Articles tagged with Aquaculture
A 20-year study found that selectively bred rainbow trout need less feed to achieve the same growth, reducing environmental impact. The fish also achieved similar nutritional quality when fed a locally produced, soy-free feed.
Growing onshore algae in seawater-fed aquaculture systems along the Global South's coasts could increase food production by 50% and feed 10 billion people by 2050. Algae provide high protein content, essential amino acids, and minerals found in meat, making them a sustainable solution to climate change.
MIT researchers create a low-power, sound-harvesting camera that captures color photos and transmits data wirelessly. The autonomous device can run for weeks without power, enabling scientists to explore remote oceans and monitor climate change impacts.
Researchers at Aalto University suggest using crop residues and by-products in livestock and aquaculture production to free up human-usable material. This could increase the global food supply by up to 13% without increasing resource use or requiring major dietary changes.
Researchers gauged small-scale fishers' willingness to use vessel tracking systems, finding that safety functionality and ownership of data were key factors. In a survey of 211 fishers, 67% were willing to pay for the technology, while those citing corruption as their main problem were more likely to participate if paid.
A recent study reveals that the production of fish feed is the greatest contributor to greenhouse gas emissions in China's aquaculture industry. The research found that provinces such as Guangdong, Hubei, Jiangsu, and Shandong have the highest GHG emissions, accounting for approximately 46% of all emissions.
Researchers at Texas A&M AgriLife are working on developing effective nutritional strategies to improve the health, growth, and productivity of hybrid striped bass in aquaculture, using protein substitutes like glycine and glutamate to replace fishmeal.
Shellfish farmers in California are adapting to ocean acidification by diversifying their operations and relying on scientific resources to pinpoint environmental factors contributing to large die-off events. Growers also emphasize the need for policy changes, such as adjusting regulatory requirements and permitting processes.
Mariculture holds great potential to help satisfy global demand for meat, but requires careful governance and efficient operations. The study suggests that finfish and shellfish farms can increase seafood availability, while maintaining ecosystem health.
Researchers have successfully developed a fishmeal and fish oil-free feed for largemouth bass that delivers excellent growth, survival, feed conversion, and fillet quality. The alternative diet uses locally sourced ingredients like soybean meal and algae oil, reducing costs by up to 90%.
A recent study found that yellow perch can expel microplastics from their bodies, but the process reduces nutritional value and alters liver function. The fish also experienced changes in gut microbiota communities and reduced body protein and mineral levels.
Researchers found that genetic relatedness correlates with hormonal responses and behavioural reactions in fish, allowing for selective breeding of less-stressed fish. This approach could simplify breeding methods for aquaculture and aquariums.
The project aims to grow Golden Shiners from eggs to market size within one year using four different strategies. The goals are to serve the bait industry, aquaculture and aquaponics producers, and anglers in Minnesota, while reducing pressure to import bait fish from other states.
A new study by the University of Exeter reveals two previously unknown Vibrio species in UK waters, which can cause gastroenteritis and skin infections in humans. The increasing range of these bacteria also threatens marine biodiversity and the seafood industry, with potential economic costs estimated at £6 billion annually.
The Marine Biological Laboratory (MBL) has successfully cultured the pygmy zebra octopus, a new model organism for biological research. This species offers unique features, such as small adult body size and predictable breeding schedule, making it an ideal candidate for further exploration and research.
A new study projects that farmed seafood supply will drop by 16% globally by 2090 if no action is taken to mitigate climate change. The industry is vulnerable to the effects of climate change, and some regions could see a decline in mariculture production by up to 90%.
A blind taste test by University of Copenhagen researchers shows Danes prefer conventional and organic farmed smoked salmon over wild-caught. The study reveals that people's expectations about a product affect their overall taste experience.
Invasive fish and crustaceans significantly reduce lake organism abundance, degrading water quality. Researchers provide guidance on managing waterbodies to prevent ecosystem collapse.
Scientists at Kobe University have created plants that can identify polychlorinated biphenyls and endocrine-disrupting chemicals, which contaminate soil and water. The plant-based method offers a convenient and inexpensive way to monitor toxicity levels.
SECORE International's coral breeding technique shows significant success in closing the gap to scale for coral restoration, using floating mesocosms to produce thousands of coral recruits. The approach promotes genetic diversity and can help corals cope with climate change.
