rd TWG CMSA and 5th SC meeting
     
    3.2 6th Commission meeting
     
    3.3 Intersessional meetings of SWG OM
    4 Toward development of Management Strategy Evaluation (MSE)
     
    4.1 Update on intersessional work towards MSE
     
    4.2 Recommendations and timelines for future work
    5 Review of Terms of Reference and Protocols of the TWG CMSA
     
    5.1 Terms of Reference
     
    5.2 CPUE Standardization Protocol
     
    5.3 Stock Assessment Protocol
     
    5.4 Protocol for the Operating Model Development
    6 Member’s fisheries information and research activities
     
    6.1 Description of fisheries, inter alia, fishing seasons and fishing grounds
     
    6.2 Research activities
    7 Development of the operating model for the stock assessment of chub mackerel
     
    7.1 Review of key considerations and specifications from the TWG CMSA03 meeting
     
    7.2 Review of updated stock assessment results (VPA, ASAP, KAFKA, SAM)
     
    7.3 Review of assumptions and parameters from the stock assessment models
     
    7.4 Review of major sources of uncertainty to be included in the operating model
     
    7.5 Review of scenarios for the operating model
     
    7.6 Review of the rules for prioritization of the performance measures
     
    7.7 Technical aspects of using POPSIM-A as an operating model for testing chub mackerel stock assessment models
     
    7.8 Finalization of specification of the operating model for testing chub mackerel stock assessment models
     
    7.9 Recommendations and timelines for future work
    8 Development of data for the stock assessment of chub mackerel
     
    8.1 Data inventory (catch, size, abundance indices, etc.) and updates
     
    8.2 Standardized fishery-dependent/independent indices
     
    8.3 Biological information
     
    8.4 Observer Program
     
    8.5 Recommendations for future work
    9 Review of the Work Plan of the TWG CMSA
    10 Other matters
     
    10.1 Next TWG CMSA meetings
     
    10.2 Other issues
    11 Recommendations to the Scientific Committee
    12 Adoption of Report
    13 Close of the Meeting
    No documents listed
    NPFC-2021-TWG CMSA04-MIP02
    		Provisional Agenda NPFC-2021-TWG CMSA04-MIP02 Provisional Agenda.pdf214.03 KB
    NPFC-2021-TWG CMSA04-MIP03 (Rev. 1)
    		Annotated Indicative Schedule NPFC-2021-TWG CMSA04-MIP03(Rev 1) Annotated Indicative Schedule.pdf309.61 KB
    No documents listed
    3.1 3rd TWG CMSA and 5th SC meeting
    No documents listed
    3.2 6th Commission meeting
    No documents listed
    3.3 Intersessional meetings of SWG OM
    No documents listed
    No documents listed
    4.1 Update on intersessional work towards MSE
    No documents listed
    4.2 Recommendations and timelines for future work
    No documents listed
    No documents listed
    5.1 Terms of Reference
    No documents listed
    5.2 CPUE Standardization Protocol
    No documents listed
    5.3 Stock Assessment Protocol
    No documents listed
    5.4 Protocol for the Operating Model Development
    No documents listed
    NPFC-2021-TWG CMSA04-WP18
    		Review of chub mackerel fishery in China and research activities NPFC-2021-TWG CMSA04-WP18 Review of chub mackerel fishery in China.pdf1.48 MB
    6.1 Description of fisheries, inter alia, fishing seasons and fishing grounds
    NPFC-2021-TWG CMSA04-WP02
    		Description on Japanese chub mackerel fisheries with emphasis on those seasonality and fishing grounds NPFC-2021-TWG CMSA04-WP02 Fishery Description_Japan.pdf1.83 MB
    NPFC-2021-TWG CMSA04-WP10
    		Stock and fishing of chub mackerel (Scomber japonicus) by Russian vessels in 2020 NPFC-2021-TWG CMSA04-WP10 Stock and fishing of chub mackerel in 2020_Russia.pdf3.66 MB
    NPFC-2021-TWG CMSA04-WP15
    		Monthly catch data and the maps and description of China’ fishing grounds NPFC-2021-TWG CMSA04-WP15 Monthly catch data and maps of chub mackerel_China.pdf617.7 KB
