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Author: svanouse

88% of Global Tuna Catch Comes from Stocks at Healthy Levels; 10% Requires Stronger Management

Of the total commercial tuna catch worldwide, 88% comes from stocks at “healthy” levels of abundance, according to the November 2024 International Seafood Sustainability Foundation (ISSF) Status of the Stocks report, marking an improvement of two percentage points compared to previous March 2024 report findings. Overfished stocks account for 10% of the total catch—unchanged from the last report. The percentage of the catch that came from stocks at an intermediate level of abundance decreased from 4%—as reported in March 2024—to 2%.

Changes in stock status ratings since the March 2024 report include:

  • Abundance or “spawning biomass” (SSB) and exploitation rate or fishing mortality (F) ratings for Eastern Pacific Ocean bigeye improved from yellow to green.
  • Pacific Ocean bluefin’s F rating also improved from yellow to green.
  • SSB and F ratings for Atlantic Ocean Mediterranean albacore changed from orange to yellow. However, there is high uncertainty about the stock status due to poor monitoring and basic fishery statistics.

According to the November 2024 report, the below tuna stocks are considered overfished and/or subject to overfishing:

  • Indian Ocean bigeye and Indian Ocean yellowfin stocks are overfished and subject to overfishing, unchanged since the March 2024 report.
  • Pacific Ocean bluefin is overfished, also unchanged since the March 2024 report.

In terms of Regional Fisheries Management Organizations (RFMO) stock management, key updates since March 2024 include:

  • The Indian Ocean Tuna Commission (IOTC) adopted a new management procedure for skipjack tuna that will help reverse overcatch and ensure the long-term sustainability of the species.
  • The IOTC and the Inter-American Tropical Tuna Commission (IATTC) released updated fish aggregating device (FAD) measures, helping to improve how FADs are used and managed, reducing the impacts of FADs on the ecosystem, and increasing monitoring of these devices at sea.

ISSF publishes its signature Status of the Stocks report several times yearly using the most current scientific data on 23 major commercial tuna stocks. Related infographics for the November 2024 report are available here and here.

Key Statistics in the New Status of the Stocks Report

  • Abundance or SSB levels: Globally, 65% of the stocks are at a healthy level of abundance—an improvement of four percentage points since the March 2024 report. Additionally, 13% of the stocks are overfished—marking a decrease of four percentage points since the previous report. Unchanged since the March 2024 report, 22% are at an intermediate level.
  • Fishing mortality levels: 87% of the 23 stocks are not experiencing overfishing—an improvement of nine percentage points from the March 2024 report. Nine percent are experiencing overfishing—a four-percentage-point decrease since the previous report. Also, 4% are at an intermediate level—a five-percentage-point reduction since March 2024.
  • Tuna production by fishing gear: 66% of the catch is made by purse seining, followed by longline (9%), pole-and-line (8%), gillnets (3%) and miscellaneous gears (14%).
  • Largest tuna catches by stock: The five largest catches in tonnes—all unchanged since the previous report except for Eastern Pacific Ocean skipjack—are Western Pacific Ocean skipjack, Western Pacific Ocean yellowfin, Indian Ocean skipjack, Indian Ocean yellowfin, and Eastern Pacific Ocean skipjack. In the March 2024 report, Eastern Pacific Ocean yellowfin was amongst the five largest tuna catches by stock.
  • Total catch: The catch of major commercial tunas was 5.2 million tonnes in 2022, a 2% increase from 2021. Fifty-seven percent of it was skipjack tuna, followed by yellowfin (30%), bigeye (7%) and albacore (5%). Bluefin tunas accounted for 1% of the global catch.

The Status of the Stocks report is reviewed by the ISSF Scientific Advisory Committee (SAC), which provides advice on its content. The report does not advocate any particular seafood purchase decisions.

About the Status of the Stocks Report

There are 23 stocks of major commercial tuna species worldwide—six albacore, four bigeye, four bluefin, five skipjack and four yellowfin stocks. The Status of the Stocks summarizes the results of recent scientific assessments of these stocks and the current management measures adopted by the RFMOs, as of September 30, 2024. Status of the Stocks assigns color ratings (green, yellow or orange) using a consistent methodology based on two factors: Abundance and Exploitation Rate (fishing mortality).

