1. Meetings
  2. Scientific Committee (SC) Meetings
  3. Technical Working Group on Chub Mackerel Stock Assessment (TWG CMSA)
  4. 8th TWG CMSA meeting

8th TWG CMSA meeting

    Location
    Niigata, Japan
    Short Name
    TWG CMSA08
    Date
    -
    Registration Due
    Meeting Papers Due
    Meeting Information File
    NPFC-2024-SWG MSE PS05-MIP01(Rev 2) Meeting Information_0.pdf
    Meeting Report File for Public
    TWG CMSA08 Report.pdf
    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 TWG CMSA07
     
    3.2 Intersessional meetings of TWG CMSA
     
    3.3 SC08
    4. Members fishery status and research activities, inter alia in 2023
    5. Biological information
     
    5.1 Weight-length relationships
     
    5.2 Natural mortalities
     
    5.3 Maturity-at-age
     
    5.4 Finalization of biological parameters for stock assessment in TWG CMSA09
    6. Fishery and biological data for stock assessment
     
    6.1 Catch-at-age
     
     
    6.1.1 Length frequency, catch-at-length/size and age-length key
     
     
    6.1.2 Calculation of catch-at-age
     
    6.2 Weight-at-age
     
    6.3 Finalization of fishery and biological data for stock assessment in TWG CMSA09
    7. Abundance indices
     
    7.1 Finalization of CPUE document template
     
    7.2 Update of abundance indices submitted by Members
     
    7.3 Finalization of abundance indices for stock assessment in TWG CMSA09
    8. Settings and specifications of SAM
     
    8.1 Review of current settings and specifications
     
    8.2 Review of preliminary results from SAM
     
    8.3 Discussion towards finalization of settings and specifications
    9. Biological reference points
     
    9.1 Methods to calculate biological reference points
    10. Future projection of chub mackerel
     
    10.1 Methods to conduct future projection
    11. Review of the Work Plan of the TWG CMSA
    12. Other matters
     
    12.1 Timeline and intersessional activities before TWG CMSA09
     
    12.2 Observer Program
     
     
    12.2.1 Review data or data description on fisheries bycatch in the chub mackerel fisheries
     
    12.3 Species summary
     
    12.4 Space and methods to share data and codes
     
    12.5 Other issues
    13. Recommendations to the Scientific Committee
    14. Adoption of Report
    15. Close of the Meeting
    No documents listed
    NPFC-2024-TWG CMSA08-MIP02
    		Provisional Agenda NPFC-2024-TWG CMSA08-MIP02 Provisional Agenda_0.pdf
    NPFC-2024-TWG CMSA08-MIP03 (Rev. 1)
    		Annotated Indicative Schedule NPFC-2024-TWG CMSA08-MIP03(Rev 1) Annotated Indicative Schedule_0.pdf
    No documents listed
    3.1 TWG CMSA07
    NPFC-2023-TWG CMSA07-Final Report
    		7th TWG CMSA meeting report (click for LINK)
    3.2 Intersessional meetings of TWG CMSA
    NPFC-2024-TWG CMSA08-RP01
    		Summary of the 3rd Intersessional Meeting of the Technical Working Group on Chub Mackerel Stock Assessment NPFC-2024-TWG CMSA08-RP01 3rd int TWG CMSA meeting summary.pdf
    3.3 SC08
    NPFC-2023-SC08-Draft Report
    		SC08 Draft Report SC08 Report_0.pdf
    NPFC-2024-TWG CMSA08-IP02
