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Yellowfin and Bigeye Catch Limit, FAD Data Improvements, and Increased Observer Coverage Top Conservation Group’s “Asks” for Sustainable Atlantic Tuna Fisheries

November 14, 2017 — WASHINGTON — The following was released by the International Seafood Sustainability Foundation: 

The International Seafood Sustainability Foundation (ISSF) has released its position statement in advance of the 25th Regular Meeting of the International Commission for the Conservation of Atlantic Tunas (ICCAT) in Marrakech, Morocco, on 14-22 November 2017.

“ICCAT made substantial headway last year by agreeing to maintain total allowable catch levels for yellowfin and bigeye tuna stocks, which have experienced overfishing in recent years,” said ISSF President Susan Jackson. “But ICCAT’s science committee estimates that catch limits for bigeye and yellowfin were still exceeded in 2017, by 11 percent and 16 percent, respectively. The situation must be addressed.”

ISSF is asking that ICCAT adopt stock-specific measures in line with its science committee’s advice and that it allocate the yellowfin catch limit by gear type so that ICCAT member countries can know their individual limits. ICCAT must also ensure that fishing capacity of purse seine fleets is in line with catch limits and adopt in-season catch monitoring to avoid exceeding those limits.

FAD Management

ISSF also asks that ICCAT immediately address persistent gaps in FAD data reporting and ensure that requirements for non-entangling FADs are met. Further, ICCAT should implement its FAD Working Group recommendation to extend 100 percent observer coverage on large-scale purse seine vessels to the entire year.

“FAD sets account for nearly 50 percent of tropical tuna catches in the Atlantic Ocean,” Jackson continued. “We have to improve the monitoring and management of FAD usage in all ocean regions, and that starts with RFMO contracting parties complying with required data reporting. ICCAT scientists cannot effectively analyze and provide management recommendations on FADs without access to the best information.”

Longline Observer Coverage

Troublesome data gaps also persist for the longline sector. ICCAT scientists have highlighted that the current 5% observer coverage requirement is inadequate to provide reasonable estimates of total bycatch. And data on observer coverage in longline fisheries indicates some fleets are not meeting even this 5% mandatory minimum. This lack of data on longline catches and interactions with non-target species hinders scientific input on effective conservation measures. It must be rectified.

ISSF urges ICCAT to implement its scientific staff’s recommendation to increase the minimum level of observer coverage to 20% for longline fleets, and other major gears. At the same time, ICCAT must strengthen compliance by identifying and sanctioning non-compliance through its Compliance Committee. ISSF is also recommends that ICCAT develop binding measures to ensure the safety of human observers.

Other priority improvements in the ISSF position statement include:

§  Adoption of interim Harvest Control Rules (HCRs) for North Atlantic Albacore that have been tested by the science committee and execution of an independent peer review of the management strategy evaluations set in place last year.

§  Adoption of measures to strengthen the region’s existing shark finning measures and reduce catches of northern shortfin mako sharks, and require that accurate data are collected and submitted on catches of all oceanic sharks.

§  Development of E-monitoring and E-reporting standards for longline vessels, as soon as possible.

§  Adoption of further amendments to modernize the ICCAT VMS measure and bring it in line with global best practices.

Read the full position statement in English, French or Spanish.

About the International Seafood Sustainability Foundation (ISSF)

The International Seafood Sustainability Foundation (ISSF) is a global coalition of scientists, the tuna industry and World Wildlife Fund (WWF) — the world’s leading conservation organization — promoting science-based initiatives for the long-term conservation and sustainable use of tuna stocks, reducing bycatch and promoting ecosystem health. To learn more, visit https://iss-foundation.org/, and follow ISSF on Twitter,Facebook and Instagram.

Worldwide Industry, NGOs Advocate for Policy Changes in Tuna Fisheries in 2017

March 24, 2017 — SEAFOOD NEWS — A diverse, global group of commercial and non-profit organizations has joined the International Seafood Sustainability Foundation’s (ISSF) call for immediate improvements on tuna management, including developing harvest strategies, strengthening monitoring, control and surveillance tools, and improving the management of fish aggregating devices (FADs).

A March 21 outreach letter to four tuna Regional Fishing Management Organizations (RFMO) was co-signed by 83 nongovernment organizations, tuna processing companies, fleet associations, retailers, importers and food service operators. The RFMOs are IATTC (Inter-American Tropical Tuna Commission), ICCAT (International Commission for the Conservation of Atlantic Tunas), IOTC (Indian Ocean Tuna Commission), and WCPFC (Western and Central Pacific Fisheries Commission).

These groups manage tuna fisheries in the Atlantic, Pacific, and Indian oceans. In 2015, more than 4.8 million tonnes of tuna were harvested, as reported in ISSF’s recent Status of the Stocks report.

Harvest strategies are based on science-based frameworks that include guidelines and limits for fishing vessels. The tools for monitoring, control, and surveillance include human observers, satellite vessel monitoring systems, electronic monitoring systems on vessels, and data collection and dissemination.

