Over 65 years, Chinook salmon hatcheries in the PNW have skewed towards releasing larger fish that are more easily preyed upon
Tag: FISHERIES/AQUACULTURE
Cats of the sea offer insights into territorial behavior of wild fishes
The entertaining spectacle of wild fishes chasing lasers shone onto the seabed could provide scientists with an innovative way of measuring their territory size and therefore helping to sustainably and spatially manage fisheries and associated habitats in the future, a…
Microplastics found in oysters, clams on Oregon coast, PSU study finds
Tiny threads of plastics are showing up in Pacific oysters and razor clams along the Oregon coast — and the yoga pants, fleece jackets, and sweat-wicking clothing that Pacific Northwesterners love to wear are a source of that pollution, according…
Fishmeal developed for sustainable aquaculture
Aquaculture in Sweden could be more sustainable if by-products from industrial feed production were used instead of wild-caught aquafeed. This is according to studies at the University of Gothenburg. One of the most important challenges in aquaculture is access to…
Fishmeal developed for sustainable aquaculture
Aquaculture in Sweden could be more sustainable if by-products from industrial feed production were used instead of wild-caught aquafeed. This is according to studies at the University of Gothenburg. One of the most important challenges in aquaculture is access to…
Healthy mangroves help coral reef fisheries under climate stress
Healthy mangroves can help fight the consequences of climate change on coral reef fisheries, according to a University of Queensland-led study. UQ’s Professor Peter Mumby said corals have been bleached and reefs have lost their structural complexity as a major…
Cats of the sea offer insights into territorial behavior of wild fishes
The entertaining spectacle of wild fishes chasing lasers shone onto the seabed could provide scientists with an innovative way of measuring their territory size and therefore helping to sustainably and spatially manage fisheries and associated habitats in the future, a…
Microplastics found in oysters, clams on Oregon coast, PSU study finds
Tiny threads of plastics are showing up in Pacific oysters and razor clams along the Oregon coast — and the yoga pants, fleece jackets, and sweat-wicking clothing that Pacific Northwesterners love to wear are a source of that pollution, according…
Prey-size plastics are invading larval fish nurseries
A new research study has revealed that larval fish species from various ocean habitats are now being threatened by plastic pollution that infects their nursery habitats—at levels on average, eight times higher than those recently found in the Great Pacific…
Scientists study impact of sediments and nutrients from Conowingo Dam on Chesapeake Bay
Major storm events have short-term impact, but Chesapeake Bay remains resilient in the long run, scientists say
Prey-size plastics are invading larval fish nurseries
A new research study has revealed that larval fish species from various ocean habitats are now being threatened by plastic pollution that infects their nursery habitats—at levels on average, eight times higher than those recently found in the Great Pacific…
Scientists study impact of sediments and nutrients from Conowingo Dam on Chesapeake Bay
Major storm events have short-term impact, but Chesapeake Bay remains resilient in the long run, scientists say
Chimera formation could favor the expansion of invasive species in the marine environment
Didemnum vexillum: A global invader
Pesticide management is failing Australian and Great Barrier Reef waterways
Scientists say a failure of national management means excessive amounts of harmful chemicals–many now banned in other countries such as the EU, USA and Canada–are damaging the nation’s waterways and the Great Barrier Reef. The new study was led by…
Millions of seabirds rely on discarded fish
Millions of scavenging seabirds survive on fish discarded by North Sea fishing vessels, new research shows. University of Exeter scientists estimate that 267,000 tonnes of fish was discarded in the North Sea in 2010 – enough to feed 3.45 million…
Huge gaps in research on microplastics in North America, PSU study finds
Amid increasing concern about the effects of plastic pollution on marine ecosystems, a new study led by Portland State University found that North America is lagging behind other continents when it comes to understanding the potential risks that microplastics and…
Huge gaps in research on microplastics in North America, PSU study finds
Amid increasing concern about the effects of plastic pollution on marine ecosystems, a new study led by Portland State University found that North America is lagging behind other continents when it comes to understanding the potential risks that microplastics and…
