Program(s) in charge: Stock Assessment Program
Click to see projects by theme, goal or target:
- Theme 3. Sustainable fisheries
- Build upon the previous collaborative work and continue to develop dorado stock assessment methodologies
- Expand the MSE for dorado by evaluating alternative reference points and harvest control rules.
- Some Members of the IATTC are interested in obtaining MSC certification for their dorado fisheries, and have requested guidance in developing of reference points (RPs) and harvest control rules (HCRs).
- Other Members are seeking guidance regarding data collection, research efforts, and management options
- Relevance for management
- The results of the project, such as alternative estimates of stock status (e.g. assessments, depletion estimator), reference points, and harvest control rules, could be used by the Commission, or by individual Members, in developing, adopting, and subsequently modifying as necessary, a harvest strategy for dorado.
- 6 months, starting January 2019
- Workplan and status
- Alternative RPs and HCRs will be evaluated, and their respective advantages and disadvantages will be discussed, to assist Members considering the implementation of reference points and harvest control rules for dorado.
- The performance of alternative assessment methods, HCRs and RPs will be evaluated by simulation methods, using Stock Synthesis. Candidates for the different components of a management strategy (data, assessment method, HCR, RPs) and the performance measures to judge such strategies will be identified.
- Options will include minimum size limits, precautionary lower CPUE levels that would trigger management actions. Alternative RPs will be developed with yield-per-recruit considerations, as well as alternative expected reductions of recruitment without fishing (R0) and unfished biomass (B0).
- External collaborators
- Work to be carried out by external contractor
- List of candidate RPs and HCRs to be tested using a management strategy evaluation (MSE) framework; • Simulation study to evaluate candidate HCRs and RPs;
Written report summarizing the results; and presentation at SAC-10.