The ISSF-coordinated joint outreach letter urges the RFMOs to:

  • Develop precautionary harvest strategies, including specific timelines to adopt target reference points, harvest control rules and other elements
  • Where it is not already in place, require 100%observer coverage for all purse seine fishing vessels and all at-sea transshipment activities
  • Identify and sanction non-compliance with the existing mandatory 5% observer coverage requirement for longline vessels
  • Develop and adopt standards for electronic reporting and electronic monitoring, for all major fishing gear types, and modernize vessel monitoring systems
  • Develop science-based recommendations for managingFADs (fish aggregating devices), including for stock assessments
  • Adopt measures for using non-entangling FAD designs, to protect sharks and other non-target species

The letter requests that the above points are addressed in 2017.

The letter’s 83 signatories are:

Ahold Delhaize (Global)

Aldi North (Global)

Aldi South (Global)

American Albacore Fishing Association

American Bird Conservancy

American Tuna

ANABAC

Anova (US)

Anova Seafood, BV

AP2HI

Atunlo

Auchan Retail (Global)

BirdLife International

Bolton

Bumble Bee Seafoods

Carrefour (Global)

Casino (FR)

Caterers Choice (UK)

Chancerelle

Client Earth

Conservation International

Co-op (UK)

Coop Italia (IT)

Coop Trading (All Scandinavia)

Davigel

Edeka (DE)

Environmental Defense Fund

Eroski (ES)

Fishwise

Frinsa

Greencore (UK)

Grupo Conservas Garavilla (Isabel)

Grupo Maritimo Industrial (Grupomar)

Herdez del Fuerte

Horizon Fisheries

IPNLF

ISSF

IUCN SSC Tuna & Billfish Specialist Group

Jealsa

Kroger (USA)

Lidl (Global)

Loblaws Canada

M & J Seafood (UK)

Marks & Spencer (UK)

MDPI

Mercadona (ES)

Migros (CH)

MMP

Monterey Bay Aquarium

Morrisons (UK)

New England Seafood International (UK)

Ocean Brands

Ocean Harvesters Operative

OPAGAC

Orthongel

Pacific Alliance for Sustainable Tuna (PAST)

Pesca Azteca

Pick N Pay (South Africa)

Princes

Procesa

REWE GROUP (Global)

RS Cannery

Sainsbury’s (UK)

Salica

SEAPAC (a subsidiary of Kingfisher)

Sodexo (Global)

Spar (Austria)

Spar (South Africa)

Subway

Sustainable Fish Cities

Sustainable Fisheries Partnership

Tesco

Thai Union/COSI

Thai Union Europe

The Nature Conservancy

Thunnus Overseas Group/Conserveries des Cinq Océans

Tri Marine

Tunago Fishery, Ltd.

Warenverein (DE)

Wegman’s (USA)

Woolworths (South Africa)

Worldwise (UK)

WWF

The International Seafood Sustainability Foundation (ISSF) is a global coalition of scientists, the tuna industry and World Wildlife Fund (WWF) — the world’s leading conservation organization — promoting science-based initiatives for the long-term conservation and sustainable use of tuna stocks, reducing bycatch and promoting ecosystem health. To learn more, visit http://iss-foundation.org/.

This story originally appeared on Seafoodnews.com, a subscription site. It is reprinted with permission.

Catch quota implemented to protect swordfish

November 23, 2016 — A world body of fishing and shipping nations approved a catch quota yesterday to protect the overharvested Mediterranean swordfish, the EU and conservation group Oceana said.

The limit was set at 10,500 tonnes for 2017 at a meeting of the 51-member International Commission for the Conservation of Atlantic Tunas in Vilamoura, Portugal.

It will be reduced by three per cent per year between 2018 and 2022.

“It’s done. Finally, ICCAT on its 50th anniversary moved a step forward on this too long-neglected stock,” Oceana’s Ilaria Vielmini said in the coastal town where the commission held its annual meeting.

Read the full story from AFP at NT News

ABTA: Atlantic Marine Monument Says U.S. Doesn’t Support Its Own Sustainable Fisheries

September 15, 2016 — The following was released today by the American Bluefin Tuna Association, in response to President Obama’s decision to designate a new Marine National Monument off the coast of Cape Cod:

The American Bluefin Tuna Association (ABTA) represents 27,000 commercial, charter/headboat and recreational fishermen who fish for Bigeye, Yellowfin, Bluefin and Albacore tuna. ABTA is deeply saddened to hear of President Obama’s decision today to designate a marine monument in the Northeast Canyons and Seamounts. All of the aforementioned fish species are found and fished by our fishermen within the newly designated monument.

ABTA’s fishermen have the distinction of employing the most sustainable fishing methods of any oceanic fishery in the U.S.  ABTA’s commercial fishery is the U.S.’s only artisanal fishery, as defined by the United Nations Fish and Agriculture Organization (UN FAO) and by the International Commission for the Conservation of Atlantic Tunas (ICCAT). ABTA fishermen catch one fish at a time, using handgear, with negligible bycatch and its commercial fishermen have the highest record of compliance with fishery regulations of any such fishery in the world.

