Saving Seafood

84% of Global Tuna Catch Comes from Stocks at Healthy Levels, While 15% Require Stronger Management

April 2, 2020 — The following was released by the International Seafood Sustainability Foundation:

Of the total commercial tuna catch worldwide, 84% came from stocks at “healthy” levels of abundance, according to the March 2020 International Seafood Sustainability Foundation (ISSF) Status of the Stocks report. In addition, 15% of the total tuna catch was from overfished stocks, and 1% was from stocks at an intermediate level of abundance. The previous version of this report was released by ISSF in October 2019.

Several tuna stocks worldwide are considered overfished and/or subject to overfishing:

  • The Atlantic Ocean bigeye, Eastern Pacific yellowfin, Indian Ocean yellowfin and Pacific bluefin tuna stocks are currently overfished and subject to overfishing.
  • Overfishing is occurring as well on three other stocks: Eastern Pacific bigeye, Indian Ocean bigeye and Indian Ocean albacore.
  • All skipjack and most albacore stocks are healthy.

Ratings for the following species have changed since last reported in October: 

  • The Spawning Biomass (SSB) ratio for Atlantic Ocean yellowfin has improved from yellow to green.
  • The fishing mortality rate ratio for Indian Ocean bigeye has downgraded from green to orange.
  • The fishing mortality ratio for Indian Ocean albacore has downgraded from green to orange.

ISSF publishes its signature Status of the Stocks report twice each year using the most current scientific data on 23 major commercial tuna stocks.

Key Statistics in the Report

  • ​​Abundance or “spawning biomass” levels: Globally, 65% of the 23 stocks are at healthy levels of abundance, 17.5% are overfished and 17.5% are at an intermediate level.
  • Fishing mortality levels: 70% of the 23 stocks are experiencing a well-managed fishing mortality rate, and 30% are experiencing overfishing.
  • Total catch: In 2018, the catch of major commercial tuna stocks was 5.1 million tonnes. 58% was skipjack tuna, followed by yellowfin (29%), bigeye (8%) and albacore (4%). Bluefin tunas accounted for 1% of the global catch.
  • Largest tuna catches by stock: The five largest catches in tonnes, unchanged since the previous report, are Western Pacific Ocean skipjack, Western Pacific Ocean yellowfin, Indian Ocean skipjack, Indian Ocean yellowfin and Eastern Pacific Ocean skipjack.
  • Tuna production by fishing gear: 66% of the catch is made by purse seining, followed by longline (10%), pole-and-line (8%), gillnets (4%) and miscellaneous gears (12%).  These percentages changed minimally since the previous report.

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

Western Pacific Council Recommends 2020 Bigeye Tuna Catch, Allocations for U.S. Pacific Territories

March 17, 2020 — The Western Pacific Regional Fishery Management Council in Honolulu recommended that the federal catch limits for longline-caught bigeye tuna for the U.S. Territories of American Samoa, Guam and the Commonwealth of the Northern Mariana Islands for fishing year 2020 remain at 2,000 metric tons each and the allocation limits be up to 1,500 mt each with a cap of 3,000 mt overall.

Previously, the allocation limits were up to 1,000 mt for each Territory. The new allocation limits and cap ensure that the potential environmental impact remains the same while allowing the territories more flexibility in their allocation choices. The Council’s recommendation from last week’s meeting will be reviewed by the Secretary of Commerce for approval, according to a press release from the Council.

Read the full story at Seafood News

Meeting on Management of US Pacific Island Fisheries Next Week Allows Web Participation

March 9, 2020 — The following was released by the Western Pacific Regional Fishery Management Council:

Members of the public concerned about the coronavirus can participate in next week’s 181st meeting of the Western Pacific Regional Fishery Management Council by web conference. The public may also participate in person in the March 10 to 12 meeting 8:30 a.m. to 5 p.m. at the YWCA Atherton Hall, 1040 Richards St., Honolulu, and the associated Fishers Forum on Hawai’i fisheries from 6 to 9 p.m. in the upstairs ballroom at Aloha Tower Marketplace, 1 Aloha Tower, Honolulu.

Key agenda items for the meeting include annual catch limits for the bottomfish fisheries of Guam and the Commonwealth of the Northern Mariana Islands (CNMI) for fishing years 2020-2023; revisions to the list of federally managed bottomfish species in American Samoa, Guam and the CNMI; catch and allocation limits for longline-caught bigeye tuna in the US Pacific Island territories for fishing year 2020; and marine conservation plans for Guam, CNMI and the Pacific Remote Island Areas.

To participate by web conference: Go to https://wprfmc.webex.com/join/info.wpcouncilnoaa.gov. You may connect to the audio via the computer or telephone. If you use the telephone for the audio, sign into Webex via your computer first and look for the “call in” prompt to obtain the call-in instructions and a participant number.

