Saving Seafood

‘Wild’ Salmon May Be Straight From the Farm, NY Report Finds

December 17, 2018 — That wild sockeye salmon in the refrigerated aisle may be straight from the fish farm, New York’s attorney general said in a report released Friday.

The report from Attorney General Barbara Underwood found that more than one-fourth of the seafood her office sampled in a statewide supermarket survey was mislabeled, typically as a more expensive or more sustainably fished species.

“We’re taking enforcement action, and consumers should be alert and demand that their supermarket put customers first by taking serious steps to ensure quality control at their seafood counters,” Underwood said.

The report was based on DNA testing of fish samples performed by the Ocean Genome Legacy Center, an academic laboratory at Northeastern University.

It found that farmed salmon was frequently sold as wild, and fish sold as red snapper or lemon sole were more often different varieties.

The investigation is not the first to uncover fish fraud.

A 2017 study from researchers at the University of California, Los Angeles and Loyola Marymount University found that almost half the sushi from 26 Los Angeles restaurants that they tested between 2012 and 2015 was mislabeled.

An Associated Press investigation into seafood fraud published in June linked one national fish distributor to widespread mislabeling and other deceitful practices.

Read the full story from the Associated Press at U.S. News

Cape Cod researchers use robots to monitor red tide

June 4, 2018 — Leaning over the side of a small skiff in Salt Pond, Woods Hole Oceanographic Institution researcher David Kulis shook the excess water out of a plankton net, then emptied the contents into a water bottle.

The gold tint to the water, he said, was likely Alexandrium, single-cell algae that produce a powerful neurotoxin. When concentrated in shellfish meat that feed on algae, the toxin can paralyze respiratory muscles in humans, a condition known as paralytic shellfish poisoning, which can be fatal.

Kulis and Northeastern University intern Taylor Mannes were using the tools plankton researchers had relied on for decades: a windsock-shaped net, with fine mesh to capture the single-celled organisms, and a Niskin bottle, originally developed in 1894 for polar research to retrieve samples at discrete depths. Lowered by hand to marks on a line corresponding to various depths, its opening is closed by sliding a lead weight down the line.

But with human health and a burgeoning shellfish and aquaculture industry in the balance, red tide research has gone decidedly high-tech. Sophisticated instruments are now deployed offshore in the Gulf of Maine and at inshore sites like Salt Pond in North Eastham.

Salt Pond is a natural laboratory, said Michael Brosnahan, a red tide researcher at WHOI. It already has a native population of red tide cells that survive the harsh New England winter as hardened cysts on the bottom of the pond. The incoming tide also pushes additional cysts from the larger marsh down a narrow creek and deposits them in deeper water in the pond, beyond the reach of the outgoing tide.

Red tide algae produce food through photosynthesis, and when the cysts hatch in the spring, they swim up into sunlit waters between five feet and eight feet deep. They remain at depths below the outlet creek channel, and relatively few of the free swimming cells are swept back out into the marsh by the tide.

Read the full story at the Cape Cod Times

Fishing Partnership Support Services: Pass a price on carbon to protect fisheries and livelihoods

July 31, 2017 — A few years ago, scientists, fishermen and fishing managers concluded that cod stocks were rebuilding off the coast of Massachusetts. This understanding led ground fishermen (those who catch cod and other groundfish) spanning coastal New England to invest their life savings into their fishing businesses.

Soon after, industry experts changed their tune, reporting that drastic changes were underway. With livelihoods and families on the line, cod stocks began collapsing, leaving thousands devastated both financially and mentally. Today, an astounding 87 percent of Massachusetts ground fishermen suffer from mild to severe PTSD after experiencing the financial consequences of the crash, according to a Northeastern University study.

The situation only worsens as fishermen resort to unsafe practices — going farther out to sea in subpar boats, downsizing crews, and working longer hours on insufficient sleep. It is no surprise that New England ground fisherman are 200 times more likely to die on the job than the average worker, and that fishermen have the highest suicide rates among U.S. workers.

With ocean temperatures in the Northeast increasing more rapidly than global averages, sea animal populations are already noticeably shifting. Populations of cod, lobster, sea bass, and many others are decreasing in size or migrating farther north. And in turn, food chains are altered and fishermen struggle to pay the bills.

From cod to fishermen to families, climate change has the power and potential to cause true devastation, and the time to act is now. In Massachusetts, we have the opportunity to confront this issue head-on and cut greenhouse gas emissions through carbon pricing legislation H.1726 and S.1821.

Read the full option piece at the New Bedford Standard-Times

Warming Oceans Are Turning Sea Stars to Goo and Killing Lobsters, Scientists Say

February 17, 2016 — Warming waters in the Atlantic and Pacific oceans have increased the prevalence of diseases that are turning sea stars to mush and killing lobsters by burrowing under their shells and causing lesions, two new studies say. The outbreaks are so lethal, according to a biologist involved in both studies, that at least one species of sea star has vanished off the coasts of Washington and British Columbia and the lobster fishery, already decimated in southern New England, will likely be threatened in Maine.

In the Pacific, a wasting disease is blamed for the disappearance of the technicolor sunflower sea star. It’s also laying waste to the ochre sea star that scientists at Cornell University, the University of Puget Sound and Northeastern University, as well as other institutions, examined for the latest research. Their reports were published this week.

Numerous climate studies have shown that the oceans are warming. In addition, 30 percent of the carbon released into the atmosphere ends up there, leading to acidification that’s further destroying coral, shell life and other organisms.

The sea-star study was led by Morgan E. Eisenlord, an evolutionary biologist at Cornell, and published in the Proceedings of the Royal Society B. Both in a laboratory and at 16 sites on the San Juan Islands off Washington’s coast, researchers determined that ochre sea stars gradually became sicker as water temperatures rose slightly. Conditions simulated in the lab confirmed what the scientists observed in the field.  As temperatures rose, the disease became more prevalent, and adult ochres died within days. The disease, plus death, was more prominent in temperatures between 54 degrees and 66 degrees Fahrenheit. For the adults, the risk of death was 18 percent higher at 66 degrees.

Read the full story at The Washington Post

UMass Dartmouth researchers developing open-source system for assessing fish movement

October 7, 2015 — UMass Dartmouth School for Marine Science & Technology (SMAST) Associate Professor Geoffrey Cowles is leading a collaborative research effort to develop geolocation methodologies to improve understanding of fish movement patterns of Atlantic cod, yellowtail flounder, and monkfish. The project will focus on the Gulf of Maine/Georges Bank and includes researchers from SMAST, Northeastern University, the Gulf of Maine Research Institute, the Massachusetts Division of Marine Fisheries, along with the fishing industry.

Geolocation, which is the process of taking data recovered from a fish archival tag and coming up with the best estimate of positions between release and recapture, can provide insights into catchability and fishery interactions. Using this technique, the research team will be able to guide behavior-dependent aspects of the model parameterization, as well as interpret the geolocated tracks. Researchers will also employ their collective skills in computer programming, oceanographic modeling, statistical analysis, and fisheries biology to assist in furthering the development of technology to geolocate fish.

This study will also use data acquired from previous studies on each of the example species, which all have their own characteristic behaviors and were tagged in different areas of the Gulf of Maine and Georges Bank region. Most studies of fish movements have relied on fishery recaptures of conventional tags, which provide only the locations of release and recapture. Such tagging studies may bias perceptions of movement patterns.

Archival tags, which are attached to fish internally or externally to record temperature and pressure at regular intervals, enable estimations of fish location while at large. This type of information is often not fully utilized due to the technical difficulties of producing such movement histories via geolocation techniques.

Read the full story at the New Bedford Standard- Times