ABTA’s takeaway from the Administration’s decision to designate an Atlantic marine monument:

  1. This decision sends a message to the world that the U.S. does not support its own sustainable fisheries; that the U.S. is more interested in promoting the concept of marine protected areas internationally than it is in protecting its own fishing economy and food supply. Implicit in this action is the message that the U.S. does not trust the body of law that we have created and the democratic institutions we have empowered to enact that law in the stewardship of our oceans.
  1. This decision will most definitely result in the U.S. having greater difficulty in utilizing its fishing quota, as set by ICCAT, for certain species fished in this region; in particular, swordfish. There is a very real threat that the U.S. will have to surrender some or all of its unutilized swordfish quota to another ICCAT-member country who may not maintain sustainable fishing practices. This decision will also result in an unnecessary increase in fish imports.
  1. The proposed prohibition on all forms of fishing in the monument is simply punitive and completely unnecessary. The Canyons and Seamounts region is in very deep water, from 1,500 to 15,000 ft in depth. Much of the fishing in this region uses surface and sub-surface fishing gear, sustainable fishing methods in which the fishing gear never comes into contact with deep sea coral found on the sea floor. Prohibiting these forms of fishing is tantamount to prohibiting commercial airline flights over Yellowstone National Park for fear that trees will be knocked down.
  1. The notion that creating a marine monument will contribute to the sustainability of the marine species found there is a myth. All of the marine species harvested in this region are from healthy fish stocks and are sustainably managed by NOAA. Most of the marine species that are harvested in this region are highly migratory, highly fecund pelagic species whose habitat is the entirety of the tropical, sub-tropical and temperate regions of the Atlantic Ocean and its adjacent seas. These species do not preferentially inhabit this region for long periods of time. They swim in and out of the region constantly during certain months and migrate to the east Atlantic, West Africa or the east coast of South America regularly.

A negative message

Abandoning the open, democratic and thoroughly science-based process by which we undertake to establish protections for important marine attributes in favor of a monument established by executive fiat sends a negative message to those U.S. fishermen and shoreside industries who would needlessly pay for this monument by loss of income. It also sends a negative message to the majority of our fishermen who are committed to adhering to the processes and respect for regulation promulgated in accordance with the Magnuson Stevens Act. The decision is a clear denouncement of the democratic institutions that are charged with safeguarding the public interest as it pertains to oceanic marine matters. U.S. fisheries, in particular those fisheries that are found in the proposed area, are already the most highly regulated such fisheries in the world.

Absent strong, verifiable scientific support for such an action, creating a marine monument based upon vague and unsupported concerns “for the future”, can be likened to such expressions as “better safe than sorry” or “an ounce of prevention is worth a pound of cure”. These are fairly vacuous guidelines for safeguarding the environment and for public policy in general.

David Schalit, Vice President

American Bluefin Tuna Association

ABTA questions efficacy of precautionary approach

WASHINGTON (Saving Seafood) – July 11, 2016 – The American Bluefin Tuna Association (ABTA) has released its position statement on the ‘precautionary approach’ to fisheries management, which the International Commission for the Conservation of Atlantic Tunas (ICCAT) is considering adding to its Convention text.

The precautionary approach, which fisheries expert Dr. Carl Walters criticized in a discussion with CFOOD last month, says that if an action has a suspected risk of causing harm to the public or environment, it is up to the people taking that action to prove it is not harmful.

In its statement, ABTA noted that the precautionary approach is “deeply incoherent” because, while ICCAT “should take precautions against certain speculative dangers,” precaution and inaction also create risk.

“There are conditions in which it can be dangerous to reduce, increase or maintain fishing quota for the following year particularly if [we] take into account another guiding principle: maximum sustainable catch,” ABTA wrote.

While maximum sustainable catch is an unambiguous concept, ABTA wrote, the precautionary approach does not specify the proper conditions for using the approach or the preventative actions to take. Without more specific guidelines, the precautionary approach can be easily abused, ABTA argued.

“Efforts to impose the precautionary approach through regulatory policy will inevitably intend to accommodate competing concerns or, more likely, become a Trojan Horse for ideological crusades,” the statement said.

ABTA concluded by saying that the precautionary approach could by sound policy in certain situations, but a broad framework must first be developed. ABTA suggested creating this framework using guidelines in the UN Fish Stocks Agreement or through ICCAT’s Standing Committee on Research and Statistics’ Working Group on the Precautionary Approach, which last met in 1999.

Read ABTA’s full statement

Environmental Bullies – Conservationists or Agenda-pushers?

March 22, 2016 (Saving Seafood) – Dr. John Sibert, an emeritus professor at the University of Hawaii, has come to the defense of scientists whose research conflicts with the agendas of conservation ideologues. Dr. Sibert specifically targets Carl Safina and others who have painted recent research by Dr. Molly Lutcavage as “controversial.” Dr. Lutcavage’s research, which appeared in the journal Proceedings of the National Academy of Sciences and was featured in NPR, presented evidence that Western Atlantic Bluefin tuna may be more resilient to harvesting than previously thought.