    		Chub mackerel Russian fishery in the northwest Pacific Ocean Pacific Ocean, research activities in 2023 NPFC-2024-TWG CMSA08-IP02 CM fishery in NWPO and research activities_Rus.docx
    NPFC-2024-TWG CMSA08-IP03
    		Abundance and Distribution Estimation for Chub Mackerel and Blue mackerel in the Northwest Pacific Based on Scientific Research Surveys NPFC-2024-TWG CMSA08-IP03 Abundance and Distribution of CM and BM_Chn.pdf
    NPFC-2024-TWG CMSA08-IP04
    		Review of chub mackerel fishery in China and research activities NPFC-2024-TWG CMSA08-IP04 Review of chub mackerel fishery in China in 2023.pdf
    NPFC-2024-TWG CMSA08-IP05
    		Recent fishery and stock status of chub mackerel from Japan NPFC-2024-TWG CMSA08-IP05 Fishery and stock status_JPN.pdf
    NPFC-2023-SC08-IP13(Rev 1)
    		Biological Data Provision Template NPFC-2023-SC08-IP13(Rev 1) BiologicalDataProvisionTemplate_Age_0.xlsx, NPFC-2023-SC08-IP13(Rev 1) BiologicalDataProvisionTemplate_ALK_0.xlsx, NPFC-2023-SC08-IP13(Rev 1) BiologicalDataProvisionTemplate_Length_0.xlsx, NPFC-2023-SC08-IP13(Rev 1) BiologicalDataProvisionTemplate_MaturityOgiveAge_0.xlsx
    NPFC-2024-TWG CMSA08-WP12
    		Growth and Mortality Estimation for Chub Mackerel based on Chinese data in the Convention Area of NPFC NPFC-2024-TWG CMSA08-WP12 Growth and Mortality of CM in high sea_Chn.docx
    5.1 Weight-length relationships
    NPFC-2024-TWG CMSA08-WP13
    		Length-weight relationship and weight at age of chub mackerel Scomber japonicus caught in the northwestern Pacific Ocean by China, Japan, and Russia NPFC-2024-TWG CMSA08-WP13 Length-weight relationship and weight at age.docx, NPFC2024TWG_CMSA8_WP13_LW_relationship.pdf
    5.2 Natural mortalities
    NPFC-2024-TWG CMSA08-IP06
    		Update on natural mortality estimators for chub mackerel in the Northwest Pacific Ocean NPFC-2024-TWG CMSA08-IP06 UpdatedM_Jpn.pdf
    5.3 Maturity-at-age
    NPFC-2024-TWG CMSA08-WP14
    		Maturity at age of chub mackerel Scomber japonicus caught in the northwestern Pacific Ocean by China and Japan NPFC-2024-TWG CMSA08-WP14 Maturity at age.docx, NPFC2024TWGCMSA8_WP14_MAA.pdf
    NPFC-2024-TWG CMSA08-IP07
    		Spawning of chub mackerel (Scomber japonicus) in the northwestern Pacific
    5.4 Finalization of biological parameters for stock assessment in TWG CMSA09
    No documents listed
    NPFC-2024-TWG CMSA08-WP11
    		Quarterly catches and average weights by age groups NPFC-2024-TWG CMSA08-WP11 Quarterly catches and average weights by age groups_Rus.docx
    6.1 Catch-at-age
    NPFC-2024-TWG CMSA-WP15
    		Catch at length, age length key, and catch at age of chub mackerels Scomber japonicus caught in the northwestern Pacific Ocean by China, Japan, and Russia NPFC-2024-TWG CMSA08-WP15 Catch at length_age length key_catch at age.docx, NPFC2024TWGCMSA8_WP15_CAA.pdf, NPFC2024TWGCMSA8_WP15_CAA_scenarios.pdf
    6.1.1 Length frequency, catch-at-length/size and age-length key
    No documents listed
    6.1.2 Calculation of catch-at-age
    No documents listed
    6.2 Weight-at-age
    No documents listed
    6.3 Finalization of fishery and biological data for stock assessment in TWG CMSA09
    No documents listed
    No documents listed