Researchers at the University of Maine are developing more effective, safe, and sustainable fish vaccines using nanocellulose to protect Atlantic salmon against lethal pathogens. The goal is to reduce vaccine costs and side effects while increasing effectiveness.
A study recommends expanding conservation aquaculture in ten priority estuaries on the West Coast to restore declining Olympia oyster populations, benefiting both local shellfish growers and Tribal communities. Aquaculture can support wild populations without harvesting or selling native oysters.
Researchers investigated molecular characteristics of DOM pool in Xiangshan Bay, a semi-enclosed coastal bay in China. They found terrestrial signals decreasing with increasing salinity due to seawater dilution effect and anthropogenic inputs contributing to DOM cycling.
Research at University of Jyvaskyla reveals that quality and quantity of enrichments influence well-being of aquaculture fishes. The study found that stone enrichments improve survival rates, while a higher number of stones also has a positive effect.
A new analysis found that only 84 of the 408 farmed species had available scientific studies on their welfare, while the majority lacked information. The researchers warn that aquaculture's expansion poses great risks to individual animal lives due to insufficient knowledge.
Researchers found high levels of antimicrobial resistance in water from the Hua Krabue canal, but low levels in aquaculture ponds. The study highlights the urgent need to improve urban sanitation in Thailand's coastal region. Safely managed sanitation is crucial for combatting antibiotic resistance.
The study argues that trophic levels are insufficient to assess aquaculture sustainability due to changing feed compositions and energy requirements. Researchers advocate for more nuanced assessments, such as voluntary certifications and incentives for environmentally responsible practices.
Researchers at UMD are using genomic selection to identify genes that improve feed conversion in rainbow trout, leading to more efficient production and reduced waste. This work aims to address industry problems like downgrading, which affects up to 15% of filet products.
A team of scientists at the University of California, Santa Cruz, has developed a cost-effective new aquaculture feed that eliminates conventional fish meal and fish oil ingredients. The new feed provides better fish weight gain, higher nutritional value, and improved human health outcomes.
KAUST scientists propose a roadmap for molecular ecologists, policymakers, and stakeholders to collaborate on DNA-based approaches for marine monitoring. DNA barcoding and metabarcoding can save time and money by identifying species from small DNA fragments.
A new invasive species, Polydora websteri, has been found in the Wadden Sea, posing a significant threat to oyster farming and the ecosystem. The worm, likely originating from Asia, causes damage to oysters' shells, weakening them and making them vulnerable to predators.
A Stirling-led project aims to reduce the prevalence of schistosomiasis, a debilitating infection affecting 200 million people worldwide. By boosting native snail predators through aquaculture, researchers hope to control snail populations and limit the spread of the disease.
Novel feeds made from microalgae, insect protein and oils could partially substitute fishmeal and oil in aquaculture feeds without negative impacts on efficiency or omega-3 profiles. This study predicts future aquaculture production growth between 37-98% depending on consumer preferences.
A Rutgers-led study found that oyster aquaculture along the Delaware Bay does not significantly impact four shorebird species, including the federally threatened red knot. The research team discovered a small reduction in shorebird presence, but no detectable impact on foraging behavior.
Researchers found that global warming promotes the development of pathogenic bacteria in aquaculture, leading to increased disease rates and antibiotic use. The study highlights the urgent need for alternative treatments and encourages research using One Health or EcoHealth approaches to address antimicrobial resistance.
Researchers found that robotic turtles with small size and slow movements disturb fish minimally, promoting better fish welfare and efficiency. This technology can provide online updates and monitoring without human intervention, leading to quicker responses and lower mortality rates.
A new clinical test uses sustainable harvesting of horseshoe crab amebocytes to save human lives and spare at-risk population. The method enables fast, affordable, and precise tests on specially treated human blood.
Researchers at Ben-Gurion University of the Negev found that treated wastewater contains minimal accumulation of organic micropollutants, posing no toxic effects on fish. The study suggests that tertiary wastewater treatment can be used for growing fish without compromising public health.
A recent study found that the monkeyface prickleback, a unique fish species, has an efficient digestive system capable of breaking down plant material. This discovery holds promise for developing new, sustainable sources of protein for human consumption and could be an important alternative to traditional livestock farming.
The University of Stirling has launched a pioneering tool to minimize environmental and occupational health risks in shrimp farming. The Pedigree project aims to bring research into practical use, providing a 'traffic-light system' to differentiate riskier from higher-quality probiotic products.