In an article for CFOOD, a University of Washington project chaired by Dr. Ray Hilborn that corrects erroneous stories about fisheries sustainability, Dr. Sibert criticizes environmentalists who resort to personal attacks on researchers whose findings they oppose. Saving Seafood partners with CFOOD to help deliver these facts to the public.

“Instead of attacking the messenger and implying that Lutcavage and her colleagues are industry tools, Safina should have embraced the science, supported tuna conservation, and applied pressure in ICCAT to change its antiquated management. By attempting to smear Lutcavage and her NOAA colleagues, he demeans science in general and those of us who try to apply scientific approaches to resource management in particular,” Dr. Sibert wrote.

Last week, Dr. Lutcavage wrote a piece about her own struggles with environmental bullies.

Dr. Sibert’s full comments are below:

I, like many other scientists, practice my profession with the expectation that my work will be used to improve management policies. However, scientists who choose to work on subjects that intersect with management of natural resources sometimes become targets of special interest pressures. Pressure to change or “spin” research results occurs more often than it should. Pressure arrives in many forms— usually as phone calls from colleagues, superiors, or the media; the pressure seldom arrives in writing.

I have had a long career spanning several fields and institutions and have been pressured to change my views on restriction of industrial activities in intertidal zones in estuaries, on the necessity of international tuna fisheries management agencies, on the limited role of commercial fishing in the deterioration of marine turtle populations, on the lack of accuracy and reliability of electronic fish tags, and on the inefficacy of marine protected areas for tuna conservation.

My most recent experience with pressure came from a stringer who writes for Science magazine. Some colleagues and I had just published a paper that analyzed area-based fishery management policies for conservation of bigeye tuna. Although the paper was very pessimistic about the use of MPAs for tuna fishery management, this particular stringer contacted me about MPAs. We had an exchange of emails in which he repeatedly tried to spin some earlier results on median lifetime displacements of skipjack and yellowfin tuna into an argument supporting creation of MPAs. We then made an appointment to talk “face to face” via Skype. His approach was to play word games with my replies to his questions in order to make it seem that my research supported MPAs. I repeatedly explained to him that our research showed that closing high-seas pockets had no effect whatsoever on the viability of tuna populations and that empirical evidence showed that the closure of the western high seas pockets in 2008 had in fact increased tuna catches. We hung up at that point, and I have no idea what he wrote for Science.

When critics run out of fact, some resort to personal attack. During discussions about turtle conservation in the early 2000s, an attorney for an environmental group told a committee of scientists that we were in effect a bunch of fishing industry apologists with no knowledge of turtles or population dynamics. More recently, my friend and collaborator, Molly Lutcavage was recently subject of a personal attack by Carl Safina after she and her colleagues published an important discovery of a new spawning area for Atlantic Bluefin Tuna. This discovery ought to push the International Commission of the Conservation of Atlantic Tuna to abandon its simplistic two stock approach to management of ABFT. (Whether ICCAT will actually change its approach is another question.) Safina made the outrageously false assertion that the authors’ “… main concern is not recovery, not conservation, but how their findings can allow additional exploitation.”   Instead of attacking the messenger and implying that Lutcavage and her colleagues are industry tools, Safina should have embraced the science, supported tuna conservation, and applied pressure in ICCAT to change its antiquated management. By attempting to smear Lutcavage and her NOAA colleagues, he demeans science in general and those of us who try to apply scientific approaches to resource management in particular.

Read the commentary at CFOOD

 

Environmental Bullies: How Conservation Ideologues Attack Scientists Who Don’t Agree With Them

March 11, 2016 — The following is an excerpt from a commentary from Dr. Molly Lutcavage, the head of the Large Pelagics Research Center in Gloucester, Massachusetts. It was originally published on Medium :

Back in the 90s, bluefin fishermen said that spotter pilots could see, in a single day, as many adult bluefin that were supposed to exist in the entire western Atlantic in just a few surface schools in the Gulf of Maine alone. No federal fisheries scientists would fly to validate the fishermen’s observations, so Dr. Scott Kraus, director of the right whale research group and whale aerial surveys, stepped in to find out. And he hired me to run the surveys after an inquiry about his sea turtle data. I’d completed an oceanography PhD, two postdocs, and recently left a job in the Dept. of Interior as an endangered species scientist to get back to research, which I loved. I had been studying leatherbacks, a warm bodied turtle, and bluefin tuna were a warm bodied fish. And incredibly interesting. My UBC postdoc supervisor, Dr. David R. Jones, was an expert on their blood. And there were huge gaps in biological understanding – in other words, a scientific frontier to explore!

In his clumsy communication to discredit our survey work, Carl Safina made no attempt to confirm the scientific credentials of the scientist running the study (me), nor her highly respected collaborator, Dr. Scott Kraus. In fact, by doing our job as scientists, using aerial survey methods to investigate real-time, surface abundance of bluefin schools, we were disrupting the ocean conservation group’s efforts, especially that of Safina, to list Atlantic bluefin tuna as an endangered species. Apparently, by whatever means necessary. The published spotter survey results eventually provided independent observations that rebutted Safina’s portrayal of western Atlantic bluefin as an endangered species down to a few thousand individuals. The study established the local assemblage as larger than one hundred thousand giant bluefin, at the surface alone.