    7.1 Finalization of CPUE document template
    NPFC-2024-TWG CMSA08-WP04 (Rev. 1)
    		CPUE Standardization Protocol for Chub Mackerel NPFC-2024-TWG CMSA08-WP04(Rev 1) CPUE Standardization Protocol for Chub Mackerel.docx
    7.2 Update of abundance indices submitted by Members
    NPFC-2024-TWG CMSA08-WP03
    		Standardized CPUE of Japanese commercial dip-net fishery targeting spawners of chub mackerel in the Northwest Pacific up to 2023 NPFC-2024-TWG CMSA08-WP03 CPUE_standardization_dipnet_Jpn.pdf, Standardized_Index_dipnet_jpn.pdf
    NPFC-2024-TWG CMSA08-WP06 (Rev. 1)
    		Standardized abundance index for recruitment of chub mackerel from Northwest Pacific summer surveys up to 2023 NPFC-2024-TWG CMSA08-WP06(Rev 1) CPUE_standardization_summer_jpn_ver5.docx, Standardized_Index_summer_jpn_ver2.pdf
    NPFC-2024-TWG CMSA08-WP05 (Rev. 1)
    		Standardizing monthly egg survey data as an abundance index for spawning stock biomass of chub mackerel in the Northwest Pacific NPFC-2024-TWG CMSA08-WP05(Rev 1) EggSurvey_Jpn.pdf
    NPFC-2024-TWG CMSA08-WP07 (Rev. 1)
    		Standardized CPUE of Chub mackerel (Scomber japonicus) caught by the China’s lighting purse seine fishery up to 2022 NPFC-2024-TWG CMSA08-WP07(Rev 1) Standardized CPUE of CM up to 2022_CHN.pdf
    NPFC-2024-TWG CMSA08-WP08 (Rev. 1)
    		Standardized Abundance Indices for Ages 0 and 1 Fish of Chub Mackerel from Northwest Pacific Autumn Surveys up to 2023 NPFC-2024-TWG CMSA08-WP08(Rev 1) CPUE_standardization_autumn_Jpn.docx, Standardized_Indices_autumn_jpn_ver2.pdf
    NPFC-2024-TWG CMSA08-WP09
    		Chub mackerel abundance indices in the North-Western Pacific Ocean based on the results of stocks surveys carried out by Russian research vessels in 2014-2023 NPFC-2024-TWG CMSA08-WP09 CM abundance indices in NWPO surveys 2014-2023_Rus.docx
    7.3 Finalization of abundance indices for stock assessment in TWG CMSA09
    No documents listed
    No documents listed
    8.1 Review of current settings and specifications
    NPFC-2023-TWG CMSA07-WP07 (Rev. 1)
    		On the description and flexibility of state-space assessment model NPFC-2023-TWG CMSA07-WP07(Rev 1) sam_guidance_Jpn_with_additional_equation.pdf
    8.2 Review of preliminary results from SAM
    No documents listed
    8.3 Discussion towards finalization of settings and specifications
    No documents listed
    No documents listed
    9.1 Methods to calculate biological reference points
    No documents listed
    No documents listed
    10.1 Methods to conduct future projection
    No documents listed
    NPFC-2024-TWG CMSA08-WP01 (Rev. 1)
    		TWG CMSA Work Plan, 2023-2027 NPFC-2024-TWG CMSA08-WP01(Rev 1) TWG CMSA Work Plan.docx
    NPFC-2023-SC08-WP04 (Rev. 2)
    		Performance Review recommendations_SC08 NPFC-2023-SC08-WP04(Rev 2) Performance Review recommendations_SC08.xlsx
    No documents listed
    12.1 Timeline and intersessional activities before TWG CMSA09
    No documents listed
    12.2 Observer Program
    No documents listed
    12.2.1 Review data or data description on fisheries bycatch in the chub mackerel fisheries
    NPFC-2024-TWG CMSA08-IP08