Clemson research indicates abundance of microbe diversity key to healthy coastal ecosystem
CLEMSON, South Carolina — For millions of years, symbiotic bacteria have lived inside the gill cells of Lucinidae clams found in seagrass meadows located mainly along tropical coasts, such as the Florida Keys. These bacteria play a crucial role in…
Study shows invasive blue catfish can tolerate high salinities
Indicates potential for further expansion in Chesapeake and into Delaware Bay
Shark skin microbiome resists infection
A survey of the shark skin microbiome provides the first step toward understanding the remarkable resilience of shark wounds to infection. In the wild, blacktip reef sharks are often seen bearing wounds, but they rarely exhibit obvious signs of infection…
Shark skin microbiome resists infection
A survey of the shark skin microbiome provides the first step toward understanding the remarkable resilience of shark wounds to infection. In the wild, blacktip reef sharks are often seen bearing wounds, but they rarely exhibit obvious signs of infection…
Shark skin microbiome resists infection
A survey of the shark skin microbiome provides the first step toward understanding the remarkable resilience of shark wounds to infection. In the wild, blacktip reef sharks are often seen bearing wounds, but they rarely exhibit obvious signs of infection…
By cutting out one gene, researchers remove a tadpole’s ability to regenerate
Tadpoles of frogs that can typically regrow amputated tails or limbs lost their ability to regenerate after researchers blocked the expression of a newly identified gene that is one of the drivers for this regrowth. Furthermore, scientists hypothesize that the…
Researchers leverage new grant to benefit climate, cows
New England scientists will test algae for dietary supplements to decrease methane emission by cattle
Reclamation awards $8.9 million for innovative solutions in water and power management
The Bureau of Reclamation is providing $8.9 million to 27 new research projects and 114 continuing research projects through its Science and Technology Program. The funding from Reclamation is being matched by $10.9 million in partner contributions. The research findings…
RUDN University veterinarians developed a way to protect carp from the harmful effects of ammonia
Veterinarians from RUDN University have developed a way to increase the resistance of carp, the most common fish in fish farms, to the harmful effects of ammonia, which is found in almost all water bodies. The researchers found that the…
OCEANS 2019 Seattle highlights marine technology science and engineering
More than 300 research papers and posters will be presented at OCEANS 2019 Seattle, October 27 through 31, 2019, at the Washington State Convention Center. Seattle’s unique history of forward-thinking ocean research and technology, leadership in and focus on the…
New tool enables Nova Scotia lobster fishery to address impacts of climate change
U.S. and Canadian researchers have developed a tool that incorporates projected changes in ocean climate onto a geographic fishery management area. Now fishermen, resource managers, and policy-makers can use it to plan for the future sustainability of the lobster fishery…
Seagrass meadows harbor wildlife for centuries, highlighting need for conservation
Seagrass meadows put down deep roots, persisting in the same spot for hundreds and possibly thousands of years, a new study shows. Seagrasses, crucial sources of shelter and food for thousands of species, are threatened globally by coastal development, pollution…
Warming impedes a coral defense, but hungry fish enhance it
Corals create potions that fight bacterial attackers, but warming appears to tip the scales against the potions as they battle a bacterium common in coral bleaching, according to a new study. Reef conservation may offer hope: A particular potion, gathered…
Predators and hidey-holes are good for reef fish populations
New research highlights two factors that play a critical role in supporting reef fish populations and – ultimately – creating conditions that are more favorable for the growth of both coral reefs and seagrass. “Previous work has shown mixed results…
How sustainable is tuna? New global catch database exposes dangerous fishing trends
Appearing in everything from sushi rolls to sandwiches, tuna are among the world’s favourite fish. But are our current tuna fishing habits sustainable? Probably not, according to a new global database of tuna catches created by researchers at the University…
German fishermen’s scepticism towards EU impedes compliance with its regulations