A $1.2M grant will establish a network of recirculating aquaculture systems to produce Atlantic salmon in the US, increasing sustainability and reducing imports. The project aims to develop environmentally friendly land-based systems that can replace imported seafood, promoting domestic production and reducing trade deficits.
Researchers at Ben-Gurion University of the Negev have created a monosex prawn that produces only female offspring, reducing the risk of water-borne diseases. This breakthrough could alleviate poverty and protect the environment by increasing aquaculture yields and serving as a natural biocontrol agent.
A study found that seaweed aquaculture has huge potential for carbon sequestration, with suitable area sufficient to render the entire global aquaculture industry carbon neutral. However, farming seaweed alone won't balance emissions from global food production due to cost and growth constraints.
Scientists are working to map and understand underwater soils, which affect commercial, recreational, and transportation activities. Data collected provides insights into soil properties and their importance in habitats and ecosystems.
Researchers found that zebrafish with specific personalities outperformed those based on coloration patterns in terms of reproductive parameters. The study suggests that pairing animals by personality can boost fitness and inform conservation efforts.
A new study shows that farming fish can help meet the world's future protein demands while reducing land use, with potential savings of up to 747 million hectares globally. The research highlights the efficiency of aquatic animals in converting feed to biomass for human consumption.
A recent study found that farming fish can help feed the future global population while substantially reducing land use impacts of meat production. Replacing terrestrial livestock production with aquaculture could spare up to 747 million land hectares globally, an area twice the size of India.
Researchers evaluated aquaculture feed and land use requirements in a simulation-based study, finding that future aquaculture production needs to be four times higher than current levels. An aquaculture-dominant diet reduces feed-crop requirements and land use compared to meat-based agriculture.
A meta-analysis of 100 studies across 44 species reveals captive-born animals have significantly lower reproductive success rates compared to their wild-born counterparts. This finding highlights the need for improvement in animal breeding programs to boost sustainability and maintain food supply.
Researchers have developed nanostructured surface coatings with anti-fouling properties without using toxic components, reducing costs for the aquaculture and shipping industries. The new materials utilize 'nanowrinkles' inspired by carnivorous plants to create slippery surfaces that prevent marine biofouling.
The USDA has awarded grants to support the development of environmentally and economically sustainable aquaculture in the US. Researchers will focus on creating disease-resistant vaccines for key species such as catfish and trout, as well as implementing more efficient and sustainable farming practices. The goal is to foster a globally...
University of Miami Professor Daniel Benetti has been awarded a $967,000 grant from NOAA to develop hatchery technology for three economically important marine fish species. The project aims to create an affordable supply of seed for commercial producers, relieving pressure on wild stocks without negative economic impacts.
The USDA has allocated $1.2 million to support aquaculture research in genetics, disease, production systems, and economics. The funding aims to develop an environmentally and economically sustainable U.S. aquaculture industry.
The study found that Chilean aquacultures release large quantities of readily biodegradable compounds into rivers, altering the ecosystem and depleting oxygen levels. The waste water also contains disinfectants and antibiotics, further harming aquatic life.
A study by Mohamed Mahmoud reveals that fish farm aromas are caused by a complex mixture of substances, including geosmin and manure smell. The researchers identified ten other substances with musty-earthy smells, which run off from land into the water and affect the fish.
Researchers found that Senegalese sole cope with stress by their personality and can identify fish at a young age to improve reproduction in captivity. The study used operational behavioural screening tests to measure stress response and identified proactive and curious fish as more likely to reproduce.
Research by University of Exeter scientists reveals that climate change disrupts fish sensory systems, including smell, hearing, and vision. Fish may swim towards predator smells or ignore sounds that deter them from risky habitats.
A consortium of researchers from the University of Southampton and other institutions is leading a project to calculate the role of physical pond conditions in controlling two devastating pathogens affecting Asian aquaculture. The team aims to develop new guidelines for disease management and novel intervention methods.
Brown University students have developed an innovative sustainable aquaculture idea called Kulisha, which produces fish feed made from black soldier fly larvae. The team plans to build a business to raise and process the larvae, reducing the industry's ecological impact.
In 2015, Virginia shellfish farmers sold $48.3 million in clams and oysters, with hard clam sales leading the nation. The state's industry is expected to increase by 14% for planted oysters in 2016.