Saving Seafood

Council Holds First Virtual Fishers Forum Highlighting Fishermen Contributions to Science and Management

September 1, 2020 — The following was released by the Western Pacific Regional Fishery Management Council:

More than 100 people participated in the Western Pacific Regional Fishery Management Council’s first virtual Fishers Forum and review of Hawaiʻi small-boat fisheries management Aug. 27, 2020. The theme for the forum was fishermen, particularly non-commercial fishermen, contributing to the knowledge base for fishery scientists and managers. Scientists highlighted research projects that depend upon fishermen input and collaboration to be successful. Council staff informed participants about Hawaiʻi small-boat fishery management regulations currently in place and discussed future options for mandatory permitting and reporting.

Hawaiʻi small-boat fishery management and other matters will be considered by the Council’s Scientific and Statistical Committee when it meets Sept. 9-10, 2020, by web conference (Webex) and during the Council meeting Sept. 15-17, 2020, also by web conference with host sites at Cliff Point, 304 W. O’Brien Dr., Hagatna, Guam; Hyatt Regency Saipan, Royal Palm Ave., Micro Beach Rd., Saipan, CNMI; and Department of Port Administration, Airport Conference Rm., Pago Pago International Airport, Tafuna Village, American Samoa. Instructions on connecting to Webex, agendas and briefing documents will be posted at www.wpcouncil.org/meetings-calendars.

Fishermen Helping Science

Molly Lutcavage, Pacific Islands Fisheries Group (PIFG) and Large Pelagics Research Center, demonstrated how fishermen helped to identify tuna movement patterns through fish tagging, which is critical to answering many scientific and management questions. Cassie Pardee and John Wiley, Poseidon Fisheries Research, shared how biosamples provided by fishermen, primarily at fishing tournaments, contributed to the determination of coral reef fish life history characteristics such as life span and reproductive age and size. Justin Hospital, National Marine Fisheries Service (NMFS) Pacific Islands Fishery Science Center (PIFSC), emphasized that fishermen’s responses to socioeconomic surveys is critical to support effective fisheries management because it helps NMFS better understand the fishing community and its motivations and the benefits and costs of regulations, among other issues.

Review of Hawaiʻi Small-Boat Fisheries Management

Council staff gave an overview of Hawaiʻi small-boat fisheries regulations in effect and current sources of fishery data. Non-commercial fishermen are not required to report their fishing effort, catch or participation, resulting in the bulk of the data used in management decisions coming from commercial data logbooks and non-commercial estimates derived from surveys and models, which are highly uncertain. This uncertainty may lead to future possible allocation management measures between non-commercial and commercial sectors.

The Magnuson Stevens Act, under which the Council operates, requires the regular review of fishery ecosystem management plans to evaluate their effectiveness. During his opening remarks at the forum, Ed Watamura, Council vice chair for Hawaiʻi, asked listeners to imagine “fishery regulations that are created and never revisited, never reviewed and never taken off the books, even though they are not working and not enforceable.” In October 2019, the Council directed staff to review Hawaiʻi small-boat fisheries management. The overall process of reviewing regulations includes many steps such as the public scoping meetings held in February 2020 across the state that pointed at the need for non-commercial fishery data, and developing options for mandatory permitting and reporting.

The options presented ranged from taking no action, continuing to rely on existing data gathering methods and potentially leading to impacts from quotas and international management, to mandatory reporting that would provide the data needed for science and management in federal waters but would require fishermen to apply for permits or provide catch reports, something that would be unfamiliar to them.

Since the late 1980s and early 1990s, the Council has worked to resolve conflicts between longline vessels and small-boat fisheries due to overlapping fishing grounds and effort. Longliners from the Gulf of Mexico and the Atlantic Ocean traveled as close as three miles out from the main Hawaiian Islands to set their lines. In response, the Council initiated 50 and 75-mile longline exclusion zones.

