Saving Seafood

A fish mystery solved using genetic testing

October 17, 2019 — The population of cod in the Northern Bering Sea has increased immensely since 2010, and scientists are using fish DNA to find out why.

Think of it like a genetic ancestry test, but for fish.

Until recently, pacific cod were rarely found in the Northern Bering Sea. A 2010 survey showed cod made up only three percent of the entire fish population. That’s been changing, fast.

A survey in the summer of 2017 showed that number shot up 900 percent.

Ingrid Spies is a research fisheries biologist who led the way on this research to determine whether the population spike is evidence of a growing population or of an existing population migrating from elsewhere?

One thought was that cod could have migrated from Russia or the Gulf of Alaska, where they observed cod numbers decline significantly in 2017. Scientists were able to come to a conclusive answer to the question using genetic testing.

Read the full story at KTUU

ALASKA: There’s a new fight over Bering Sea black cod. Warming water may be to blame.

October 10, 2019 — Fish politics in Alaska usually get serious when there aren’t enough fish to go around. But a new fight is brewing over black cod because there are so many of them – possibly as a result of the ocean’s warming waters.

Record numbers of young black cod, also known as sablefish, are swimming off Alaska’s coast; scientists estimate that this group of fish, which had huge reproductive success in 2014, is twice the size of the next-largest on record, from 1977.

The small-boat fishermen who catch black cod, many of whom live in Southeast Alaska, are eagerly waiting for the young fish to grow larger and commercially valuable. But they’re getting frustrated seeing increasing numbers of black cod caught accidentally, as bycatch, by the Seattle-based trawlers that target lower-value species in the Bering Sea, like the pollock that go into McDonald’s Filet-O-Fish sandwiches.

“This recruitment event is what we’re counting on to keep the fishery going for the next 10 or 15 years,” said Tad Fujioka, a Sitka fisherman who decided to buy black cod fishing rights a few years ago, in part because of the boom in their numbers. “We need to save these fish for years to come.”

Read the full story at Alaska Public Media

Genetic Evidence Points to Rapid, Large-Scale Northward Shift of Pacific Cod During Recent Climate Changes

October 10, 2019 — The following was released by NOAA Fisheries:

New genetic research suggests that unprecedented summer abundances of Pacific cod in the northern Bering Sea were due to escalating movement from their core habitat under recent warm conditions.

Until recently, Pacific cod were rarely encountered in the northern Bering Sea. Fishery surveys in the 1970s reported “trace amounts” of cod there. A 2010 Alaska Fisheries Science Center survey estimated that the entire northern population amounted to about 3% of the large southeastern Bering Sea stock that supported a valuable commercial fishery.

Then in 2017, the summer survey recorded dramatically higher abundances in the north: a 900-fold increase since 2010. In the same year, southeastern Bering Sea abundances were down 37% from 2016. Strikingly, the increase in the north nearly matched the decrease in the southeastern Bering Sea.

A 2018 survey revealed an even more remarkable shift: there were more cod in the northern than southeastern Bering Sea.

Read the full release here

ALASKA: Fisheries managers announce crab quotas, season closures

October 8, 2019 — With the fishing season starting next week, the Alaska Department of Fish and Game has released crab quotas for Bristol Bay and the Bering Sea.

The total allowable catch for red king crab is 3.8 million pounds. That’s about 12 percent less than last season, which was already the lowest since 1996.

Meanwhile, the tanner crab season has been closed entirely due to below-threshold estimates of mature males.

Managers have also canceled the St. Matthew Island blue king crab fishery, which has been declared “overfished,” and continued the longtime closures for Pribilof Island red and blue king crab, which have fallen below federal minimums for two decades.

Read the full story at Alaska Public Media

North Pacific Fishery Management Council meets next week in Homer

September 25, 2019 — Federal stewards of Alaska’s fisheries will meet in Homer for the first time since 1983 as they continue their pursuit of involving more people in policy making.

From Sept. 30 to Oct. 10, the Spit will be aswarm with entourages of the 15-member North Pacific Fishery Management Council, which oversees more than 25 stocks in waters from 3 to 200 miles offshore, the source of most of Alaska’s fish volumes.

The NPFMC is one of eight regional councils established by the Magnuson-(Ted) Stevens Fishery Conservation and Management Act in 1976 that booted foreign fleets to waters beyond 200 miles and “Americanized” the Bering Sea fisheries.

“The council certainly is interested in engaging more stakeholders, particularly from rural and Alaska Native communities, and by going to more coastal communities, it allows them more opportunity for input into the process,” said Dave Witherell, council executive director, who added that in recent years the council has expanded beyond Kodiak, Juneau and Sitka to convene in Nome and Dutch Harbor.

Read the full story at the Anchorage Daily News

ALASKA: Biomass of snow crab in Bering Sea grew slower than expected

September 24, 2019 — Last week’s Crab Plan Team, an advisory group to the North Pacific Fisheries Management Council, heard some good news about increased biomass of mature male snow crab in the US state of Alaska’s Bering Sea, but the survey showed less than what was predicted earlier this year.

