Saving Seafood

OREGON: Fishermen first aid and safety training returns to Newport

October 9, 2019 — Commercial fishing is a dangerous and challenging occupation. Everyone wants to be safe, but the risk of injury is always there. Adding to the challenges of being at sea in hazardous conditions is the difficulty in finding first aid training that fits the needs of commercial fishermen. The U.S. Coast Guard requires that one or more crewmembers be first aid and CPR trained, but most first aid courses are “land-based” and assume you have quick access to an ambulance and hospital — not what you experience at sea, in poor weather and rough seas, working long hours on physically demanding tasks.

With this in mind, a team from Oregon State University and Oregon Sea Grant developed Fishermen First Aid and Safety Training (FFAST), designed around the principles of wilderness first aid to better enable fishermen to prevent and treat injuries they are likely to encounter at sea. The course meets U.S. Coast Guard requirements for on-board first aid training and complements a U.S. Coast Guard required training commonly known as the “Drill Conductor Course,” where fishermen learn how to conduct safety drills on a regular basis to prepare the crew for emergencies. The training takes into account the small crews, common injuries, vessel environments, cold water, rough seas and delayed emergency response times typical to Pacific Northwest fisheries.

Read the full story at the Newport News Times

West Coast Rockfish Boom with the Blob

October 4, 2019 — The following was released by NOAA Fisheries:

The high temperatures that came with the marine heatwave known as the Blob led to unprecedented mixing of local and subtropical species. There were, often with new and unpredictable outcomes. Out of that mix came one unexpected winner: West Coast rockfish. These bottom-dwelling species, which that had previously collapsed in the face of overfishing during the 2000s, thrived under the new conditions.

Scientists from Oregon State University and NOAA Fisheries’ Northwest Fisheries Science Center recount the boom in young rockfish in a new research paper in the journal Fisheries. It examines the effects of the Blob as documented by NOAA Fisheries offshore surveys. Scientists have been conducting the surveys for more than 20 years. The Blob years brought some of the most dramatic changes in marine life off the West Coast they’ve ever seen.

Unexpected interactions may have also altered the abundance of some species, from plankton that support the food web to fish that depend on them, the researchers wrote.

In the waning months of the Blob in 2016, juvenile rockfish increased over a large area from California to Alaska. Since juvenile rockfish are very difficult to distinguish from one another, scientists could not tell which species benefited. They could not tell what specifically drove the boom in their numbers and or whether they will support fisheries in future years.

Read the full release here

New Study Shows Arctic Cod Development, Growth, Survival Impacted by Oil Exposure

September 18, 2019 — The following was released by NOAA Fisheries:

Today, a team of U.S. and Norwegian scientists published new laboratory research findings that show how an Arctic fish species can be seriously affected by small amounts of crude oil released into surface waters. For Arctic (Polar) cod in its early stages of development, crude oil can be lethal if exposure is high enough. Some exposed Arctic cod eggs die not long after hatching due to toxicity. At lower exposure levels, others experience developmental issues affecting their survival when they become larvae and juveniles.

“With the warming ocean and sea ice decline in the Arctic, ship traffic is on the rise. As a result, cod and their habitats are at increasing risk to oil spills,” said Ben Laurel, research fisheries biologist, Alaska Fisheries Science Center and lead author of a new paper published this week in iScience.“Since Arctic cod are one of the most abundant circumpolar forage fish, they play a key role in the marine ecosystem. We really need to better understand how an oil spill will affect keystone species and the ecosystem as a whole.”

For this study, NOAA teamed up with Oregon State University, SINTEF Ocean, and Norway’s Institute of Marine Research. The multi-disciplinary team had expertise in toxicology, fish biology, energetic studies, embryology and chemistry. They conducted one of the first laboratory studies of oil impacts on this coldwater fish species.

Read the full release here

Brexit Could Spark The Next Big Fishing War

August 19, 2019 — Britain’s looming exit from the European Union threatens to spark a new fishing war ― one that risks depleting stocks at a moment when warming seas are already stressing aquatic populations.

