Saving Seafood

Small Genetic Difference Determines Chinook Salmon Migration Timing, New Study Shows

October 30, 2020 — The following was released by NOAA Fisheries:

The annual migration of Chinook salmon up West Coast rivers from the ocean has enriched ecosystems, inspired cultures, and shaped landscapes. Yet the timing of their migration is controlled by one small section of their genome, according to research published this week in Science.

This is the first time scientists have linked a single gene region to such an influential difference in a vertebrate species. For salmon, it determines whether they return upriver from the ocean in spring or fall. This has crucial implications for other species that rely on them for food. First author Neil Thompson of the University of California Santa Cruz and NOAA Fisheries’ Southwest Fisheries Science Center said that this small genetic difference can have a major effect on a complex pattern of migration and reproduction.

Fish migrating upriver in spring may access habitat such as higher elevation tributaries. These habitats become less accessible to Chinook salmon migrating later in the year when stream flows decline. The result is that fall-run Chinook salmon remain lower in the watershed without continuing up into the tributaries.

However, the construction of dams in the West blocked spring-run Chinook salmon from much of their original spawning habitat. This contributed to the listing of several spring-migrating fish under the Endangered Species Act. Fall-run Chinook salmon on the West Coast are generally more abundant.

The scientists identified the gene region influencing migration with whole-genome sequencing. Then, they scientists examined the genetic pattern in more than 500 Chinook salmon caught by the Yurok Tribe in the Klamath River estuary. They analyzed the effects of variation in this genetic region on migration timing and other physiological traits.

Read the full release here

Alaska’s salmon are shrinking, and climate change may be to blame

August 21, 2020 — Alaska’s highly prized salmon – a favorite of seafood lovers the world over – are getting smaller, and climate change is a suspected culprit, a new study reported, documenting a trend that may pose a risk to a valuable fishery, indigenous people and wildlife.

The study, led by University of Alaska at Fairbanks (UAF) scientists, found that four of Alaska’s five wild salmon species have shrunk in average fish size over the past six decades, with stunted growth becoming more pronounced since 2010.

Hardest hit is Alaska’s official state fish, the Chinook salmon, also known as king salmon.

Chinooks on average are 8 percent smaller than they were before 1990, according to the study, published on Wednesday in the journal Nature Communications. Also shrinking are Alaska’s sockeye, coho and chum salmon, the report said. The findings are based on data from 12.5 million samples collected over six decades.

Read the full story at Reuters

The Army Corps failed to enact endangered species protections for Willamette River salmon, judge rules

August 19, 2020 — A federal judge has ruled in favor of claims that federally owned dams on the upper Willamette River have failed to carry out Endangered Species Act protections for chinook salmon and steelhead.

U.S. District Judge Marco A. Hernandez ruled Tuesday that the Army Corps of Engineers and the National Marine Fisheries Service (NMFS) fell short of their legal obligations by delaying action or failing to take necessary steps under a 2008 Willamette River Biological Opinion plan. The plan included dozens of measures to ensure the survival and recovery of upper Willamette River wild spring chinook and winter steelhead.

It was a result of a previous lawsuit filed in 2007 by environmental organization Willamette Riverkeeper and Northwest Environmental Defense Center against the Corps for not producing a Biological Plan for the Willamette Basin and failing to comply with the ESA.

Read the full story at OPB

Cordova is First to Ask State and Commerce Dept. to Declare Twin Disasters: Fishery and Economic

August 10, 2020 — On Wednesday, August 5, the Cordova City Council unanimously passed a resolution encouraging the state and the federal Secretary of Commerce to declare fisheries disasters for two years: the 2018 Copper River Chinook and sockeye salmon runs and the 2020 Copper River and Prince William Sound Chinook, sockeye and chum salmon runs. The resolution also urges state and federal governments to declare a “condition of economic disaster in Cordova as a result.”

The fishing town of Cordova, located in South-central Alaska between the Copper River to the east and Prince William sound to the west, is the home port for nearly 800 vessels, most of which are the first to harvest returning salmon in Alaska every spring. The town of 2,500 is now the first, of what will likely be at least one or two others, to ask for a fisheries and economic disaster declaration in 2020.

Read the full story at Seafood News

Endangered orcas at risk from U.S. Navy, activists warn

August 3, 2020 — In the Pacific Northwest, an endangered community of killer whales has been on the decline for years due to a variety of factors, all related to human activity. Now, advocacy groups are warning of another looming threat which could further weaken the killer whale population: the U.S. Navy.

The Southern Resident killer whales are a small, close knit community of animals — more accurately known as orcas, the largest species of dolphins — which live primarily along the coast of Oregon, Washington and British Columbia. When they were listed as endangered in 2005, there were 88 Southern Resident orcas — but now, due to declines in their favorite food, Chinook salmon, as well as other manmade threats like toxins, shipping traffic and warming waters due to climate change, their numbers have dwindled to 72.

