Saving Seafood

Farming Seaweed And Shellfish Can Help Water Quality And Wild Fish Stocks, Report Finds

October 23, 2019 — Aquaculture is currently the third-most lucrative fishery in New England, after lobster and scallops. Oysters, and increasingly, kelp, are two of the most commonly grown foods.

Now, a new study says aquaculture could also be an important way to address issues like nutrient pollution and habitat loss. The study found that New England’s waters are among the top 20 locations in the world with the greatest opportunities for restorative aquaculture.

Aquaculture hasn’t been associated with environmental benefits, historically — in fact, it’s much more commonly known for pollution, when too many fish are crowded into coastal waters.

But it turns out that shellfish and seaweed, farmed properly, can dramatically improve water quality.

“Shellfish and seaweeds are at the bottom of the food web and they’re able to actually take up nutrients from the water column,” said Seth Theuerkauf, aquaculture scientist with The Nature Conservancy and lead author of that global assessment.

Read the full story at WGBH

Oyster growers agree to abandon quest to use controversial insecticide in Southwest Washington tidelands

October 22, 2019 — A Southwest Washington oyster growers association has abandoned a quest to use a controversial insecticide that combats burrowing shrimp, a creature that can make tidelands unfit for shellfish farming.

In a settlement reached last week, the Willapa Grays Harbor Growers Association agreed to accept a 2018 state Ecology Department denial of the proposed use of imidacloprid and drop an appeal to the state Pollution Control Hearings Board.

The growers wanted to use the insecticide to spray up to 500 annually of the more than 12,000 acres of tidelands used for shellfish cultivation in Willapa Bay and Grays Harbor. Without the spray, the growers say they lose productive tidelands to the shrimp, which churn up sediment and can cause oysters, as well as clams, to suffocate in the muck.

The proposed imidacloprid spraying was opposed by National Marine Fisheries Service because of risks to other marine life, and it triggered a public backlash led by some high-profile Seattle chefs.

Read the full story at The Seattle Times

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

URI researchers awarded multiple grants to study aspects of aquaculture industry

October 10, 2019 — Several scientists at the University of Rhode Island have been awarded grants to study oyster genetics, breeding and diseases as part of a region-wide effort to support the growing oyster aquaculture industry in the Northeast and assist efforts to restore wild oyster populations.

“Wild and farmed oysters are facing major threats from water quality and disease,” said Marta Gomez-Chiarri, a URI professor of animal science who has studied oyster diseases in Narragansett Bay for more than 20 years. “Even though local water quality has improved in Rhode Island, oysters across the United States face localized threats from pollution and eutrophication while at the same time dealing with multiple factors of global ocean change, like ocean acidification, as well as changes in salinity and dissolved oxygen. We are only beginning to understand the effects of these multiple stressors.”

Gomez-Chiarri — along with URI Assistant Professor Jonathan Puritz and U.S. Department of Agriculture scientist Dina Proestou — have teamed with shellfish geneticists and breeders from 10 other East Coast universities to form the Eastern Oyster Genome Consortium to develop genetic tools to accelerate selective breeding efforts. The consortium, in a proposal led by Rutgers University, has been awarded a $4.4 million grant from the Atlantic States Marine Fisheries Commission to accelerate the pace of identifying the genes responsible for desirable traits like disease resistance.

Read the full story at The Westerly Sun

Record low Gulf Coast supply could jolt oyster prices

October 10, 2019 — This spring’s record-shattering flooding from the Mississippi River has wreaked historic havoc on oyster production in the Gulf of Mexico, which could reverberate for years to come with scant supply and hard-to-digest prices.

Louisiana, which bore the worst of the damage from too-low salinity and smothering algae blooms and historically accounts for 75 percent of Gulf harvests and 34 percent of U.S. harvests, is all but out of commission for this fall’s oyster harvest season.

Read the full story at Seafood Source

The Baltimore Sun is wrong about Maryland’s oyster rules

September 30, 2019 — Recently, the Editorial Board of The Baltimore Sun weighed in on the issue of oyster management in the Chesapeake Bay, simultaneously insulting the hard-working men and women of the seafood industry and suggesting that the Maryland Department of Natural Resources is unwilling to protect the oyster (“Dwindling supply of Maryland oysters requires stronger response,” Sept. 17). As chairman of the Delmarva Fisheries Association, I take issue with both of these positions and several others blithely laid out for the members of Maryland’s General Assembly to devour with their oyster shooters and clam strips.