Several forum participants expressed concern about the possibility of removing the longline exclusion area, while others echoed the need for more fishery data, asked about plans for additional fish aggregating devices and encouraged the Council to focus their efforts on marketing and promoting local, fresh seafood.

Massachusetts: UMass placing sustainable fisheries professor at Hodgkins Cove

December 21, 2017 — The University of Massachusetts at Amherst embarked on recasting the role of its Gloucester Marine Station at Hodgkins Cove by hiring Gloucester resident Katie Kahl to serve as the liaison between research elements at the school and the Cape Ann community.

The university’s School of Earth and Sustainability is set to formally announce the appointment of Kahl on Thursday to the newly created position of extension assistant professor in sustainable fisheries and coastal resilience.

“I’m really excited and can’t wait to start,” Kahl said Wednesday. “This is really a great opportunity for the university to re-imagine its role at the Gloucester Marine Station.” Kahl’s mission, which begins Jan. 2, is a new one for the university’s research facility.

The university announced last January that it was establishing a permanent, full-time extension faculty position at the Gloucester Marine Station as the focal point for determining the future role of the facility.

Most recently, it housed the university’s Large Pelagics Research Center, which was nicknamed the “Tuna Lab.” Under the guidance of Molly Lutcavage, the center did internationally groundbreaking research on giant bluefin tuna and other highly migratory pelagic species.

Read the full story at the Gloucester Times

 

Tuna lab leaving Gloucester, Mass.

Lutcavage, colleagues to work out of UMass Boston

October 6, 2017 — For the first time in almost seven years, the highly-regarded Large Pelagics Research Center affiliated with the University of Massachusetts no longer has a Gloucester address.

The center, which has performed groundbreaking and internationally acclaimed research on the spawning habits and habitats of Atlantic bluefin tuna, closed up shop Thursday at its most recent home — the Americold-owned building at 159 E. Main St. in East Gloucester.

Americold has been actively shopping the site for months and recently informed the center it would have to vacate its office space by the end of October. Molly Lutcavage, the founder and executive director of the center, and Tim Lam, an assistant research professor, didn’t bother waiting until the end of the month.

“It’s sad to think that we won’t have a Gloucester presence anymore,” Lutcavage said. “For now, I guess we’ll be working out of our houses and garages.”

The center has been forced to navigate some rough seas in the past few years, changing its affiliation within the University of Massachusetts system and being forced out of its original facility at Hodgkins Cove, where it had been housed since 2011.

Read the full story at the Gloucester Times

Fish fight: Scientists battle over the true harm of mercury in tuna

March 6, 2017 — Molly Lutcavage thought she had a deal. For more than a decade, she had collected hundreds of tissue samples from bluefin tuna in hopes of settling a question that has long vexed pregnant women and the parents of young children: Should they eat the big fish, a beneficial source of protein and fatty acids? Or did mercury contamination make them too dangerous?

Lutcavage hoped to test the theory that selenium, a key chemical found in tuna, prevents mercury from being transferred to the people who eat them and that, therefore, the fish are safe to eat. So she gave her hard-won samples to a colleague, Nick Fisher, to analyze in his lab.

But Fisher, it seems, didn’t have as much interest in Lutcavage’s selenium theory. Two years later, he produced a study focused almost exclusively on his own hypothesis: that lowering pollution emissions from power plants reduced the levels of mercury in bluefin tuna.

Lutcavage was furious, and the two scientists went to war.

“We kept fighting on this,” said Lutcavage, a researcher at the University of Massachusetts at Boston. “I feel that the paper didn’t advance the issue whatsoever on this divide between scientists over methylmercury. I can’t tell you how much [my colleagues and I] agonized over taking our names off the paper.”