    		By-catch data from Japanese mackerel fisheries in the Northwest Pacific NPFC-2024-TWG CMSA08-IP08 By-catch data from mackerel fisheries in NWPO_Rus.pdf
    12.3 Species summary
    NPFC-2024-TWG CMSA08-WP02
    		Species summary for chub mackerel NPFC-2024-TWG CMSA08-WP02 Species summary for chub mackerel.pdf
    12.4 Space and methods to share data and codes
    NPFC-2024-TWG CMSA08-IP01
    		Report on GIT Repository Plan for TWG CMSA NPFC-2024-TWG CMSA08-IP01 GIT Plan.pdf
    12.5 Other issues
    No documents listed
    No documents listed
    No documents listed
    No documents listed
    Document Number Title File Created
    NPFC-2024-TWG CMSA08-MIP02 Provisional Agenda NPFC-2024-TWG CMSA08-MIP02 Provisional Agenda_0.pdf
    NPFC-2024-TWG CMSA08-MIP03 (Rev. 1) Annotated Indicative Schedule NPFC-2024-TWG CMSA08-MIP03(Rev 1) Annotated Indicative Schedule_0.pdf
    NPFC-2024-TWG CMSA08-WP01 (Rev. 1) TWG CMSA Work Plan, 2023-2027 NPFC-2024-TWG CMSA08-WP01(Rev 1) TWG CMSA Work Plan.docx
    NPFC-2024-TWG CMSA08-WP02 Species summary for chub mackerel NPFC-2024-TWG CMSA08-WP02 Species summary for chub mackerel.pdf
    NPFC-2024-TWG CMSA08-WP03 Standardized CPUE of Japanese commercial dip-net fishery targeting spawners of chub mackerel in the Northwest Pacific up to 2023 NPFC-2024-TWG CMSA08-WP03 CPUE_standardization_dipnet_Jpn.pdf, Standardized_Index_dipnet_jpn.pdf
    NPFC-2024-TWG CMSA08-WP04 (Rev. 1) CPUE Standardization Protocol for Chub Mackerel NPFC-2024-TWG CMSA08-WP04(Rev 1) CPUE Standardization Protocol for Chub Mackerel.docx
    NPFC-2023-SC08-WP04 (Rev. 2) Performance Review recommendations_SC08 NPFC-2023-SC08-WP04(Rev 2) Performance Review recommendations_SC08.xlsx
    NPFC-2024-TWG CMSA08-WP05 (Rev. 1) Standardizing monthly egg survey data as an abundance index for spawning stock biomass of chub mackerel in the Northwest Pacific NPFC-2024-TWG CMSA08-WP05(Rev 1) EggSurvey_Jpn.pdf
    NPFC-2024-TWG CMSA08-WP06 (Rev. 1) Standardized abundance index for recruitment of chub mackerel from Northwest Pacific summer surveys up to 2023 NPFC-2024-TWG CMSA08-WP06(Rev 1) CPUE_standardization_summer_jpn_ver5.docx, Standardized_Index_summer_jpn_ver2.pdf
    NPFC-2024-TWG CMSA08-WP07 (Rev. 1) Standardized CPUE of Chub mackerel (Scomber japonicus) caught by the China’s lighting purse seine fishery up to 2022 NPFC-2024-TWG CMSA08-WP07(Rev 1) Standardized CPUE of CM up to 2022_CHN.pdf
    NPFC-2023-TWG CMSA07-WP07 (Rev. 1) On the description and flexibility of state-space assessment model NPFC-2023-TWG CMSA07-WP07(Rev 1) sam_guidance_Jpn_with_additional_equation.pdf
    NPFC-2024-TWG CMSA08-WP08 (Rev. 1) Standardized Abundance Indices for Ages 0 and 1 Fish of Chub Mackerel from Northwest Pacific Autumn Surveys up to 2023 NPFC-2024-TWG CMSA08-WP08(Rev 1) CPUE_standardization_autumn_Jpn.docx, Standardized_Indices_autumn_jpn_ver2.pdf
    NPFC-2024-TWG CMSA08-WP09 Chub mackerel abundance indices in the North-Western Pacific Ocean based on the results of stocks surveys carried out by Russian research vessels in 2014-2023 NPFC-2024-TWG CMSA08-WP09 CM abundance indices in NWPO surveys 2014-2023_Rus.docx
    NPFC-2024-TWG CMSA08-WP11 Quarterly catches and average weights by age groups NPFC-2024-TWG CMSA08-WP11 Quarterly catches and average weights by age groups_Rus.docx
