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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.

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.

ISSF Report: 12 Tuna Stocks Not Meeting Criteria for Marine Stewardship Council (MSC) Fisheries Standard

Fisheries scientists in An Evaluation of the Sustainability of Global Tuna Stocks Relative to Marine Stewardship Council Criteria — a June 2024 report commissioned by the International Seafood Sustainability Foundation (ISSF) — found 11 of the 23 major commercial tuna stocks worldwide are successfully avoiding overfishing and maintaining target stock biomass levels when measured against the Marine Stewardship Council (MSC) Fisheries Standard. In the March 2023 edition of the ISSF report, eight stocks passed Principle 1. In this year’s report, three additional stocks received a passing score.

The 11 stocks are Western Atlantic skipjack, North Atlantic albacore, South Atlantic albacore, Eastern Atlantic bluefin, Western Pacific yellowfin, Western Pacific bigeye, Western Pacific skipjack, Eastern Pacific yellowfin, Eastern Pacific skipjack, Indian Ocean skipjack and Southern Ocean bluefin. These stocks achieved a passing score for the Standard’s Principle 1, “Sustainable Fish Stocks,” which requires fisheries to be managed in a manner that does not lead to overfishing or depletion of exploited fish populations.

Seven of the 23 stocks also have fully implemented well-defined harvest control rules. However, failure to implement controls before rebuilding is required continues to contribute to an increasing number of stocks failing to meet minimum requirements on harvest control rules.

An Evaluation of the Sustainability of Global Tuna Stocks Relative to Marine Stewardship Council Criteria was authored by Paul A. H. Medley and Jo Gascoigne.

About the MSC Fisheries Standard

MSC is an independent, international, non-profit organization that oversees a program to assess global wild-capture fisheries and certify them as “sustainable” if they meet its Fisheries Standard criteria.

About the Report

ISSF 2024-06: An Evaluation of the Sustainability of Global Tuna Stocks Relative to Marine Stewardship Council Criteria takes a consistent, comprehensive approach to scoring tuna stocks based on certain components of the MSC standard. Updated regularly since it was first published in 2013, and organized by individual tuna stock and tuna Regional Fisheries Management Organization (RFMO), the report is designed to:

  • Provide a basis for comparing between stocks scores that are assigned by the same experts
  • Become a useful source document for future tuna certifications
  • Give a “snapshot” of the current status of the stocks and the strengths and weaknesses of RFMOs

The updated scores in the report focus on stock status (MSC Principle 1) and are based on publicly available fishery data. MSC Principle 1 is evaluated in relationship to its Performance Indicators (PIs). The report is adapted to MSC standard 2.01 — released in 2019 — and to changing stock status and management situations. As the MSC has delayed implementation of MSC Standard 3.0, ISSF will adjust the report to measure against the new standard when appropriate in the future. In addition, this update does not re-score the RFMO section (Principle 3).

The Evaluation report includes detailed remarks on each stock, evaluations of the five RFMOs and comprehensive reference citations.

MSC Principle 1

The MSC Principle 1 states: “A fishery must be conducted in a manner that does not lead to over-fishing or depletion of the exploited populations and, for those populations that are depleted, the fishery must be conducted in a manner that demonstrably leads to their recovery.” The report authors attribute stocks with failing scores to poor stock status, the lack of well-defined harvest control rules in place and the lack of effective tools to control harvest. In the 2024 report, seven of the 23 stocks have fully implemented well-defined harvest control rules.

Notes regarding tuna stocks receiving passing scores:

  • Unchanged since last year’s March 2023 version of the report, of nine tuna stocks in the Atlantic Ocean, four received an overall principle-level passing score: Western skipjack, Northern albacore, Southern albacore and Eastern bluefin.
  • Among nine tuna stocks in the Pacific Ocean, these five received overall principle-level passing scores: Western yellowfin, Western bigeye, Western skipjack, Eastern yellowfin and Eastern skipjack. Western yellowfin and Western bigeye did not receive a principle-level passing score in the March 2023 report.
  • Among four tuna stocks in the Indian Ocean, as in last year’s report, only skipjack received an overall principle-level passing score.
  • Southern bluefin received an overall principle-level passing score — a change from last year’s report. This stock is also the second bluefin stock to receive a passing score.

Notes regarding tuna stocks receiving failing scores:

  • In the Atlantic, yellowfin, bigeye, Eastern skipjack, Mediterranean albacore and Western bluefin received principle-level failing scores — as also reported last year.
  • In the Pacific, four stocks — as also reported last year — received overall principle-level failing scores: Eastern bigeye, Northern albacore, Southern albacore and Pacific bluefin.
  • In the Indian Ocean, as reported last year, yellowfin, bigeye and albacore all received overall principle-level failing scores.

An updated infographic featuring average scores based on MSC Principle 1 since 2013 is available for download on ISSF’s website. Additionally, a related infographic featuring average scores for each tuna RFMO based on Principle 3 is available.

Since 2011, ISSF has been an active stakeholder in MSC tuna fishery assessments and certifications. ISSF’s strategic objective is to develop and implement verifiable, science-based practices, commitments, and international management measures to help all tuna fisheries become capable of meeting and maintaining the MSC certification standard.