    6.2 Research activities
    No documents listed
    No documents listed
    7.1 Review of key considerations and specifications from the TWG CMSA03 meeting
    NPFC-2021-TWG CMSA04-WP05
    		Update on natural mortality estimators for chub mackerel in the Northwest Pacific Ocean NPFC-2021-TWG CMSA04-WP05 Updated natural mortality_Japan.pdf1.03 MB
    7.2 Review of updated stock assessment results (VPA, ASAP, KAFKA, SAM)
    NPFC-2021-TWG CMSA04-WP01
    		Update stock assessment based on ASAP (age-structured assessment program) for Chub mackerel in the North Pacific Ocean NPFC-2021-TWG CMSA04-WP01 Updated ASAP stock assessment_China.pdf882.4 KB
    NPFC-2021-TWG CMSA04-WP08
    		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 VPA and SAM stock assessments_Japan.pdf6.01 MB
    NPFC-2021-TWG CMSA04-WP09
    		Preliminary chub mackerel stock assessment using KAFKA model NPFC-2021-TWG CMSA04-WP09 KAFKA stock assessments_Russia.pdf291.1 KB
    7.3 Review of assumptions and parameters from the stock assessment models
    No documents listed
    7.4 Review of major sources of uncertainty to be included in the operating model
    No documents listed
    7.5 Review of scenarios for the operating model
    No documents listed
    7.6 Review of the rules for prioritization of the performance measures
    NPFC-2021-TWG CMSA04-WP14
    		Candidate Performance Measures for testing Chub Mackerel Stock Assessment Models NPFC-2021-TWG CMSA04-WP14 Performance Measures.docx179.34 KB
    7.7 Technical aspects of using POPSIM-A as an operating model for testing chub mackerel stock assessment models
    POPSIM-A as an operating model for testing North Pacific chub mackerel stock assessment models POPSIM-A chub mackerel-4.pdf3.03 MB
    7.8 Finalization of specification of the operating model for testing chub mackerel stock assessment models
    No documents listed
    7.9 Recommendations and timelines for future work
    No documents listed
    No documents listed
    8.1 Data inventory (catch, size, abundance indices, etc.) and updates
    NPFC-2021-TWG CMSA04-WP11
    		Catch and weight at age of chub mackerel in Russia NPFC-2021-TWG CMSA04-WP11 Chub mackerel catch and weight at age_Russia.pdf827.8 KB
    NPFC-2021-TWG CMSA04-WP16
    		Content of the document for data on biological information on the chub mackerel NPFC-2021-TWG CMSA04-WP16 Content of document for data on biological information_Chn.pdf856.99 KB
    8.2 Standardized fishery-dependent/independent indices
    NPFC-2021-TWG CMSA04-WP03
    		Standardizing CPUE of Japanese commercial dip-net fishery targeting spawners of chub mackerel in the Northwest Pacific NPFC-2021-TWG CMSA04-WP03 Standardized CPUE_SSB_dipnet_Japan.pdf1.15 MB
    NPFC-2021-TWG CMSA04-WP04
    		Standardizing monthly egg survey data as an abundance index for spawning stock biomass of chub mackerel in the Northwest Pacific NPFC-2021-TWG CMSA04-WP04 Egg Survey_Japan.pdf1.62 MB
    NPFC-2021-TWG CMSA04-WP06
    		Standardizing abundance index for recruitment of chub mackerel in the Northwest Pacific NPFC-2021-TWG CMSA04-WP06 Recruitment Index_Japan.pdf3.06 MB
    NPFC-2021-TWG CMSA04-WP17
    		Standardized CPUE of Chub mackerel (Scomber japonicas) caught by the China’s lighting purse seine fishery up to 2019 NPFC-2021-TWG CMSA04-WP17 Standardized CPUE of chub mackerel_China.pdf941.48 KB
    8.3 Biological information
    NPFC-2021-TWG CMSA04-WP07
    		Maturity at age of chub mackerels under different stock level in the northwestern Pacific Ocean
    8.4 Observer Program
    NPFC-2021-TWG CMSA04-WP13 (Rev. 1)
    		Members’ views on an observer program for chub mackerel NPFC-2021-TWG CMSA04-WP13(Rev 1) Members views on an observer program for chub mackerel.docx254.29 KB
    8.5 Recommendations for future work
    No documents listed
    NPFC-2021-TWG CMSA04-WP12 (Rev. 2)
    		TWG CMSA Work Plan, 2021-2025 NPFC-2021-TWG CMSA04-WP12(Rev 2) TWG CMSA Work Plan.docx439.82 KB