Instructions for making public comment via Webex: Public comments will be taken at the end of each agenda section for items relevant to the applicable agenda section only. Comments on non-agenda items will be taken at 4 p.m. on March 10. To make a public comment, send a private chat message via Webex to the “host (Western Pacific Regional Fishery Management Council)” prior to the start of the public comment period of the applicable agenda section. Your name will be added to the public comment queue. Keep your audio connection muted until you are acknowledged by the chair to speak.

For more information on the meeting and Fishers Forum, go to www.wpcouncil.org/meetings-calendars/ or contact the Council at info@wpcouncil.org or (808) 522-8220.

Scientists to Address 2020 Bottomfish and Bigeye Tuna Catches for US Pacific Territories

March 2, 2020 — The following was released by the Western Pacific Regional Fishery Management Council:

Scientists from throughout the Pacific will meet March 3 to 5 in Honolulu to discuss acceptable catch of bottomfish in Guam and the Commonwealth of the Northern Mariana Islands (CNMI) and catch and allocation limits for longline-caught bigeye tuna in Guam, CNMI and American Samoa. The Scientific and Statistical Committee (SSC) of the Western Pacific Regional Fishery Management Council will convene 8:30 a.m. to 5 p.m. at 1164 Bishop St., Suite 1400. The meeting is open to the public.

Guam and CNMI Bottomfish Fisheries: The SSC is scheduled to set the acceptable biological catches (ABCs) for the Territories of Guam and CNMI bottomfish fisheries for fishing year 2020-2023. The ABCs will be based on the 2019 stock assessment of the fisheries, which is the best scientific information available. The assessment found the Guam bottomfish to be overfished but the fishery is not experiencing overfishing, and the CNMI to be neither overfished nor experiencing overfishing. The ABCs will be based on the overfishing limit (OFL) reflected in the stock assessment minus any scientific uncertainties and will be used by the Council to set the annual catch limits (ACLs) for the fisheries. The Council is scheduled to meet March 10 to 12 in Honolulu to recommend the ACLs and address other matters.

Guam, CNMI and American Samoa Longline-Caught Bigeye Tuna: Conservation and management measures for Western and Central Pacific bigeye tuna are developed by the international Western and Central Pacific Fisheries Commission (WCPFC). The WCPFC has developed specific national quotas for longline-caught bigeye tuna for six member countries, including the United States. However, no quotas are specified for small island developing states (SIDS) and territories (including American Samoa, Guam and the CNMI) in recognition of their aspirations to develop their fisheries. Although not required by the Commission, the Council developed quotas for the US Pacific Territories. Also established was a management framework that allows the US Territories to allocate a portion of their catch limits through Specified Fishing Agreements with US vessels permitted under the Pelagic Fishery Ecosystem Plan for the purposes of responsible fisheries development in the Territories. The current catch limits are 2,000 metric tons (mt) per Territory of which up to 1,000 mt can be allocated. The SSC will review the bigeye longline catch and allocation limits and may make recommendations to the Council to adjust them.

Other items on the SSC agenda

  • American Samoa, Guam and CNMI Bottomfish Management: The original Bottomfish Fishery Management Plan (FMP) for the Western Pacific Region listed 20 fish species that dominated the landings, which included both shallow and deep-water species. The bottomfish were grouped into a single complex for management purposes. In 2009, the bottomfish management unit species (BMUS) were amended as part of the restructuring of the Council’s FMPs into place-based Fishery Ecosystem Plans (FEPs). American Samoa, Guam and CNMI each had its own BMUS list, which continued to be treated as a complex for management purposes. The BMUS lists for the territories were most recently revised in 2018 when some MUS were designated as Ecosystem Component Species, which do not require ACLs. The territory bottomfish fisheries have evolved over time, which may warrant further amendments of the BMUS.
  • Rebuilding Plan: The release of the 2019 benchmark stock assessment for the territory bottomfish fishery triggered the development of a rebuilding plan for the American Samoa and Guam bottomfish that were considered overfished. This is the first rebuilding plan that will be developed for the region. The SSC is scheduled to discuss its role in the rebuilding plan development process and determine the scientific information needed to develop the plan.
  • Electronic Reporting: The SSC will review and make recommendations to the Council on reporting requirements, cost allocation, and data management of electronic reporting in the Hawaii longline fishery.

Recommendations made by the SSC on these and other matters will be considered by the Council when it meets March 10 to 12, 2020, at the YWCA Atherton Hall, 1040 Richards St., Honolulu. For agendas and briefing documents for the SSC, Council and related advisory body meetings, go to http://www.wpcouncil.org/public-meetings/ or contact the Council at info@wpcouncil.org or call (808) 522-8220.

ICCAT lowers catch limit, reduces FADs for bigeye tuna

November 29, 2019 — At its annual meeting earlier this week, the International Commission for the Conservation of Atlantic Tunas took steps to reduce fishing effort for bigeye tuna.