Since our first research projects over 25 years ago, my lab and our collaborators and students have built a diverse body of peer reviewed science covering extensive aspects of the biology, life history, physiological ecology, reproduction, diet, oceanographic associations, and fisheries dynamics of Atlantic bluefin tuna. We published over 75 research studies on western bluefin. Most of it was new, or challenged the status quo of bluefin biology used in stock assessment. We documented a lower age at maturity, extensive, Atlantic-wide mixing, complex annual migration patterns, and effects of prey dynamics and ocean conditions on their movements. This holistic body of research showed the western Atlantic bluefin population to be far more resilient and larger than that being represented by some NGO’s. Yet this substantial scientific body of evidence, most of it noted by historic studies by Frank Mather and Peter C. Wilson, has been conveniently ignored by those with ideological agendas, even today.

Enviro Bullies rarely confront their targets face to face. Since the 1990’s, they’ve made pretty impressive attempts to mislead about bluefin science. And to influence US fisheries managers, politicians and the direction of research funding, all the way up to the White House. We stuck to our research goals, but when Congressional earmarks funding the Large Pelagics Research Center (LPRC), and its role model, the Pacific Fisheries Research Program, went away, we faced vastly downsized research budgets. Actually, just when the Centers had amassed a substantial body of credible, cutting edge fisheries science, and established their true worth, both pelagic fisheries science Centers went off the cliff, into real extinction. Meanwhile, major funding began streaming in to some ocean-focused NGO’s, and their spokesperson scientists.

In 2013, former students, collaborators and I witnessed the Pew Oceans Campaign and partners mislead, in their press releases and statements to US and Canadian fisheries managers, experts’ consensus regarding the status of the Atlantic bluefin population in Pews Fact Sheet representation of Best Available Science. And more specifically, that LPRC’s peer reviewed research that challenged their take away message, that the Atlantic bluefin population trajectory was downward, and that they were in danger. They labelled our work as well as consensus science from the International Commission for the Conservation of Atlantic Tunas (ICCAT), as “unsubstantiated hypotheses”. Amanda Nickson, director of the Pew Charitable Trusts’ Bluefin Campaign, phoned from Vancouver to berate my colleagues and I for responding to the Pew Fact Sheet, which dramatically misrepresented science. We had corrected it with our own fact sheet, and they were not happy to be called out by credentialed bluefin experts.

Maybe it’s because National Geographic’s Wicked Tuna reality show, on roll out, put me up against Safina’s video blurb about the overfished, endangered bluefin on the show’s website. What can you do when a lauded environmental writer, one with a PhD in seabird ecology, that receives accolades and is often the go to authority on Atlantic bluefin for the New York Times, National Public Radio, high media profile journals Science and Nature (even though he’s not exactly running a research lab, is he?), lacks the ethics most of us practice when we conduct science. To claim to be an expert where you are not, to mislead the public, to falsely disparage those that don’t support your ideology, to repeatedly and falsely allude to a woman scientist being bought by fishermen, “in their pockets”, whatever works, when his ideology or views expressed in books or blogs or lectures are shown to be false. Is this what conservation leadership has become? Incidentally, another blatant attempt to disparage and mislead was accomplished by Pew and their scientists in Quicksilver, by Kenneth Brower, published in National Geographic Magazine March 2014 story on Atlantic bluefin tuna.

The quotes looks pretty familiar:

Tuna science, always politicized, has recently become much more so. As it is no longer possible for ICCAT to simply ignore scientific advice, there is now an effort to massage the science. “There are inherent uncertainties about these stock assessments,” Amanda Nickson, director of global tuna conservation at the Pew Charitable Trusts, told me. “We’re seeing a mining of the areas of uncertainty to justify increases in quota.”

Industry-funded biologists propose that there might be undiscovered spawning grounds for Atlantic bluefin. It is possible, of course, but there is no real evidence for the proposition. The idea seems awfully convenient for an agenda favoring business as usual.

Wow, “awfully convenient for an agenda”, in this Nat Geo story repeating Pew’s positions and only their scientists that support it, Drs. Barbara Block and Safina. So now we have even more evidence that their representations are wrong. Jee, National Geographic Society Research and Exploration had actually funded two of my research projects. Let’s see if they print a correction.

Here we are again, Carl Safina. Yes, you’re certainly not the only enviro bully out there, not the only one wrong again, but this time, I’m calling you out. Let the ocean conservation community represented by Pew tuna campaigns and their chosen scientists see the latest, peer reviewed science finding on Atlantic bluefin tuna spawning areas in the Proceedings of the National Academy of Science, early edition on 7 March 2016 “Discovery of a new spawning ground reveals diverse migration strategies in Atlantic bluefin tuna (Thunnus thynnus)” by Richardson and coauthors.