That’s why a recent request from the U.S. Navy seeking authorization for 51 “takes” of killer whales in the region each year for the next seven years alarmed many environmental groups.

Read the full story at CBS News

New research reveals surprising differences between salmon species — helping consumers decide which ones to serve for dinner

July 9, 2020 — It is well known that salmon provides a range of valuable nutrients, including omega-3 fatty acids and protein. But it can be confusing for consumers to know which species offers the highest level of nutrition when they are faced with several different types of salmon at the grocery store.

There are also mixed messages when it comes to farmed salmon, with some people believing it may contain contaminants and is not as nutritious as wild-caught fish.

Consumers can’t look to labels for clarity since nutritional information is not required on seafood packaging in Canada and the United States.

Stefanie Colombo, an assistant professor of Aquaculture at Dalhousie University’s Agriculture Campus, wanted to shed some light on the murky area by exploring the nutritional differences between salmon. Her research, published recently in the Journal of Agriculture and Food Research, produced some surprising findings she hopes may dispel misunderstandings about farmed salmon.

“I get a lot of questions from people I meet about farmed salmon and many people have the idea that it’s not good for you, that it’s full of fat and contaminants,” says Dr. Colombo, who also holds the Canada Research Chair in Aquaculture Nutrition. “I knew these were misconceptions, but I wanted to know how it compared to the other types of salmon that were out there.

Read the full story at Dal News

Alaska Chinook Fishermen Push Back on Wild Fish Conservancy Injunction to Stop Fishery

April 29, 2020 — Alaska environmentalists, commercial fishermen, charter operators and recreational anglers have pushed back on an injunction filed by Washington-based Wild Fish Conservancy that would prevent Chinook salmon trolling in Southeast Alaska.

WFC sued NOAA Fisheries in March for mismanaging Chinook salmon, a prime prey for the critically endangered Southern Resident Killer Whales. While that lawsuit is pending, WFC filed an injunction on April 17 to prevent Chinook salmon trolling in Southeast Alaska effective July 1, 2020.

Read the full story at Seafood News

ALASKA: Copper River salmon fishery nears without travel restrictions from Cordova City Council

April 15, 2020 — While coastal communities across Alaska grapple with the questions of if and how they should allow commercial fishing and processing operations in their communities this summer, the time table for deciding how to move forward is running short in Cordova.

As of Monday, commercial salmon fishing operations in Cordova are moving forward with few protections in place for residents beyond statewide health mandates.

“We live in a bubble, and I very much think our bubble is about to burst,” lifelong Cordova resident Sylvia Lange said. “While we are pretty much first, we are not alone, and I feel for every single community that has to go through this.”

The Copper River’s sockeye and Chinook salmon are the state’s first commercial salmon fishery, and the demand from chefs in Seattle, Anchorage and other urban restaurants for the season’s first salmon has traditionally driven strong prices.

Although it is not business as usual for fishermen preparing for the mid-May opening, some people in the community fear that not nearly enough has changed to protect the town from a coronavirus outbreak.

Cordova is home to just over 2,000 people, and the population swells in the summer during fishing season.

Read the full story at KTUU

Feds Looking at Protections for Spring-Run Chinook Salmon in Oregon

April 13, 2020 — A petition seeking to extend federal wildlife protections to spring-run Chinook salmon found along Oregon’s coast has merit and could warrant listing the fish under the Endangered Species Act, the Trump administration said Friday.

The spring-run salmon are the main food source for the Southern Resident killer whales, an endangered population of orca living in the Pacific Northwest.

Chinook salmon populations are also found in Washington state, Idaho and California.

The National Marine Fisheries Service (NMFS) decision came after a 90-day review process and means the Chinook salmon could be listed as threatened or endangered pending an additional one-year in-depth analysis.

After the year-long study, the agency could determine that the salmon — scientific name Oncorhynchus tshawytscha — could be listed as a threatened or endangered Evolutionarily Significant Unit, or ESU, under federal law.

The process will allow scientists, commercial fishing representatives, wildlife advocates and others to submit additional information on impacts stemming from protecting the salmon population and its habitat under the Endangered Species Act.

Read the full story at the Courthouse News Service

Low Salmon Forecasts Cast a Pall Over Upcoming Salmon Seasons

March 12, 2020 — Forecasts for many Chinook and coho stocks on the West Coast are low — lower than last year and some nearing historic lows. Regardless, the Pacific Fishery Management Council and its advisory bodies developed alternatives for sport and commercial ocean salmon fisheries when it met last week in Rohnert Park, Calif.

The alternatives now go out for public review before the Council makes a final decision on salmon seasons at its meeting in Vancouver, Wash., on April 5-10.

Read the full story at Seafood News