Newly sworn-in British Prime Minister Boris Johnson has vowed to take his country out of the bloc by the end of October with or without a deal. That raises the possibility of fresh conflicts as European and British trawlers compete for catches in once-shared fisheries and regulatory enforcement falls to the wayside.

A so-called “no-deal Brexit” would pull the United Kingdom out of the EU’s common fisheries policy and could affect “nearly every fishery and species caught commercially in the Northeast Atlantic,” said Michael Harte, a professor and fisheries policy expert at Oregon State University.

Read the full story at The Huffington Post

Is Fish Slime an Untapped Resource?

April 18, 2019 — Researchers seeking potential replacements for current antibiotics losing their effectiveness against multidrug-resistant pathogens have identified a possible option in the protective mucus that coats young fish.

The team, led by principal investigator Sandra Loesgen at Oregon State University, presented their findings at the recent meeting of the American Chemical Society Spring 2019 National meeting and Exposition in Orlando, Florida.

The bacteria is seen as a promising antibiotic to counter known pathogens, even dangerous organisms such as the microbe that causes MRSA infections. MRSA, or methicillin-resistant Staphylococcus aureus, is a bacterium that causes infections in different parts of the body and is resistant to come commonly used antibiotics.

The protective mucus coating young fish is a viscous substance that protects fish from bacteria, fungi and viruses in their environment, trapping the microbes before they can cause infections.

The slime is also rich in polysaccharides and peptides known to have antibacterial activity.

According to Molly Austin, an undergraduate chemistry student in Loesgen’s laboratory, the fish mucus is interesting because the environment the fish live in is complex. “They are in contact with their environment all the time with many pathogenic viruses,” she said.

Read the full story at Fishermen’s News

Oregon lawmakers propose bill providing millions in funding for climate change research

April 15, 2019 — Oregon state lawmakers are proposing a bill which would provide nearly USD 2 million (EUR 1.7 million) to study and respond to the effects of rising ocean temperatures, low oxygen levels, and ocean acidification, according to a report in the Statesman Journal last week.

Thirty percent of man-made carbon dioxide is absorbed by the ocean, which causes the water to become more acidic, the report said. The change in ocean pH levels has made it difficult for animals like crabs, oysters, and shrimp to make their shells, which could be a blow to the state’s shellfish industry.

Senate Bill 260 would provide USD 1.9 million (EUR 1.68 million) from the state’s general fund to respond to the problems caused by climate change.

If the bill passes, the state’s Department of Fish and Wildlife would receive USD 470,000 (EUR 415,799) to map and assess estuaries – most existing research on acidification and hypoxia (low oxygen levels) has been done offshore.

Oregon State University would receive USD 370,000 (EUR 327,347) to conduct projects concerning shellfish breeding and ocean sampling and monitoring.

The Oregon Ocean Science Trust would receive the lion’s share of the funding, USD 1.06 million (EUR 937,727), which would be used for seven different projects, including modeling of aquatic vegetation, acidification and hypoxia monitoring, and a communications plan.

Read the full story at Seafood Source

Climate change is depleting our essential fisheries

February 28, 2019 — A new study published Thursday in the journal Science outlines the impacts warming waters are having on commercially important fish species.

The world’s fishing industry relies on what’s called fisheries, the clusters of regional fish populations that people can catch economically. And on average, the researchers found that the numbers of fish in critical fisheries around the world have decreased by four percent since 1930.

Fisheries located in the Sea of Japan and the North Sea were the worst off. They experienced as much as a 35 percent drop in their numbers. Other fisheries, however, benefitted from warmer waters, and their populations grew, an expansion scientists warn could create unsustainable competition for resources.

“We were surprised at the strength the impact of warming has already had on fish populations,” says the study’s lead author, ecologist Chris Free at the University of California Santa Barbara.

Read the full story at National Geographic

Research on environmental DNA in salmon monitoring could have economic benefits

January 22, 2019 — Each year wild salmon return to the streams in which they were born to spawn and die. Salmon fishery managers must ensure that adequate numbers of fish return each year to spawn and produce offspring for future harvest. It is expensive and labor intensive to count returning salmon, especially in remote streams.