    NPFC-2024-TWG CMSA08-WP12 Growth and Mortality Estimation for Chub Mackerel based on Chinese data in the Convention Area of NPFC NPFC-2024-TWG CMSA08-WP12 Growth and Mortality of CM in high sea_Chn.docx
    NPFC-2024-TWG CMSA08-WP13 Length-weight relationship and weight at age of chub mackerel Scomber japonicus caught in the northwestern Pacific Ocean by China, Japan, and Russia NPFC-2024-TWG CMSA08-WP13 Length-weight relationship and weight at age.docx, NPFC2024TWG_CMSA8_WP13_LW_relationship.pdf
    NPFC-2024-TWG CMSA08-WP14 Maturity at age of chub mackerel Scomber japonicus caught in the northwestern Pacific Ocean by China and Japan NPFC-2024-TWG CMSA08-WP14 Maturity at age.docx, NPFC2024TWGCMSA8_WP14_MAA.pdf
    NPFC-2024-TWG CMSA-WP15 Catch at length, age length key, and catch at age of chub mackerels Scomber japonicus caught in the northwestern Pacific Ocean by China, Japan, and Russia NPFC-2024-TWG CMSA08-WP15 Catch at length_age length key_catch at age.docx, NPFC2024TWGCMSA8_WP15_CAA.pdf, NPFC2024TWGCMSA8_WP15_CAA_scenarios.pdf
    NPFC-2024-TWG CMSA08-IP01 Report on GIT Repository Plan for TWG CMSA NPFC-2024-TWG CMSA08-IP01 GIT Plan.pdf
    NPFC-2024-TWG CMSA08-IP02 Chub mackerel Russian fishery in the northwest Pacific Ocean Pacific Ocean, research activities in 2023 NPFC-2024-TWG CMSA08-IP02 CM fishery in NWPO and research activities_Rus.docx
    NPFC-2024-TWG CMSA08-IP03 Abundance and Distribution Estimation for Chub Mackerel and Blue mackerel in the Northwest Pacific Based on Scientific Research Surveys NPFC-2024-TWG CMSA08-IP03 Abundance and Distribution of CM and BM_Chn.pdf
    NPFC-2024-TWG CMSA08-IP04 Review of chub mackerel fishery in China and research activities NPFC-2024-TWG CMSA08-IP04 Review of chub mackerel fishery in China in 2023.pdf
    NPFC-2024-TWG CMSA08-IP05 Recent fishery and stock status of chub mackerel from Japan NPFC-2024-TWG CMSA08-IP05 Fishery and stock status_JPN.pdf
    NPFC-2024-TWG CMSA08-IP06 Update on natural mortality estimators for chub mackerel in the Northwest Pacific Ocean NPFC-2024-TWG CMSA08-IP06 UpdatedM_Jpn.pdf
    NPFC-2024-TWG CMSA08-IP07 Spawning of chub mackerel (Scomber japonicus) in the northwestern Pacific
    NPFC-2024-TWG CMSA08-IP08 By-catch data from Japanese mackerel fisheries in the Northwest Pacific NPFC-2024-TWG CMSA08-IP08 By-catch data from mackerel fisheries in NWPO_Rus.pdf
    NPFC-2023-SC08-IP13(Rev 1) Biological Data Provision Template NPFC-2023-SC08-IP13(Rev 1) BiologicalDataProvisionTemplate_Age_0.xlsx, NPFC-2023-SC08-IP13(Rev 1) BiologicalDataProvisionTemplate_ALK_0.xlsx, NPFC-2023-SC08-IP13(Rev 1) BiologicalDataProvisionTemplate_Length_0.xlsx, NPFC-2023-SC08-IP13(Rev 1) BiologicalDataProvisionTemplate_MaturityOgiveAge_0.xlsx
    NPFC-2023-TWG CMSA07-Final Report 7th TWG CMSA meeting report (click for LINK)
    NPFC-2024-TWG CMSA08-RP01 Summary of the 3rd Intersessional Meeting of the Technical Working Group on Chub Mackerel Stock Assessment NPFC-2024-TWG CMSA08-RP01 3rd int TWG CMSA meeting summary.pdf
    NPFC-2023-SC08-Draft Report SC08 Draft Report SC08 Report_0.pdf