Game of chance experiment: In a relationship with an unpopular regulator, the truth is somewhat elastic
Study champions inland fisheries as rural nutrition hero
Synthesizing new data and assessment methods is showing how freshwater fish is an invisible superhero in the global challenge to feed poor rural populations in many areas of the world. But there’s a problem: Invisibility is the wrong superpower. Researchers…
Fish Micronutrients ‘slipping through the hands’ of malnourished people
Millions of people are suffering from malnutrition despite some of the most nutritious fish species in the world being caught near their homes, according to new research published in Nature
OSU ecologist: Ocean-based actions can close gaps in climate change mitigation
CORVALLIS, Ore. – Ocean-based actions have greater potential to fill in gaps in climate change mitigation than previously appreciated, an Oregon State University scientist and two co-authors explain in a paper published today in Science . The article by OSU…
ISSF releases new non-entangling and biodegradable FADs guide
Updated best-practices illustrated manual offers practical, science-based guidance on building biodegradable FADs
Fungicides as an underestimated hazard for freshwater organisms
Fungicides are worldwide used in agriculture. Large amounts of applied fungicides leak into nearby surface waters. The effects of these substances on aquatic organisms are poorly understood and not specifically addressed in the EU regulatory frameworks with respect to the…
New technology allows fleets to double fishing capacity — and deplete fish stocks faster
Technological advances are allowing commercial fishing fleets to double their fishing power every 35 years and put even more pressure on dwindling fish stocks, new research has found. Researchers from the Sea Around Us initiative at the University of British…
All on the table
Researchers call for a more comprehensive assessment of the global food system
The ‘pathobiome’ — a new understanding of disease
Cefas and University of Exeter scientists have presented a novel concept describing the complex microbial interactions that lead to disease in plants, animals and humans. Microbial organisms and viruses cause many diseases of plants and animals. They can also help…
Four billion particles of microplastics discovered in major body of water
ST. PETERSBURG, Fla. (September 12, 2019)- A new study from the University of South Florida St. Petersburg and Eckerd College estimates the waters of Tampa Bay contain four billion particles of microplastics, raising new questions about the impact of pollution…
New viruses discovered in endangered wild Pacific salmon populations
Three new viruses — including one from a group of viruses never before shown to infect fish — have
Revolutionizing water quality monitoring for our rivers and reef
New, lower-cost help may soon be on the way to help manage one of the biggest threats facing the Great Barrier Reef. That threat is pollution from land making its way downstream by way of the many rivers and streams…
How the herring adapted to the light environment in the Baltic Sea
The evolutionary process that occurs when a species colonizes a new environment provides an opportunity to explore the mechanisms underlying genetic adaptation, which is essential knowledge for understanding evolution and the maintenance of biodiversity. An international team of scientists, led…
Enriched environment in aquaculture enhances the survival of fish from bacterial disease
In enriched rearing method structures are added to rearing tanks to increase habitat complexity and
New mapping reveals lost west coast estuary habitat
Research highlights potential for restoration of important habitats
Flashlight fish use bioluminescence to school at night
Flashlight fish use their bioluminescent organs to school at night – and only a few need actively flash to maintain the group, according to a study published August 14, 2019 in the open-access journal PLOS ONE by David Gruber from…
Fishing leads to investigation of environmental changes in waterways
A fisherman’s curiosity led to identification of the correlation between microbial communities in recreational freshwater locales and seasonal environmental changes, according to a team of researchers from Penn State. Zachary Weagly, a 2018 graduate of Penn State Berks and an…
Rapid evolution: New findings on its molecular mechanisms
The mechanisms by which new species arise are still not fully understood. What are the evolutionary processes that drive the evolution of new species? Evolutionary biologists traditionally assumed that geographical barriers between animal populations play a decisive role (allopatric speciation):…