Researchers at the University of Alaska Southeast, Auke Bay Laboratories, Oregon State University, the UK and China have found that  DNA collected in water samples from Auke Creek can be used to infer the number of salmon passing upstream to spawn. Two of the authors on the published paper who contributed to the research are former UAS Biology students now in graduate school, Josh Russell and Donovan Bell. Russell is currently enrolled in the UAF College of Fisheries and Ocean Sciences program, and Bell is in the biology graduate program at the University of Montana.

This form of DNA, termed “environmental DNA” or “eDNA”, can be collected from water samples. Water samples are then filtered and probed using molecular genetic techniques to quantify the amount of DNA belonging to each salmon species, providing insights into the number of salmon upstream.

Read the full story at PHYS.org

OSU scientist studies slimy new way to count salmon

January 3, 2019 — Scientists have published a novel method for counting Pacific salmon – analyzing DNA from the slime the fish leave behind in their spawning streams.

The study, funded by The National Geographic Society, is published in the journal Molecular Ecology Resources.

“When we analyzed the environmental DNA sloughed into water from salmon tissues, including mucus and skin cells, we got very accurate counts,” said Taal Levi, an ecologist at Oregon State University and lead author on the study. “This is a major first step for more informed salmon management decisions because it opens up the possibility to affordably monitor many more streams than the few that are currently monitored.”

Pacific salmon are a keystone resource in the Pacific Northwest, with an economic impact of well over $500 million each year in Alaska alone. Currently, spawning salmon are counted at just a few streams due to the reliance on human counters, or in rare cases, sonar. Five species of Pacific salmon – pink, chum, sockeye, coho, and chinook – are distributed through more than 6,000 streams in southeast Alaska alone. More than 1,000 of those streams host spawning salmon.

Salmon are anadromous: They migrate from home streams to the ocean as juveniles, and return a few years later as adults to spawn. Anadromous fish such as salmon provide a straightforward scenario for testing whether environmental DNA (eDNA) can be used to count fish, because large numbers of salmon release their DNA as they pass a fixed sampling point, either as they swim up a river or stream as inbound adults or swim downstream as outbound juveniles.

In many rivers and streams, including the majority of freshwater systems in Alaska, adult salmon returning to spawn are poorly monitored, as are fry and smolt production resulting from spawning salmon.

For the study, researchers collected water samples in 2015 and 2016 near the Auke Creek research weir, nearly 16 kilometers north of Juneau. Weirs consist of a series of closely spaced bars across an entire stream to prevent the passage of salmon, except through a single, narrow gate over which a human observer tallies and identifies salmon as they file through.

The Auke Creek weir, cooperatively operated by the National Marine Fisheries Service, in collaboration with the University of Alaska and the Alaska Department of Fish and Game, is known as one of the most accurate fish counters in the world, Levi said.

Read the full story at KTVZ

U.S. Coast Guard will help researchers track whales along the West Coast

October 24, 2018 — The Oregon crab industry is putting up money to launch a new research study on where whales swim and feed along the Pacific Coast. The study stems from growing concern West Coast-wide about whales getting tangled in fishing gear.

Many of the confirmed entanglements in the last few years involved whales snagging crab pot lines.

The Oregon Dungeness Crab Commission voted unanimously Tuesday to underwrite the first year of a three-year aerial survey of humpbacks, gray whales and blue whales off the coast. Oregon State University researcher Leigh Torres said the Marine Mammal Institute, which she leads, and the state Department of Fish and Wildlife hope to win a federal grant to cover years two and three.

“One of the best known ways to reduce whale entanglements is to reduce the overlap between where fishing gear is and where whales are,” Torres said. “In the state of Oregon, we have pretty good information about where the fishing gear is, but not that great information about whale distribution in our waters. So that is really the knowledge gap that this project wants to fill.”

Torres said the best way to track whales is typically from the air.

“But hiring a plane to fly regular surveys monthly over a long period can be quite costly,” Torres said in an interview Tuesday. “So we were trying to brainstorm about ways to do that more cost effectively. And we had the idea to reach out to the U.S. Coast Guard.”

Torres said she was uncertain if the Coast Guard would let whale spotters ride along on routine helicopter patrols twice per month. She was delighted when her request was greeted positively.

Read the full story at Spokane Public Radio