    No documents listed
    10.1 Next TWG CMSA meetings
    No documents listed
    10.2 Other issues
    No documents listed
    No documents listed
    No documents listed
    No documents listed
    Document Number Title File Created
    NPFC-2021-TWG CMSA04-MIP02 Provisional Agenda NPFC-2021-TWG CMSA04-MIP02 Provisional Agenda.pdf214.03 KB
    NPFC-2021-TWG CMSA04-MIP03 (Rev. 1) Annotated Indicative Schedule NPFC-2021-TWG CMSA04-MIP03(Rev 1) Annotated Indicative Schedule.pdf309.61 KB
    NPFC-2021-TWG CMSA04-WP01 Update stock assessment based on ASAP (age-structured assessment program) for Chub mackerel in the North Pacific Ocean NPFC-2021-TWG CMSA04-WP01 Updated ASAP stock assessment_China.pdf882.4 KB
    NPFC-2021-TWG CMSA04-WP02 Description on Japanese chub mackerel fisheries with emphasis on those seasonality and fishing grounds NPFC-2021-TWG CMSA04-WP02 Fishery Description_Japan.pdf1.83 MB
    NPFC-2021-TWG CMSA04-WP03 Standardizing CPUE of Japanese commercial dip-net fishery targeting spawners of chub mackerel in the Northwest Pacific NPFC-2021-TWG CMSA04-WP03 Standardized CPUE_SSB_dipnet_Japan.pdf1.15 MB
    NPFC-2021-TWG CMSA04-WP04 Standardizing monthly egg survey data as an abundance index for spawning stock biomass of chub mackerel in the Northwest Pacific NPFC-2021-TWG CMSA04-WP04 Egg Survey_Japan.pdf1.62 MB
    NPFC-2021-TWG CMSA04-WP05 Update on natural mortality estimators for chub mackerel in the Northwest Pacific Ocean NPFC-2021-TWG CMSA04-WP05 Updated natural mortality_Japan.pdf1.03 MB
    NPFC-2021-TWG CMSA04-WP06 Standardizing abundance index for recruitment of chub mackerel in the Northwest Pacific NPFC-2021-TWG CMSA04-WP06 Recruitment Index_Japan.pdf3.06 MB
    NPFC-2021-TWG CMSA04-WP07 Maturity at age of chub mackerels under different stock level in the northwestern Pacific Ocean
    NPFC-2021-TWG CMSA04-WP08 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 VPA and SAM stock assessments_Japan.pdf6.01 MB
    NPFC-2021-TWG CMSA04-WP09 Preliminary chub mackerel stock assessment using KAFKA model NPFC-2021-TWG CMSA04-WP09 KAFKA stock assessments_Russia.pdf291.1 KB
    NPFC-2021-TWG CMSA04-WP10 Stock and fishing of chub mackerel (Scomber japonicus) by Russian vessels in 2020 NPFC-2021-TWG CMSA04-WP10 Stock and fishing of chub mackerel in 2020_Russia.pdf3.66 MB
    NPFC-2021-TWG CMSA04-WP11 Catch and weight at age of chub mackerel in Russia NPFC-2021-TWG CMSA04-WP11 Chub mackerel catch and weight at age_Russia.pdf827.8 KB
    NPFC-2021-TWG CMSA04-WP12 (Rev. 2) TWG CMSA Work Plan, 2021-2025 NPFC-2021-TWG CMSA04-WP12(Rev 2) TWG CMSA Work Plan.docx439.82 KB
    NPFC-2021-TWG CMSA04-WP13 (Rev. 1) Members’ views on an observer program for chub mackerel NPFC-2021-TWG CMSA04-WP13(Rev 1) Members views on an observer program for chub mackerel.docx254.29 KB
    NPFC-2021-TWG CMSA04-WP14 Candidate Performance Measures for testing Chub Mackerel Stock Assessment Models NPFC-2021-TWG CMSA04-WP14 Performance Measures.docx179.34 KB
    NPFC-2021-TWG CMSA04-WP15 Monthly catch data and the maps and description of China’ fishing grounds NPFC-2021-TWG CMSA04-WP15 Monthly catch data and maps of chub mackerel_China.pdf617.7 KB
    NPFC-2021-TWG CMSA04-WP16 Content of the document for data on biological information on the chub mackerel NPFC-2021-TWG CMSA04-WP16 Content of document for data on biological information_Chn.pdf856.99 KB
    NPFC-2021-TWG CMSA04-WP17 Standardized CPUE of Chub mackerel (Scomber japonicas) caught by the China’s lighting purse seine fishery up to 2019 NPFC-2021-TWG CMSA04-WP17 Standardized CPUE of chub mackerel_China.pdf941.48 KB
    NPFC-2021-TWG CMSA04-WP18 Review of chub mackerel fishery in China and research activities NPFC-2021-TWG CMSA04-WP18 Review of chub mackerel fishery in China.pdf1.48 MB
    POPSIM-A as an operating model for testing North Pacific chub mackerel stock assessment models POPSIM-A chub mackerel-4.pdf3.03 MB