Read the full opinion piece at Medium

Read more about some of the recent findings of scientists from NOAA and the Large Pelagics Research Center at NPR

 

Scientists Find Possible New Spawning Area for Western Atlantic Bluefin

SEAFOODNEWS.COM [SeafoodNews]  By Peggy Parker — March 8, 2016 — Scientists from NOAA’s National Marine Fisheries Service (NOAA Fisheries) and the University of Massachusetts Boston have found evidence of Atlantic bluefin tuna spawning activity off the northeastern United States in an area of open ocean south of New England and east of the Mid-Atlantic states called the Slope Sea.

The findings suggest that the current life-history model for western Atlantic bluefin may overestimate age-at-maturity. If so, the authors conclude that western Atlantic bluefin may be less vulnerable to fishing and other stressors than previously thought.

Prior to this research, the only known spawning grounds for Atlantic bluefin tuna were in the Gulf of Mexico and the Mediterranean Sea. The evidence for a new western Atlantic spawning ground came from a pair of Northeast Fisheries Science Center (NEFSC) research cruises in the Slope Sea during the summer of 2013.

“We collected 67 larval bluefin tuna during these two cruises, and the catch rates were comparable to the number collected during the annual bluefin tuna larval survey in the Gulf of Mexico,” said David Richardson of NEFSC, lead author of this study. “Most of these larvae were small, less than 5 millimeters, and were estimated to be less than one week old. Drifting buoy data confirmed that these small larvae could not possibly have been transported into this area from the Gulf of Mexico spawning ground.”

Larvae collected during the cruises were identified as bluefin tuna through visual examination and genetic sequencing. To confirm the identification, larvae were sent to the Alaska Fisheries Science Center laboratory in Juneau, where DNA sequences verified that the larvae were Atlantic bluefin tuna.

A single bluefin tuna can spawn millions of eggs, each of which is just over a millimeter in diameter, or the size of a poppy seed. Within a couple of days these eggs hatch into larvae that are poorly developed and bear little resemblance to the adults. Larval bluefin tuna can be collected in plankton nets and identified based on their shape, pigment patterns and body structures.

High-value Atlantic bluefin tuna has a unique physiology that allows it to range from the tropics to the sub-arctic. As a highly migratory species, Atlantic bluefin tuna is assessed by the Standing Committee on Research and Statistics (SCRS) of the International Commission for the Conservation of Atlantic Tunas (ICCAT) as distinct eastern and western stocks separated by the 45 degree west meridian (or 45 w longitude). The U.S. fishery harvest from the western Atlantic stock is managed through NOAA Fisheries’ Atlantic Highly Migratory Species Fishery Management Plan.

For many years, global overfishing on this species was prevalent, resulting in substantial population declines. Recent international cooperation in managing catches has contributed to increasing trends in the abundance of both the eastern and western management stocks. The western stock, targeted by U.S. fishermen, is harvested at levels within the range of the SCRS’ scientific advice.

This research may change the long-held assumption that bluefin tuna start spawning at age 4 in the Mediterranean Sea and age 9 in the Gulf of Mexico. Electronic tagging studies begun in the late 1990s showed that many bluefin tunad, did not visit either spawning ground during the spawning season, despite being large enough to be of spawning age. This led some to say that these larger fish were not yet spawning, and that the age-at-maturity for western Atlantic bluefin tuna was 12-16 years, rather than 9 years, as was assumed in the stock assessment.

A consistent supporter of an alternate hypothesis was Molly Lutcavage at the Large Pelagics Research Center of the University of Massachusetts Boston. She believed tuna that did not visit the Gulf of Mexico and Mediterranean Sea were spawning elsewhere. Her research team used electronic tagging data from the Lutcavage lab to present an alternate model of western Atlantic bluefin tuna spawning migrations.

Only the largest bluefin tuna, those over about 500 pounds, migrate to the Gulf of Mexico spawning area. After these fish exit the Gulf of Mexico, they swim through the Slope Sea rapidly, on their way to northern feeding grounds. On the other hand, smaller bluefin tuna, ranging in size from 80 to 500 pounds, generally spend more than 20 days in the Slope Sea during the spawning season, a duration consistent with spawning. Lutcavage is a co-author on the study.

“Last year, we demonstrated using endocrine measurements that bluefin tuna in the western Atlantic mature at around 5 years of age. That study, and ones before it, predicted that these smaller fish would spawn in a more northerly area closer to the summertime foraging grounds in the Gulf of Maine and Canadian waters,” Lutcavage said. “The evidence of spawning in the Slope Sea, and the analysis of the tagging data, suggests that western Atlantic bluefin tuna are partitioning spawning areas by size, and that a younger age at maturity should be used in the stock assessment.”

Researchers also found that individual tuna occupy both the Slope Sea and Mediterranean Sea in separate years, contrary to the prevailing view that individuals exhibit complete fidelity to a spawning site. Reproductive mixing between the eastern and western stocks may occur in the Slope Sea and the authors contend that population structure of bluefin tuna may be more complex than is currently thought.

