Saving Seafood

Sustainable Management Means We Can Have Our Tuna and Eat It Too

December 3, 2019 — The following was released by NOAA Fisheries:

Bluefin tuna is often used as a poster species for the impacts of overfishing. But we have good news for seafood lovers eyeing bluefin sashimi at their local sushi restaurant: U.S.-caught Atlantic bluefin tuna is a sustainable food choice.

Bluefin tuna are some of the most valuable fish in the Atlantic. In 2017 alone, U.S. commercial fishermen generated an estimated $9.6 million in revenue from harvesting bluefin. That year, fishermen earned an estimated $6.45 for every pound of bluefin they harvested–more than any other Atlantic tuna.

That value may sound low to those who’ve read about bluefin selling for millions or watched popular fishing shows touting higher prices for this species. As with any product, the value of bluefin will fluctuate with demand, quantity, and quality. Commercial marketing and traditions like celebrating the first bluefin purchased each year can also drive up prices in limited situations. But the million-dollar price tags occasionally reported are far from the norm. In fact, the median value a bluefin tuna in 2018 was just over $2,000.

Atlantic bluefin tuna are also a coveted recreational species that support millions of dollars in economic value each year. A 2015 study conducted by the Virginia Institute of Marine Sciences analyzed recreational anglers’ willingness to pay for bluefin tuna trips. The results showed that the private boat bluefin tuna fishery had an estimated value of $14 million that year.

Read the full release here

Striped bass decline spurs new look at mycobacteria

November 6, 2019 — When Wolfgang Vogelbein peered at striped bass sores through a microscope 22 years ago, he knew he was looking at something very different than what was grabbing headlines at the time.

Pfiesteria piscicida — the so-called “cell from hell” — was being blamed for fish kills in Maryland and making people sick.

But what Vogelbein saw through his lens wasn’t the result of a harmful algae toxin. It was a nasty bacterial infection, creating ugly sores on the outside of fish and lesions on the inside.

The infections were caused by mycobacteria, a type of bacteria that are widespread in the environment, but not typically associated with problems in wild fish. Suddenly, though, it was turning up in large numbers of the Chesapeake Bay’s most prized finfish.

“I thought I would be spending the rest of my career working on myco,” recalled Vogelbein, a fish pathologist at the Virginia Institute of Marine Science.

Read the full story at the Bay Journal

Student-developed app will help public remove derelict crab traps

October 16, 2019 — The following was released by William & Mary:

Kirk Havens of William & Mary’s Virginia Institute of Marine Science says a question regularly asked by community clean-up groups is whether they can remove derelict crab traps from the Chesapeake Bay. Research shows these “pots” both harm marine life and cut into watermen profits.

To date, the answer has been no — in Virginia, it requires special permission to recover derelict traps, even if they are clearly abandoned or illegally present during the fishery off-season. Scientists estimate that baywide, tens of thousands of traps are lost or abandoned each year.

Now, funding from the National Fish and Wildlife Foundation, Covanta, and NOAA’s Marine Debris Program will allow Havens and colleagues to address the derelict-trap issue by working with local high school students to develop a “Crab Trap App” for the cell phones of trained and authorized users. The project will also re-animate an earlier program that paid watermen to find and remove derelict traps from crabbing “hot spots.”

“Having students, trained citizens, and conscientious watermen working together to address lost, abandoned, or discarded crab pots is a great way to help lessen the impact of these pots on the Chesapeake Bay,” says Havens, assistant director of VIMS’ Center for Coastal Resources Management. Joining him in planning and implementing the project are VIMS Asst. Professor Andrew Scheld; Research Associate Professor Donna Bilkovic, Kory Angstadt, Karen Duhring, Dave Stanhope, and Dave Weiss of CCRM; and Cara Simpson, a master’s student at W&M’s Raymond A. Mason School of Business.

Read the full release here

East Coast project to boost oyster breeding

October 16, 2019 — A dozen East Coast universities and federal science groups have been awarded a five-year, $4.4 million contract by NOAA to advance selective breeding of oysters for aquaculture.

The Eastern Oyster Breeding Consortium is led by longtime colleagues and collaborators Stan Allen of the Virginia Institute of Marine Sciences and Ximing Guo of Rutgers University, who in 1994 made a first breakthrough with breeding tetraploid oysters, a building block for today’s aquaculture industry.

Research at the Rutgers Haskins Shellfish Laboratory and the VIMS Aquaculture Breeding and Technology Center used traditional breeding techniques to develop strains of  Eastern oysters that are now quite resistant to MSX, a parasitic disease that for decades depressed oysters harvests.

In pockets where old oyster beds survived, MSX tended to weaken and kill new shellfish within a couple of years. The development of resistant strains enabled a modest revival that today has grown to a $90 million aquaculture industry, with a growing economic impact from the Carolinas to Maine.

Read the full story at National Fisherman

Sea Grant Research Could Help Commercial Fishers Keep Sharks off Gear

October 4, 2019 — North Carolina Sea Grant is collaborating on a new project to keep sharks away from commercial fishing gear. A team from NC State University, the Virginia Institute of Marine Science, and Indiana University-South Bend are partnering with the private sector to pilot test a device that deters the predators.