ISSF produces several Status of the Stocks reports each year to clarify where we stand—and how much more needs to be done—to ensure the long-term sustainability of tuna stocks. The Status of the Stocks presents a comprehensive analysis of tuna stocks by species, and the Evaluation of the Sustainability of Global Tuna Stocks Relative to MSC Criteria provides scores for the stocks and RFMOs based on MSC assessment criteria. Together, these tools help define the continuous improvement achieved and the areas and issues that require more attention.

In addition, ISSF maintains a data visualization tool based on its Status of the Stocks report. The “Interactive Stock Status Tool” is located on the ISSF website and accessible through the Status of the Stocks overview page. Users can easily toggle through tuna abundance and exploitation health indicators by catch or stock, filter by location and species, and see the share of total catch by species/stocks and gear types.

 

 

Latest Update to ISSF Participating Company Compliance Report Shows 99.1% Conformance with ISSF Conservation Measures

The International Seafood Sustainability Foundation (ISSF) has released its Update to ISSF Annual Conservation Measures & ProActive Vessel Register Compliance Report, which shows a conformance rate of 99.1% by 23 ISSF participating companies with all 33 ISSF conservation measures in effect.

This report updates the ISSF Annual Conservation Measures & ProActive Vessel Register Compliance Report published in June 2024 and reflects efforts by ISSF participating companies to improve on those instances where less than full compliance was achieved. Remedial audits, if any, take place between June and October each year against measures for companies with minor nonconformance or major nonconformance.

Following the remediation period since the annual compliance report in June 2024, 17 of 23 companies fully complied with 33 audited measures, five companies had one minor non-conformance, and one had two minor non-conformances. The 99.1% conformance rate is a slight increase from 98.95% in June.

As part of its commitment to foster transparency and accountability in the fishing industry, ISSF engages third-party auditor MRAG Americas to assess ISSF participating seafood companies’ compliance with ISSF conservation measures according to a rigorous audit protocol.

“The transparent and independent auditing process our participating companies and vessels volunteer to undergo builds on the foundation of accountability that makes our conservation measures effective — and helps to hold other industry players to high standards,” said ISSF President Susan Jackson. “ISSF participating companies and vessels make the continuous improvement of global tuna fishery sustainability a key part of their business operations by individually committing to conservation measures and providing transparency into ongoing efforts and progress.”

ISSF’s report also includes the aggregate compliance rate of vessels listed on its ProActive Vessel Register (PVR). That data — reported as of December 31, 2023 — is unchanged from the June 2024 report. For PVR-listed vessels, the report shows an aggregate compliance rate of 76% with the 12 ISSF conservation measures that directly address vessel activity, including RFMO Participation; Transactions with Vessels that Use Only Non-entangling FADs; Vessel-based FAD Management Policy; and Observer Coverage, for example. The PVR is one of four public vessel lists ISSF provides to foster transparency in tuna fishing.

Details of the Updated Report

The November 2024 report is based on updates to the initial audit results published in June 2024, which showed six companies had one minor non-conformance with conservation measures in the prior year, and one company had two minor non-conformances.

The Update to ISSF Annual Conservation Measures & ProActive Vessel Register Compliance Report is published in November to track ISSF participating companies’ progress in conforming with ISSF conservation measures like these:

MRAG Americas also issues individual ISSF participating company reports that detail each company’s compliance with the ISSF conservation measures for the year. These will include any “update” reports, published throughout the year, that explain how individual companies have remediated any non-conformances on the conservation measures.

More Information on ISSF Conservation Measures & Compliance

For long-term sustainability, tuna companies worldwide participate with ISSF, follow responsible fishing practices and implement science-based conservation measures. From bycatch mitigation to product traceability, ISSF participating companies have committed to conforming to conservation measures and other commitments designed to drive positive change — and to do so transparently through third-party audits.

View the updated report here and related infographics here.

View ISSF conservation measures here.

View ISSA compliance policy here.