It does nothing to represent our side, the side that’s busy trying to make a living ensuring city folks have fresh, local seafood for their fundraising fêtes. For the record, DNR did not “cave” to watermen and seafood processors. They worked with stakeholders from the legislative, scientific, academic, seafood, business and nonprofit community to arrive at a plan to act now to use a multi-pronged strategy to increase the biomass of our iconic bivalve. We proposed several ways to reduce harvest pressure, one of many stressors to the oyster population, as did others. Ultimately, DNR came up with a plan for the coming season that left no one 100% satisfied. It’s called compromise. They are using an adaptive management strategy that will allow them to monitor scientifically what is working and what’s not and then modify their approach until they’ve arrived at a suite of actions that increase the oyster population.

Read the full story at The Baltimore Sun

MARYLAND: DNR secretary defends Oyster management plan and more from readers

September 30, 2019 — While increasing the oyster population and ensuring that “all Marylanders can enjoy the bivalves’ environmental benefits while improving the long-term outlook for the fishery,” is a goal we share, the guest column by Chesapeake Bay Foundation Executive Director Alison Proust tells only half of the story at best, and is deliberately misleading at worst (The Capital, Sept. 22).

CBF cherry-picked a portion of our analysis presented to the Oyster Advisory Commission in April and asserted that removing one day from the workweek would have “little conservation benefit.” Here is what the analysis actually states: “If implemented alone, given current behavior, one day reduction would have little conservation impact.” This is why we are imposing other measures, including a reduction in bushel limits as well as closing harvest areas. These measures together put us on a path toward a sustainable fishery in 8 to 10 years. CBF knows what DNR’s plan is.

The problem is that our plan doesn’t meet their political agenda. CBF pushed for legislation that mandated a stock assessment be conducted and an oyster management plan be developed, but unfortunately for them, the best available science doesn’t support their agenda.

Read the full story at the Capital Gazette

Senate Appropriations Committee Approves Oyster Restoration Funding In Chesapeake Bay

September 17, 2019 — The Senate Appropriations Committee has approved legislation for the Chesapeake Bay’s oyster restoration funding.

“A thriving oyster population is crucial to the health of the Chesapeake Bay, and in turn, to the health of Maryland’s Bay economy,” said Senator Chris Van Hollen, a member of the Senate Appropriations and Budget Committees. “These funds will ultimately support critical efforts to sustain our oyster population and preserve the Bay. I will keep working in Congress to fight for the investments necessary to protect the Bay, its wildlife, and the businesses Marylanders have built around it.”

Officials said the funding will aim toward rebuilding a healthy oyster population in Maryland.

Included within the legislation were provisions to provide $20 million to the Army Corps of Engineers for multistate ecosystem restoration programs for projects involving oysters in the Bay, provide an additional $70 million to the Army Corps Work Plan for project construction.

Read the full story at WJZ

Maryland proposes 30% cut in commercial oyster harvest

September 11, 2019 — Acting to curtail overfishing, Maryland natural resources officials proposed new oyster harvest restrictions Monday night that they said could reduce commercial landings by about 30% in the upcoming season.

The proposed cutbacks, which include shortening the wild harvest season, reducing the maximum daily catch and closing some reefs in the Upper Chesapeake Bay, are aimed at making the declining oyster fishery sustainable in eight to 10 years, according to officials with the Department of Natural Resources.

“We need to start trending in the right direction,’’ DNR Secretary Jeannie Haddaway-Riccio said.

Read the full story at the Bay Journal

ALABAMA: Climate and change: A different world, above and below Mobile Bay

September 4, 2019 — The salinity levels of water dictate what lives in and around it, and what doesn’t.

If there’s a lot of rain or a sudden surge of fresh water into a bay, salinity levels drop. If there’s a drought a surge of seawater from a major storm, salinity levels tend to rise. Climate change is already altering those balances.

And the changes wrought by those disruptions can be profound.

Earlier this year, heavy rains in the Midwest swelled the Mississippi River. To prevent flooding in New Orleans, the U.S. Army Corps of Engineers opened the Bonnet Carre Spillway, west of the city, twice this year. That sent a torrent of fresh water into the waters off Louisiana and Mississippi, west of Biloxi – and created a disaster along the oyster reefs in the area.

Read the full story at the Montgomery Advertiser