Temporal closures are marine resource management strategies that are implemented to control fishing effort, to improve spawning potential by protecting adults during spawning season, or to protect juveniles from depletion during times of recruitment.
Closure year: 2023
Resolutions C-21-04 and C-22-05 on Tuna Conservation establish that:
- Each purse-seine vessel of over 182 metric tons carrying capacity (IATTC size classes 4, 5 and 6) that fishes for tunas in the EPO shall cease fishing from either (1) 29 July to 8 October 2023; or (2) 9 November 2023 to 19 January 2024.
- Each IATTC Member, Cooperating non-Member (CPC) shall ensure that every one of its vessels ceases to fish during one of these two periods.
- For the years 2023 and 2024, CPCs shall ensure that vessels that exceeded during the previous year the annual catch limit of 1,200 metric tons of bigeye tuna shall increase during the following year by 10 additional days the closure period established in paragraph 3 of this resolution.
The additional days of closure pursuant to this paragraph shall be added, as appropriate, to the beginning of the closure for vessels observing the first period and to the end of the closure for vessels observing the second period, so that the closure of the first period shall always end on October 8 and the second period shall always begin on 9 November of each year.
The CPCs will be responsible for estimating the catch of bigeye tuna of each vessel flying its flag at the end of each trip, to the extent that one or more data sources are available to the CPC in the days immediately after the conclusion of the trip and discharge (e.g., observer estimates, ship's log data, well sampling, cannery data). The duty to estimate the catch of the vessel will be the responsibility of the flag CPC.
In 2023 and 2024, any vessel that in the previous year had to apply the extended closure indicated in paragraph 4, and in that same period had caught less than 1,200 metric tons of bigeye tuna, shall apply only the closure days indicated in paragraph 3 of this Resolution.
The IATTC Secretariat shall send to the CPCs by 1 March 2023 and 2024 the names of the vessels that must observe additional closure days in accordance with this paragraph.
A list of the vessels subject to these closures, and of the closure period that each one will observe, is available here (deadline for the notification of the closure period: 15 July 2023).