All articles tagged with #salmon
A 42-year baseline study of 178 cans of salmon from the Gulf of Alaska and Bristol Bay found anisakid worms—parasites that require marine mammals to reproduce—are more common in chum and pink salmon from 1979–2021, while levels in coho and sockeye remained steady, suggesting a relatively healthy marine ecosystem and signaling that policies protecting marine life and water quality may be supporting ocean health.
A study of 105 wild Atlantic salmon in Sweden’s Lake Vattern found fish exposed to cocaine and its metabolite benzoylecgonine swam about 1.9 times farther per week than unexposed fish, with the metabolite exposure adding roughly 7.6 extra miles — highlighting how pharmaceuticals in waterways are altering wildlife behavior and underscoring the need for improved wastewater treatment and monitoring, with related notes on sharks also ingesting drugs in other regions.
A multi-institution study exposed 105 juvenile Atlantic salmon in Sweden to cocaine or its metabolite benzoylecgonine and tracked their movement. Surprisingly, the metabolite had the strongest effect, with exposed fish swimming up to 1.9 times farther and ending up about 20 miles from release, suggesting cocaine pollution can alter wild fish behavior and ecosystem dynamics. The findings highlight that metabolites—often more prevalent in waterways—should be considered in risk assessments, and future work will assess how widespread these effects are and whether they impact survival and reproduction.
A Current Biology study in Sweden’s Lake Vättern found environmentally relevant levels of cocaine and its main metabolite benzoylecgonine in wastewater cause juvenile Atlantic salmon to swim up to 1.9 times farther per week and disperse up to about 12 km, with the metabolite sometimes having a stronger effect than the drug itself, highlighting that low concentrations of drug residues in waterways can alter wildlife behavior and potentially disrupt ecosystems.
A two-month study in Lake Vättern found juvenile Atlantic salmon exposed to cocaine or its main metabolite benzoylecgonine swam longer distances and moved farther north than unexposed controls, with the metabolite causing the larger change. The results suggest drug pollution in rivers and lakes could alter salmon behavior and survival, highlighting the need for better wastewater management and greener medicines to reduce environmental risk.
The seafood industry is exploring ways to make fish look and taste more like meat to entice more Americans to eat seafood, using marketing, texture/flavor tweaks, and branding to appeal to meat-eaters while addressing sustainability and dietary trends.
Researchers analyzed 178 cans of salmon dating from 1979–2021, turning decades-old inventory into a 42-year ecological dataset by counting anisakid worms. The study found parasite numbers rose over time in chum and pink salmon (stable in coho and sockeye), suggesting reproduction and a functioning food web, while the data also illustrate how preserved cans can reveal long-term signals of ocean health in the Gulf of Alaska and Bristol Bay. Worms pose no risk to humans after processing.
Researchers at a Windsor-area freshwater hatchery documented two Chinook salmon fry that are ventrally conjoined—sharing a single yolk sac and blood vessels while each having separate heads and tails—raising questions about the limits of twin development in fish. The finding underscores how tiny embryonic disruptions can produce such rare twins and highlights the need for careful hatchery monitoring to inform Great Lakes stocking and future research.
The piece evaluates how different salmon preparations—raw (sushi/sashimi/poké), poached, smoked, baked, grilled, as well as dishes like fish pie, salmon burgers, en croûte, and tinned salmon—affect fat, calories and omega-3 content, noting skin-on can boost nutrients and moisture. It discusses safety considerations (parasite risks with raw fish and high salt in smoked salmon), pregnancy and NHS guidelines on weekly oily-fish portions, and highlights how pairing salmon with fiber-rich carbs and veggies can boost nutrient absorption and overall health.
Scientists documented a rare cooperative hunting behavior between Pacific white-sided dolphins and Northern Resident orcas off British Columbia, where dolphins act as scouts to help orcas locate salmon, benefiting both species and challenging previous assumptions about their interactions.
Eating fatty fishes like salmon, sardines, and mackerel, which are rich in omega-3 fatty acids, can significantly boost heart health, reduce inflammation, and lower the risk of cardiovascular events, with dietary sources being more effective than supplements. Experts recommend consuming two to three servings weekly for optimal benefits.
Scientists analyzed decades-old canned salmon containing parasites to study marine ecosystem health, finding that parasite levels in certain salmon species indicate ecosystem stability or recovery, demonstrating how preserved specimens can reveal ecological insights.
Scientists analyzed decades-old canned salmon to study marine parasites, revealing insights into ecosystem health and parasite life cycles, with implications for understanding marine food webs and ecosystem stability.
Scientists discovered the world's oldest salmon fossil in Arctic Alaska, dating back 73 million years, revealing that ancient salmonids thrived during the Cretaceous period and suggesting their origins in northern high-latitude regions.
Shoppers are excited about Costco's weekly treasure hunt, grabbing items like branded hoodies, indoor farmstands, popular video games, holiday treats, gourmet turkeys, caramel apple baskets, and fresh salmon, all at discounted prices.