- Objectives
- Continue technical development of MSE for tropical tunas.
- Provide training and enhance dialogue / communication among scientists, industry, managers and other stakeholders regarding the MSE process for tropical tunas through the facilitation of a series of workshops.
- Elicit alternative candidate reference points, harvest control rules, performance metrics from stakeholders to be tested in addition to the interim ones.
- Background
- The Performance Review of the IATTC, the proposed Strategic Science Plan, and the SAC all recommended improving knowledge sharing, human-institutional capacity building and communication of scientific advice.
- MSE is a major objective at IATTC and other organizations. Part of the MSE process is highly technical and done by scientists. Another part (defining objectives, performance metrics, candidate management strategies), requires input and participation of managers and other stakeholders. These parts evolve in synergy.
- Stakeholder participation throughout the MSE process is central to its success and will be facilitated by understanding the MSE process, its components and by strengthening communication among scientists, managers and other stakeholders.
- Initial introductory workshops on MSE in 2015, 2018, restricted to Latin-American developing countries. Further MSE training workshops for the tuna Industry were held in 2019. Three IATTC MSE Workshop were held (2019, 2021, 2022).
- Relevance for management
- Key elements of IATTC’s current management strategy, such as its control rule and reference points, along with alternatives, are currently being evaluated via MSE.
- The technical support will allow for better model development and directly influence the relevance of the MSE results.
- Workshops will improve scientists, managers and other stakeholder communication and important input for the technical work.
- Results will facilitate adopting a permanent tropical tuna HCR as per Res. C-16-02.
- Duration
- MSE Workplan for BET extended to 2024, however funds expire at the end of 2023
- Workplan and status
- Continue technical development of MSE and support of IATTC Staff.
- Development/tailoring of MSE Workshop materials and online resources to EPO tropical tuna fisheries including presentations and hands-on working sessions.
- Conduct annual Workshops with managers, industry and other stakeholders to improve understanding of the MSE process, elicit objectives, performance metrics, alternative control rules, and risk, as well as to show initial results/gather feedback
- External collaborators
- Work to be carried out by external contractor and IATTC staff.
- Deliverables
- Reporting to SAC of MSE development, progress, and results. Series of Workshops, Workshop reports and associated training and online materials.
- Updated date: 01 May 2023
- Progress summary for the reporting period
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- Challenges and key lessons learnt
- Pandemic altered the timeline and format of the 2nd and 3rd WS, continuation of funding not secured yet.
- Presentations:
- March 2019: Independent review of bigeye assessment
- December 2019: 1st. IATTC MSE Workshop Presentations
- May 2021: 2nd IATTC MSE Workshop Presentations
- December 2022: 3rd IATTC MSE Workshop Presentations
Publications:
- WSBET-02-02 Stock structure for bigeye tuna in the eastern Pacific Ocean
- WSBET-02-05 Growth used in the eastern Pacific Ocean bigeye tuna assessment
- WSBET-02-07 Natural mortality used in the eastern Pacific Ocean bigeye tuna assessment
- Valero, J. L. 2019. Conversion of BET 2017 base case assessment from Stock Synthesis version 3.23b to 3.3. 2nd Bigeye Assessment Review. La Jolla, California (USA), 11-15 March 2019.
- Valero, J. L., Maunder, M., Xu, H., Minte-Vera, C. V., Lennert-Cody, C., Aires-da-Silva, A. 2019. Investigating potential causes of misspecification-induced regime shift in recruitment in the EPO bigeye tuna (Thunnus obesus) assessment. 2nd Bigeye Assessment Review. La Jolla, California (USA), 11-15 March 2019.
- Valero, J. L., Maunder, M., Xu, H., Minte-Vera, C. V., Lennert-Cody, C., Aires-da-Silva, A. 2019. Spatial stock assessment model options for bigeye tuna (Thunnus obesus) in the EPO and beyond. 2nd Bigeye Assessment Review. La Jolla, California (USA), 11-15 March 2019.
- Valero, J. L. and Aires-da-Silva, A. 2020. 1st Workshop On Management Strategy Evaluation (MSE) For Tropical Tunas: Overview, Objectives and Performance Metrics. IATTC. Meeting Report. • Maunder, M., Minte-Vera, C., Lennert-Cody, C., Valero, J.L., Aires-da-Silva, A., Xu, H.. 2020. Risk analysis for yellowfin tuna: models and their weights. IATTC, 11th Scient. Adv. Com. Meeting.
- Aires-da-Silva, A., Maunder, M. N., Valero, J. L., Xu, H., Minte-Vera, C., Lenner-Cody, C. 2020. Risk analysis for management of the tropical tuna fishery in the eastern Pacific Ocean. IATTC, 11th Scient. Adv. Com. Meeting.
- Xu, H., Maunder, M., Minte-Vera, C., Valero, J. L., Lennert-Cody, C. 2020. Benchmark stock assessment of bigeye tuna in the eastern Pacific Ocean for 2019. Inter-Amer. Trop. Tuna Comm., 11th Scient. Adv. Com. Meeting. Minte-Vera, C., Maunder, M., Xu, H., Valero, J.L., Lennert-Cody, C. 2020. Benchmark stock assessment of yellowfin tuna in the eastern Pacific Ocean for 2019. IATTC, 11th Scient. Adv. Com. Meeting.
- Maunder, M., Xu, H., Lennert-Cody, C., Valero, J.L., Aires-da-Silva, A., Minte-Vera, C. 2020. Implementing Reference Point-based fishery harvest control rules within a probabilistic framework that considers multiple hypotheses. IATTC, 11th Scient. Adv. Com. Meeting.
- Valero, J. L. 2023. Management strategy evaluation (MSE) for tropical tuna fisheries in the EPO: progress report. Document SAC-14-INF-F. Inter-Amer. Trop. Tuna Comm.
- Valero, J. L., and A. Aires-da-Silva. 2023. 3rd IATTC Workshop on Management Strategy Evaluation (MSE) for tropical tunas: management objectives and performance metrics. IATTC Meeting Report.
- Valero, J. L., and A. Aires-da-Silva. 2022. 2nd IATTC Workshop on Management Strategy Evaluation (MSE) for tropical tunas: management objectives and performance metrics. IATTC Meeting Report.
- IATTC. 2021. Development, Communication And Evaluation Of Management Strategies (MSE) For Tropical Tuna Fisheries In The EPO Involving Managers, Industry, Scientists And Other Stakeholders. Document IATTC-98-INF-I. Inter-Amer. Trop. Tuna Comm., 98th Annual Meeting.