“Past analyses of Atlantic bluefin tuna population structure and mixing between the western and eastern Atlantic stocks may need to be revisited because they do not account for the full spatial extent of western Atlantic spawning,” Richardson said. “So much of the science and sampling for Atlantic bluefin tuna has been built around the assumption that the Gulf of Mexico and Mediterranean Sea are the only spawning grounds. This new research underscores the complexity of stock structure for this species and identifies important areas for future research.”

The authors expect these findings could potentially lead to a lower estimated age-at-maturity, a critical component of the stock assessment, and could reopen consideration of the nature and level of mixing between the western and eastern Atlantic populations. This new information will be considered along with other pertinent research as part of the regular ICCAT SCRS stock assessment process.

The findings were published yesterday in the Proceedings of the National Academy of Sciences.

The scientific team for this study comprises researchers from NOAA’s Northeast Fisheries Science Center (NEFSC) and Alaska Fisheries Science Center (AFSC), the Large Pelagics Research Center at the University of Massachusetts Boston, the School of Marine Science and Technology at the University of Massachusetts Dartmouth, and NOAA’s Greater Atlantic Regional Fisheries Office (GARFO). The sampling for this study was supported by NOAA, the Bureau of Ocean Energy Management, and the US Navy through interagency agreements for the Atlantic Marine Assessment Program for Protected Species (AMAPPS).

This story originally appeared on SeafoodNews.com, a subscription site. It has been reprinted with permission

Jersey Shore Fishing: Ray Bogan Appointed an ICCAT Commissioner

February 25, 2016 — Ray Bogan, who chose the law as his profession, rather than joining the famed family party boat business in Brielle, has been appointed as the U.S. recreational fishing commissioner to the International Commission for the Conservation of Atlantic Tunas (ICCAT).

Ray Bogan, whose law office is in Point Pleasant Beach and is also a captain, has been involved for many years in all aspects of fisheries conservation. He’s well-qualified to handle the new position as he’s been monitoring ICCAT activities for decades. In some cases, the overfishing of tunas in Europe and Africa may also impact local abundance. Though the title implies that ICCAT only manages tunas, they also develop conservation plans for other highly migratory fisheries. Since most of the rest of the world is only concerned with commercial fishing, ICCAT had to be dragged into protecting species with lesser commercial value. After being appointed to the first Mid-Atlantic Fishery Management Council, I became that council’s representative to the Southeast Council in establishing tuna regulations within our then new 200-mile limit before the National Marine Fisheries Service (NMFS) later took over highly migratory species management. At one meeting, an U.S. marine biologist said ICCAT wouldn’t do anything to conserve blue marlin until there were only two left – and both were males!

It’s not quite that bad now, but recreational fishing still takes a back seat at ICCAT. The bluefin tuna “conservation” regulations result in such minimal quotas for school bluefins that the cost of pursuing that recreational fishery can hardly be justified, while spawning giants are targeted with high commercial daily boat limits in order to fill quotas.

Read the full story at NJ.com

DAVID SCHALIT: Report from ICCAT

December 7, 2015 — The following is a commentary submitted to Saving Seafood by David Schalit, the Vice President of the American Bluefin Tuna Association:

The International Commission for the Conservation of Atlantic Tunas (ICCAT) used to be the regional fishery management organization everybody loved to hate.  Its dysfunctionality was legendary.  ICCAT became famous because it is the regional fishery management organization responsible for Atlantic bluefin tuna, the famously “iconic” and “charismatic” tuna stock that has been the subject of intense media interest for a very long time and the only tuna species to star in its own cable television series. 

ICCAT’s Problem

In the mid-late 1990’s, due to concerns expressed by ICCAT scientists about the status of Atlantic bluefin, ICCAT began adopting measures to limit harvest of both east and west stocks.  Only the west Atlantic harvesters heeded the advices of ICCAT scientists.  European Union fishing countries and other eastern harvesters who target east Atlantic bluefin weren’t listening.  During the next several years the east Atlantic stock was subject to consistent and increasing overfishing, illegal fishing and unreported fishing.  In 2007 – the worst year on record for east Atlantic bluefin – ICCAT scientists estimated that catch in the east Atlantic could be as high as 60,000 MT, almost twice the allowed quota.  

As a consequence, “the plight of the Atlantic bluefin” became the subject of ongoing public relations campaigns by numerous environmental organizations.  Annual meetings of ICCAT in the years leading up to 2008 developed a circus atmosphere, consisting of a full complement of delegates, a large number of industry representatives, media and environmental observers as well as environmental activists who regularly demonstrated outside of the meeting venue.  As a result, ICCAT meetings were regularly covered by media worldwide.  

ICCAT’s Redemption

ICCAT finally began to redeem itself during its 2008 meeting when it mustered the political will to cease overfishing and begin the process of rebuilding east Atlantic bluefin stock.  Today, both east and west Atlantic bluefin stocks have become a fishery management success story. 