“Several sharks are overfished or are experiencing overfishing on the U.S. East Coast,” says Sara Mirabilio, a fisheries extension specialist with North Carolina Sea Grant, a statewide program based at NC State University. “Populations of scalloped hammerhead, dusky, sandbar and blacknose sharks all could benefit from an effective deterrent from commercial fishing gear.” Most often, sharks are caught unintentionally in a fishery that is targeting other fish, she explains. This is referred to as bycatch.

The project is one of three announced today by the National Sea Grant College Program to better understand highly migratory species, such as sharks, along the Atlantic and Gulf coasts.

Mirabilio and colleagues, including Richard Brill at the Virginia Institute of Marine Science and Peter Bushnell at Indiana University-South Bend, are testing a state-of-the-art electronic device that could help conserve species of sharks whose populations fishery managers are trying to rebuild. Unlike other fish, sharks possess an electrosensory system that equips them to detect close-range movements of predators or prey.

Read the full story at Island Free Press

Local News Consortium earns funding to enhance oyster breeding

September 23, 2019 — A consortium of 14 shellfish geneticists from 12 East Coast universities and government agencies has won a 5-year, $4.4 million grant from the Atlantic States Marine Fisheries Commission to develop new tools to accelerate and localize selective breeding in support of oyster aquaculture.

The project team was assembled by Stan Allen, professor and director of the Aquaculture Genetics and Breeding Technology Center at William & Mary’s Virginia Institute of Marine Science; Ximing Guo, distinguished professor and shellfish geneticist at Rutgers Haskin Shellfish Research Laboratory; and Dina Proestou, a scientist with the USDA’s Agricultural Research Service. Guo will serve as the consortium’s principal investigator.

Allen says, “Our respective breeding programs at Rutgers and VIMS are at the core of the new consortium approach. The project is a terrific opportunity to develop further ground-breaking approaches with Ximing’s team and our other East Coast collaborators, and will hopefully deliver all the more results for industry.” Guo and Allen previously partnered to create the world’s first tetraploid oysters at Rutgers in 1994.

Read the full story at the Williamsburg Yorktown Daily

Scientists Are Trying to Keep Sharks From Commercial Lines

August 5, 2019 — Scientists at the Virginia Institute of Marine Science in Wachapreague are doing research this summer that could result in a way for commercial fishermen to keep sharks from interfering with their fishing lines.

VIMS Eastern Shore Lab has the advantage of being right on the water and near the last undeveloped stretch of barrier islands on the East Coast.

“There is only one lab in all of Virginia that has running seawater, which you need to keep sharks,” said VIMS scientist Richard Brill.

That lab is in Wachapreague.

Read the full story at U.S. News

Chesapeake Bay health dips, but still rates a C in annual report card

May 22, 2019 — Bay health took a hit from record rainfall last year, but experts claim the Chesapeake’s growing resilience managed to keep a bad situation from getting worse.

The 2018 Chesapeake Bay Report Card was released by the University of Maryland Center for Environmental Science, one of several groups that assess the bay’s health each year. It put the bay’s overall score at 46% — a drop from the previous year’s 54%, but still a C on its 20-point grading scale.

Bay resilience is critical because very wet years may no longer be an anomaly. Climate models predict an increase in weather extremes, and local marine experts are seeing some evidence of that.

“We’re encouraged that, in spite of the fact that we had a major insult to the bay with all the runoff and rainfall in 2018, that we took a dip but we didn’t crash,” said Bill Dennison, vice president for science applications at the center.

“Many of the living resources appear to be fairly resilient,” said Mark Luckenbach, associate director for research and advisory services at the Virginia Institute of Marine Science. “But we need to understand that that’s likely to become more frequent — these really high rainfall events.”

VIMS, affiliated with the College of William and Mary, collected much of the data used to compile the report, particularly for bay-wide seagrass, Virginia fish and blue crabs.

Read the full story at The Daily Press

VIMS: Antarctic krill declines as South Atlantic Ocean warms

February 4, 2019 — When biological oceanographer Deborah Steinberg bundles up and steps onto the deck of the Laurence M. Gould research vessel, this is what she sees: ice, ice and more ice.

“I see icebergs, I see sea ice, I see crabeater seals floating by on ice floes, the mountains of the Antarctic Peninsula,” Steinberg said in a shipboard phone interview Friday. “It’s gorgeous.”

But it’s what she can’t see, what lies beneath the icy waters of the South Atlantic Ocean off northwestern Antarctica, that concerns Steinberg and an international team of marine researchers: krill.

Read the full story at the Daily Press

VIRGINIA: Watermen get say on how to tackle ‘ghost pots’ in the Chesapeake Bay

January 29, 2019 — “Ghost pots” remain a menace in the Chesapeake Bay, but how big a menace and what to do about them is anybody’s guess.

That could change now that the 1,056 hard crab fishermen licensed in Virginia are getting a chance to have their say.

Researchers at the Virginia Institute of Marine Science are mailing surveys to watermen asking for their ideas on the countless crab pots that, for any number of reasons, end up haunting the bay, trapping and killing crabs and other hapless creatures that crawl or swim inside.

“This is really to try to find out, what do the watermen want, what do they think,” said Jim DelBene, the VIMS graduate student who developed the Derelict Blue Crab Pot Survey.

In doing so, he researched what other states with blue crab fisheries, from Connecticut through Texas, are doing to reduce ghost pots. He sought out experts at VIMS and at the Virginia Marine Resources Commission and held focus groups for commercial watermen to help choose and frame the survey questions.

Read the full story at the Daily Press