The quota for the Bering Sea and Aleutian Islands crab fisheries will be set by Alaska Department of Fish and Game (ADF&G) in mid-October. Alaska’s crab resources are jointly managed by the National Oceanic Atmospheric Administration’s National Marine Fisheries Service (NMFS) and the ADF&G.

There was a “smaller increase in mature male biomass (MMB) of snow crab than projected, but it is still increasing”, noted stock assessment author Cody Szuwalski of NMFS. He and other scientists recommended one of eight assessment models that would result in a preferred MMB of 111.4 metric tons, with an OFL of 54,900t, 85% higher than last year, to the plan team.

Read the full story at Undercurrent News

Study Looks at Vulnerability of Eastern Bering Sea Fish, Crab, and Salmon Stocks to Climate Change

September 19, 2019 — The following was released by NOAA Fisheries:

NOAA scientists and partners have released a Climate Vulnerability Assessment for groundfish, crabs, and salmon in the Eastern Bering Sea. They looked at the potential impacts of changing climate, ocean temperatures, and other environmental conditions on 36 groundfish, crab and salmon stocks. Of these, four rockfish stocks, flathead sole and Tanner crab were determined to be the most vulnerable. Several other fish stocks were seen as potentially more resilient. This is because they may be able to move to areas with more favorable environmental conditions, such as more food and optimum water temperatures for growth and survival.

“Alaska fisheries are really important—they contributed 58% of U.S. landings and 29% of U.S. ex-vessel value in 2016, with the majority of Alaska landings and value obtained from the Eastern Bering Sea shelf,” said Robert Foy, director, Alaska Fisheries Science Center. “In the past few years water temperatures have been much warmer than average making the need for studies like this all the more imperative. Our science both in the field and in the lab is critical to monitor ecosystem changes and provide short-term and long-term forecasts to help commercial, recreational and subsistence communities anticipate and respond to changes that impact their way of life.”

Thirty-four scientists assisted with this stock analysis. They considered the likelihood of exposure to climate change, and the sensitivity and adaptability if exposed.

Researchers used existing information on climate and ocean conditions, species distributions, and species growth and development. They estimated each stock’s overall vulnerability to climate-related changes in the region.

Read the full release here

Bristol Bay Native Corporation acquiring Blue North and Clipper

September 17, 2019 — Bristol Bay Native Corporation (BBNC) is planning to acquire Blue North Fisheries and Clipper Seafoods, making it a major player in the Bering Sea longline cod fishery. The acquisition also gets BBNC, former owner of Peter Pan Seafoods, back into the industry.

The acquisition will close on 30 September, and Blue North and Clipper Seafoods will be organized under Bristol Bay Alaska Seafoods, a newly-formed subsidiary of BBNC.

Read the full story at Seafood Source

As Bering Sea ice melts, Alaskans, scientists and Seattle’s fishing fleet witness changes ‘on a massive scale’

September 16, 2019 — Derek Akeya hopes for calm waters and a lucrative catch when fishing from a skiff in the Bering Sea that surrounds his island village.

But on this windy late summer day, waves toss about the boat as Akeya stands in the bow, straining to pull up a line of herring-baited hooks from the rocky bottom.

Instead of bringing aboard halibut – worth more than $5 a pound back on shore – this string of gear yields four large but far less valuable Pacific cod, voracious bottom feeders whose numbers in recent years have exploded in these northern reaches.

“There’s a lot more of them now, and it’s more than a little bit irritating,” Akeya says.

The cod have surged here from the south amid climatic changes unfolding with stunning speed.

For two years, the Bering Sea has been largely without winter ice, a development scientists modeling the warming impacts of greenhouse-gas pollution from fossil fuels once forecast would not occur until 2050.

Read the full story at The Seattle Times

US biologists eye unusual deaths of Alaska ice seals

September 13, 2019 — Seals that rely on sea ice off Alaska’s northwest coast have been dying at uncommon rates, and federal marine mammal biologists Thursday declared an “unusual mortality event.”

The cause of death for nearly 300 ringed, bearded and spotted seals since June 1, 2018, is not known, according to the fisheries arm of the National Oceanic and Atmospheric Administration, the management agency for the marine mammals.

“We’re looking at a broad spectrum of possible causes and trying to rule out what we can and narrow it down,” NOAA Fisheries spokeswoman Julie Speegle said.

Viruses, bacteria and algal blooms are possible causes. Water temperature in the northern Bering Sea and the Chukchi Sea the last two summers have been higher than normal. The agency is looking at possible ecosystem influences, including diminished sea ice, Speegle said.

Alaska Native coastal communities hunt all three seals for meat and hides as part of a subsistence life.

Read the full story from the Associated Press at ABC News