A Global View of ISSF & Tuna Industry Influence for Sustainable Fishing Policies

Beginning with a network of 23 leading progressive seafood companies and extending to Marine Stewardship Council (MSC)-certified tuna fisheries and tuna fishery improvement projects (FIPs) — including stakeholders that ISSF technical experts engage with — ISSF’s advocacy partnerships with the fishing industry have a broad global reach and impact. This Web feature visualizes that “influence network” in four major tuna fishing regions.

ISSF Updates “Snapshot of the Large-Scale Tropical Tuna Purse Seine Fishing Fleets” for 2024

The International Seafood Sustainability Foundation (ISSF) has updated its ISSF 2024-05: Snapshot of Large-Scale Tuna Purse Seine Fishing Fleets report for June 2024. The report shows approximately 650 vessels defined as large-scale purse-seine (LSPS) vessels are fishing for tropical tuna species, a slight decrease of 0.3% from last year, with a combined fishing capacity of 863,000 m3 (cubic meters), a 3% increase from last year.

Purse seine fishing vessels catch about 66% of the 5.2 million tonnes of tuna caught annually worldwide. ISSF analyzes and aggregates information from the five tuna regional fisheries management organizations (RFMOs) and other sources to create this annual report focusing on LSPS vessels targeting tropical tuna species: skipjack, yellowfin and bigeye.

Report Key Findings

Large-scale purse-seine (LSPS) vessels are defined as having 335 m3 fish hold volume (FHV), a measure of vessel capacity, or greater. The number of LSPS vessels targeting tropical tuna fluctuates from year to year due to several factors, such as new vessels being constructed or vessels no longer active due to being sunk or scrapped. In addition, the report aims to estimate active capacity, omitting vessels not listed on the RFMO Authorized Vessel Records when the “snapshot” was taken.

This year’s report shows that 20 LSPS vessels built after 2012 — including seven built in 2023 and one in 2024 — were added to the tropical tuna RFMO authorized vessel lists since the prior Snapshot released in June 2023. Around half of these newly constructed vessels are flagged to Indonesia and have an FHV close to the 335 m3 threshold.

The number of LSPS vessels slightly decreased to 650 vessels compared to the 652 reported last year. Those vessels had 863,000 m3 of combined fishing capacity — up 3% from 841,000 m3 reported in June 2023. Notably, most LSPS vessels (504) are registered on the ISSF ProActive Vessel Register (PVR), and PVR-registered LSPS vessels represent 78% of the total number and 84% of FHV. The independently audited PVR is one of four ISSF public vessel lists that foster transparency in tuna fisheries. Fishing vessels can be registered on the PVR to show how they follow best practices supporting sustainable tuna fisheries.

The “snapshot” report summarizes all changes that have taken place annually since 2012 and shares additional findings and observations, including:

  • The total number of all purse-seine vessels worldwide increased from 1,837 in 2023’s report to 1,939 today.
  • About 12% of large-scale vessels are authorized to fish in more than one RFMO, which should be considered in any efforts to manage fishing capacity at a regional level.
  • Among the tuna RFMOs (tRFMOs), the Western and Central Pacific Fisheries Commission still has the highest LSPS registrations (305).

Report Recommendations

An accurate estimate of active vessels is critical for managing tuna fishing capacity regionally and globally. The figures shared in the ISSF report may underestimate the total fleet size because many small-scale purse seiners or purse seiners operating in only one exclusive economic zone are not required to be listed on RFMOs’ records of authorized fishing vessels. The report recommends that all tRFMOs maintain lists of vessels authorized to operate in the entire Convention Areas and lists of vessels actively fishing in the Convention Areas each year. These actions would help make it possible to estimate active capacity by region in any given year.

Compared to last year’s estimates, there were numerous changes in tRFMO-authorized vessel records once more. Several vessels that appeared on the records in 2023 can no longer be found. Other — older — vessels that were not on the records are now listed, and some vessels have been reclassified as being large or not large using vessel size data that was not previously available.

The quality of data in RFMO records has improved in recent years, but substantial gaps remain. The report recommends, “Tuna RFMO members exercise greater quality control of the vessel data they submit to the tRFMOs for the vessel records and tRFMOs adopt vessel registry requirements that include quality control mechanisms.”

View the updated report here and a related infographic here.