Read the full story at the Washington Post

Riding with sailfish to Northwest Atlantic Ocean hotspots

December 2nd, 2016 — Captain Mendillo notices the increased excitement among the frigate birds, a sure sign that the mass of predators and prey is moving towards the surface. A respected and successful sailfish captain, Anthony is accompanied by Dr Molly Lutcavage of the Large Pelagics Research Center and Dr Guy Harvey of the Guy Harvey Ocean Foundation. Together, they hope to initiate an exploration into the migration patterns and ecological preferences of sailfish. Each fish will be outfitted with a popup satellite tag (PSAT), a device that will allow researchers a prolonged glimpse into the habits of this species.

Below the surface the sailfish circle the sardine mass, charging through the center and picking off individuals that stray to the outskirts. The predators use their bills to slash the six-inch long prey, stunning and swallowing the mangled baits. The entire attack is coordinated not chaotic, with each move communicated through a complex array of fin postures and body coloration. Before rushing the sardines, each sailfish lights up with streaks of iridescent blue, gold, silver and green flashing down its flank. They charge with fins recessed along the body, perfectly streamlined, until hitting the school when their dorsal and pectoral fins snap open, scaring the sardines into a tighter mass.

The baitfish are now within reach of the surface. Frigate birds crash through the sardines looking awkward and distressed diving underwater. Caught between the sailfish and the surface, there is no chance of escape. The onslaught methodically continues until the last sardine has been consumed.

Read the full story at Medium

Tagging Ahi Tuna in the Western Pacific

July 5, 2016 — A respected research professor, scientist and part-time resident has been on Kauai for several weeks coordinating the latest phase of a tuna tagging project launched on Kauai and the Big Island three years ago.

Dr. Molly Lutcavage is a research professor at the University of Massachusetts Boston’s School for the Environment. She is also director of the Large Pelagic Research Center and is renowned for her extensive work with the Atlantic bluefin tuna fishing community.

The Ahi Satellite Tagging Project of the Pacific Island Fisheries Group is a joint venture that uses state-of-the art technology and partners fisheries organizations, policy makers and local fishermen in the effort to gather much-needed baseline data on ahi and other pelagic fish that live and migrate in waters surrounding the main Hawaiian islands and beyond.

“There’s very little information on these patterns for ahi in this region,” Lutcavage said.

“Most of PSAT or data logging tags on ahi were deployed in the eastern and western Pacific, so the Hawaiian islands remain a ‘data poor’ area as far as high-tech tag results,” she added.

Last week, six large yellowfin tuna (ahi) were tagged with pop-up satellite tags and released in waters off Kauai. If all goes well, the tags will collect data that will help identify their migration routes and behavior for one year, Lutcavage said.

Read the full story at the Garden Island

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

 

How In Trouble Are Bluefin Tuna, Really? Controversial Study Makes Waves

March 9, 2016 — Bluefin tuna have been severely depleted by fishermen, and the fish have become a globally recognized poster child for the impacts of overfishing. Many chefs refuse to serve its rich, buttery flesh; many retailers no longer carry it; and consumers have become increasingly aware of the environmental costs associated with the bluefin fishery.

But a group of scientists is now making the case that Atlantic bluefin may be more resilient to fishing than commonly thought — and perhaps better able to rebound from the species’ depleted state. In a paper published Monday in the journal Proceedings of the National Academy of Sciences, the researchers suggest that fishery managers reassess the western Atlantic bluefin’s population, which could ultimately allow more of the fish to be caught.

The 10 co-authors, most of whom are scientists with the National Oceanic and Atmospheric Administration, say they’ve all but confirmed that bluefin tuna spawn in an area of the Atlantic Ocean previously suspected but not known to be a breeding ground. Not only that; the tuna spawning in this area off the Atlantic Coast are much younger and smaller than the age and size at which it was previously believed the fish become sexually mature, according to the scientists.

This, their paper claims, would make the western Atlantic bluefin tuna “less vulnerable to overexploitation and extinction than is currently estimated.”

But the study is controversial. Several tuna researchers we spoke with warned that the results are preliminary, and it’s much too soon to use them to guide how fisheries are managed

Read the full story from 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