The New Problem

However, ICCAT may be returning to its old ways.  This time, the problem is with Atlantic bigeye tuna.  ICCAT scientists turned in a stock assessment on Atlantic bigeye this October indicating that the stock is presently overfished and with overfishing presently taking place.  ICCAT scientists urged the adoption of conservation measures to immediately address this problem.  Last week, the 24th annual meeting of ICCAT was held in Malta.  Unfortunately, when the meeting came to a close on November 17, ICCAT had failed to achieve meaningful conservation measures for Atlantic bigeye tuna.  Sound familiar?

What Were the Objectives?

The scientists recommended steps that would lead to increasing “future chances that the stock will be at a level that is consistent with the convention objectives.” The primary means available to ICCAT for achieving this were a reduction in harvesting of mature bigeye in the central/south Atlantic and a reduction in bycatch of juvenile bigeye in the Gulf of Guinea skipjack fishery.  Neither of these goals was met.

Major Harvesting Forces

The Atlantic bigeye tuna fishery consists of 8 major harvesters and 11 minor harvesters.  The eight major harvesters (China, EU, Ghana, Japan, Panama, Philippines, Korea and Chinese Taipei) are, in total, a fleet of 659 longline vessels plus assorted “support vessels”, mostly fishing in the equatorial Atlantic, in deep water, for mature bigeye.  The EU alone has 269 vessels in this fleet, and Japan has 245.  

In addition, there are 51 purse seine vessels permitted by ICCAT to operate in the Gulf of Guinea skipjack fishery that are responsible for significant bycatch of juvenile bigeye and yellowfin.  Of those 51 vessels, the EU (France and Spain) is the largest fleet, with 34 vessels.

To put this in perspective, in 2014, the 8 major harvesters were responsible for over 53,000 MT of bigeye catch, whereas the 11 minor harvesters, including the U.S. and Brazil, were responsible for just under 14,000 MT.  (The U.S. reported 800 MT of catch in 2014.)  And there is a great deal of uncertainty regarding the level of mortality on juvenile bigeye in the purse seine fishery. 

The Negotiations

During the negotiations at last week’s meeting, the U.S., Brazil and a few other minor harvesters squared off against the very well prepared forces of the EU and Japan who had the backing of their formidable fishing industries.  It is said that those who have “the most skin in the game” tend to prevail and so, notwithstanding the efforts of the U.S., Brazil and others to reduce fishing effort by these major harvesters, the EU, Japan and the 6 other major harvesters were the winners and Atlantic bigeye tuna was the loser.

Curiously, the major harvesters can make the claim to have reduced the overall TAC.  Atlantic bigeye harvesting is presently governed by an Atlantic-wide TAC from which each of the 8 major harvesters are given a fixed, “not to exceed” individual TAC. Last week, the major harvesters agreed to reduce their combined allowed TAC from its present level of 79,000 MT to to 58,000 MT.  This gives the distinct impression that significant conservation measures were taken.  However, landings averaged over the last 5 years are below 58,000 MT.  In actual fact, this agreement allows these harvesters another 9,000 MT above their reported landings of 2014.  Consequently, no actual cuts in catch were made. 

The Fiasco in the Gulf of Guinea

The problem in the Gulf of Guinea is an issue that has plagued ICCAT since the 1990s. ICCAT has made various attempts, beginning in the late 90’s, to reduce bycatch of juvenile bigeye and yellowfin typically weighing no more than 3-6 lbs, in the Gulf of Guinea purse seine skipjack fishery.  According to the scientists, none of these attempts yielded any reduction in bigeye bycatch.  Why?

At each ICCAT meeting in which this bycatch problem was addressed, the EU has tendered its own fully detailed proposal to address the problem.  In each instance, their proposal involved a variation on the concept of a time/area closure in the Gulf of Guinea for a fixed period during each fishing season.  Since the EU purse seine fleet is the dominant force in the Gulf of Guinea skipjack fishery, it is difficult to imagine why ICCAT would have ever seriously considered an EU proposal.  Clearly, the EU’s interests are best served by thwarting any conservation action that would have a negative effect on its seining activities in the Gulf.  However, in each instance, ICCAT has adopted the EU’s proposal.  And in every instance, ICCAT scientists subsequently found that these closures did not result in the reduction of bycatch.  Today, these facts are well known to ICCAT member countries.  So, why did ICCAT, in last week’s meeting, adopt a new EU-authored solution to the problem of bigeye bycatch that is likely to achieve nothing?  This, too, is reminiscent of the “old” ICCAT.

Final Outcome

We can point to other successes that came out of the ICCAT meeting such as significant progress on Convention amendments, eBCD and the development of harvest control rules; all important issues.  But if ICCAT fails in its primary task – the “conservation of Atlantic tunas” – all other successful initiatives are diminished in importance because of that failure. 

Fortunately for ICCAT, it has a chance to partially redeem itself at next years’ meeting, when it will address Atlantic yellowfin tuna, a stock that has some of the same problems as Atlantic bigeye.  Unfortunately, ICCAT will have to wait until 2018 to have a chance to again address the issue of conservation of bigeye tuna.

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