The regional fisheries management organization lowered the total allowable catch for bigeye tuna in 2020 and 2021 from 62,500 metric tons (MT) to 61,500 MT, and reduced the allowed maximum number of fish aggregating devices (FADs) from 500 to 350 in 2020 and to 300 2021. It also implemented a FAD fishing closure period for the entire Atlantic area for two months in 2020 and three months in 2021. In addition, ICCAT increased coverage by its observer program from 5 percent to 10 percent and moved to develop minimum standards for electronic monitoring.

Read the full story at Seafood Source

ISSF: 15% of world’s tuna catches come from over-fished stocks

October 24, 2019 — About 15% of total commercial tuna catches worldwide come from overfished stocks, according to a new report by the International Seafood Sustainability Foundation (ISSF) on the status of tuna stocks.

With stocks described as overfished and overfishing taking place, Atlantic Ocean bigeye and Indian Ocean yellowfin tuna stocks face a particular challenge, according to the report.

ISSF, formed in 2009 as a global, non-profit partnership among the tuna industry, scientists and World Wide Fund for Nature, assessed status of seven species of major commercial oceanic tuna. This included 23 stocks in total (6 albacore, 4 bigeye, 4 bluefin, 5 skipjack and 4 yellowfin stocks).

Read the full story at Undercurrent News

PNA data offers a better understanding of drifting FADs

October 10, 2019 — In recent years, concern has been growing about bycatch of juvenile bigeye tuna by purse-seiners setting nets on drifting fish aggregation devices (dFADs). The main target of the purse-seiners is the more plentiful skipjack tuna, but as bigeye inhabit the same tropical seas, they are often taken as well.

The devices typically consist of a raft or buoy trailing a length of disused netting tied into the shape of a string of sausages, used to attract tuna – which like to gather under floating objects. Modern dFADs are equipped with a solar-powered GPS device and a fish finder to report their location and the amount of fish gathered under them. Support vessels manage the deployment and retrieval of the dFADs, so that fishing vessels can concentrate on fishing.

Read the full story at Seafood Source

Second bigeye and yellowfin tuna fishery achieves MSC certification

October 10, 2019 — The Marine Stewardship Council has announced that longline fishing vessels under the management of the Marshall Islands Fishing Venture that target bigeye and yellowfin tuna have achieved certification to the MSC standards.

Based in the Republic of the Marshall islands in the Southwest Pacific,  the fishery is now the second bigeye tuna fishery in the world to meet the requirements of MSC certification, after a yellowfin and bigeye tuna fishery in the Federated States of Micronesia achieved certification in March. Both fisheries are operated by Liancheng Overseas Fishery (Shenzhen) Co. Ltd.

Read the full story at Seafood Source

Pacific bigeye tuna fishery decline expected due to climate change

July 23, 2019 — A decline in Hawaii’s deep-set longline bigeye tuna fishery may be “inevitable” with climate change, according to a study by researchers in Hawaii and Australia.

Changes to bigeye tuna’s food supply, via changes to the plankton community, and temperature, will reduce yields because it will affect tuna’s fitness. This will impact tuna’s aerobic scope and ability to successfully forage, researchers from Pacific Islands Fisheries Science Center, University of Hawaii at Manoa, Honolulu, and the Marine and Antarctic Studies, University of Tasmania said.

Proactive fisheries management could be an effective tool for mitigating climate change, either by balancing or outweighing climate effects. “However, modeling these [climatic] stressors jointly shows that even large management changes cannot completely offset climate effects.”

Read the full story at Undercurrent News

Preserving Poke in a Changing Climate

July 18, 2019 — The following was released by NOAA Fisheries:

Managing bigeye tuna in the Pacific is already challenging, and now a new study shows that climate change may affect our supply of this fish, used to make the deliciously popular ʻahi poke. The study projects the decline of catch in Hawai‘i’s bigeye tuna fishery as climate change continues to unfold. However, alternate scenarios could bolster ecosystem resilience and limit fishery declines.

Scientists from the Pacific Islands Fisheries Science Center, the University of Hawai‘i, and the University of Tasmania teamed up to model the ecosystem in which Hawai‘i’s bigeye tuna fishery operates. Their model projected how increasing ocean temperatures and declining plankton would affect specific fish species. (Temperature and plankton values were from a suite of climate models used by the Intergovernmental Panel on Climate Change.) The model also predicted how different scenarios, such as decreased fishing effort, could change those effects.

The scientists found that climate change led to a decline in catch regardless of whether fishing effort increased, decreased, or remained the same. A decline in bigeye tuna catch means less ‘ahi poke at your local market. However, the study also revealed fishing scenarios that may allow the ecosystem to remain resilient in the face of climate change.

“Rather than seeing the results as a doom-and-gloom future for Hawai‘i’s fishery, I see them as encouraging. They show that local choices matter, that we can decide which future scenario we want to pursue,” says lead author Phoebe Woodworth-Jefcoats. She points to two future scenarios in particular:  In one, the fishery persisted with today’s fishing effort. In another, the fishery slowly reduced its effort to half. Both scenarios showed similar declines in bigeye tuna catch, but in the second scenario, the ecosystem was resilient despite the effects of climate change, and the biomass of each fish species increased.

Read the full release here