All articles tagged with #salmon
Sensor Fish robots tracked what salmon experience in dam turbines and, when echoed in lab tests, showed that rapid decompression and gas emboli from swim-bladder expansion—driven by Boyle’s law—kill juvenile salmon far more often than blade strikes; this led to pressure-based turbine redesigns and the use of neutrally buoyant external tags to reduce mortality and improve survival estimates.
The Health article names four fish as top sources of protein and omega-3 fatty acids while noting mercury content varies by species. It highlights salmon, sardines, tuna (with skipjack noted as lower in mercury), and halibut for notable nutrients, and provides per‑serving nutrition (e.g., 3 oz of Atlantic wild salmon: ~155 calories, 21.6 g protein, 1.8 g omega-3) along with tips to choose lower‑mercury options, cook healthily (grill/bake/steam), and balance omega-3 intake with protein goals for heart and overall health.
Experts highlight seven foods that may reduce inflammation and pain—salmon (omega-3s), blueberries (anthocyanins), extra-virgin olive oil (oleocanthal), leafy greens and cruciferous vegetables, beans, fermented foods, and healing spices (turmeric, ginger, cinnamon). Used in a Mediterranean-style pattern and alongside limiting inflammatory triggers like refined sugars and processed oils, these foods can lower inflammatory markers and may show benefits in about 10 days, with stronger results in 6–8 weeks.
Nutrition experts say the best dinner to lower blood pressure is a heart-healthy plate of salmon, spinach and sweet potatoes, delivering omega-3 fats, potassium, magnesium, fiber, and plant nitrates to help blood vessels relax; prepare with minimal salt and flavorful herbs, or opt for other BP-friendly dinners like chili with beans, herb-roasted chicken with brown rice, or a veggie pasta Primavera.
With an 81% chance of a 'super' El Niño, researchers warn California’s crab and salmon fleets could face disruptions similar to 2015–16, as warmer oceans shift species, blunt juvenile salmon growth, and delay crab seasons (including toxic bloom-caused closures); relief funds for affected fishermen have often arrived only years later, threatening livelihoods.
Award-winning photographer Jordan Robins captured a dramatic drone video at Jervis Bay as a 4-meter great white shark parted a dense school of Australian salmon and swam among them for about a minute before moving back to deeper water, marking one of his most incredible wildlife encounters.
Nutrition experts say a large egg’s ~6g of protein can be surpassed by a wide range of foods, with the top options per 3‑ounce serving including canned tuna (20–22g), salmon (20g), firm tofu (20g), shrimp (18–20g), and lentils (18g); other solid options are edamame, Greek yogurt, cottage cheese, dairy milk, quinoa, and pumpkin seeds. The article notes tuna’s mercury caution and highlights the benefits of diverse protein sources to cover all essential amino acids and other nutrients, alongside the 1.2–1.6 g/kg body weight daily protein guideline.
A European dam-removal surge in 2025 saw a record 603 dams and barriers removed across 21 countries, reconnecting more than 3,740 kilometers of rivers and enabling migratory fish like salmon to reclaim spawning grounds, with Finland’s Hiitolanjoki system and France’s Vezins cited; Sweden led removals with 173 barriers, and the EU’s Nature Restoration Regulation targets 25,000 km of rivers by 2030. While the benefits to biodiversity and flood resilience are clear, projects require years of planning, sediment management, and ongoing maintenance; the trend mirrors US successes on the Klamath and Elwha rivers, showing rapid ecosystem recovery once barriers come down.
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.